Physics MCQ's ( Basic + Advance - Must have) Pocket book pdf

Collection of Physics MCQ's ( Basic + Advance - Must have) Pocket book pdf  download now

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What is electricity and How Electricity is Produced ?

What is electricity ?

Electricity is a form of energy that starts with atoms. You can't see atoms because they're too small, but they make up everything around us. There are three parts to an atom: protons, neutrons and electrons. Electricity is created when electrons move from atom to atom. There are a number of ways to make electrons move, but most electricity is produced at power plants.

How do power plants work ?

Power plants that use water to make electricity are built near rivers.Dams are built across rivers to hold back the water. The water is then directed through big pipes and it falls against the blades of giant turbines. The turbines have blades on them that turn when the water hits them, just like the blades of a pinwheel turn when you blow on them. Once the water hits the blades, it returns to the river.

The turbine blades are attached to a big metal rod, and at the end of that rod are large magnets. When the blades turn, they make the rod and the magnets spin very fast. The magnet end is surrounded by heavy coils of copper wire, and the spinning magnets cause electrons in the wire to begin to move, creating electricity.

What happens to the electricity after that ?

It moves through wires into what's called a power transformer. The electrical voltage (the strength at which electricity flows) is fairly high and the transformer makes it even higher to help it flow through wires called transmission lines. Those wires are attached to wooden or metal poles that you see along roads and throughout communities.

All the wires are made of metal – usually aluminum or copper. That's because metal is a good conductor – electricity travels through it easily. By the way, water is also a good conductor, and because our bodies are mostly made of water, electricity can travel through us easily. That's not something we want to happen though, because if we have electricity going through us we'll likely be seriously hurt or even killed. That's why grown-ups warn you to stay away from high voltage sites and not to stick your fingers in a wall plug.

Electricity travels fast – about 310,000 kilometers per second! If you moved that fast, you could probably make several trips around the world in the time it takes to turn on a light!

Sometimes, when electricity has to travel a long way it gets a little weaker as it moves along the lines. It needs a boost (like you need food to replace the energy you've burned after playing outside all day). That's where substations help. Substations are large box-like power transformers that sit in fenced-in areas. You'll see signs on the fences that say high voltage – stay away and it's really important that you obey those signs (remember what you read about electricity being able to travel easily through your body).

How does electricity get into my house ?

When wires reach your house, another transformer on the power pole makes the electricity just the right voltage so you can use it safely.

The wire is connected to a meter box that keeps track of how much electricity is being used. There are wires in your house connected to plugs, also called outlets. These outlets let you plug in your boom box, television set, or any thing else electrical. What an amazing journey electricity takes to get to your home !!

 

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It is really confusing..3 or 4 ??

Look at the Image you will find it..!!

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We know the Earth is rotating, but why?

Why is everything in the Solar System spinning? And why is it mostly all spinning in the same direction?

 

Why is everything in the Solar System spinning? And why is it mostly all spinning in the same direction?

It can’t be a coincidence. Look down on the Earth from above, and you’d see that it’s turning in a counter-clockwise direction. Same with the Sun, Mars and most of the planets.  

4.54 billion years ago, our Solar System formed within a cloud of hydrogen not unlike the Orion Nebula, or the Eagle Nebula, with its awesome pillars of creation. Then, it took some kick, like from the shock wave from a nearby supernova, and this set a region of the cold gas falling inward through its mutual gravity. As it collapsed, the cloud began to spin.

But why?

It’s the conservation of angular momentum.

Think about the individual atoms in the cloud of hydrogen. Each particle has its own momentum as it drifts through the void. As these atoms glom onto one another with gravity, they need to average out their momentum. It might be possible to average out perfectly to zero, but it’s really really unlikely.

Which means, there will be some left over. Like a figure skater pulling in her arms to spin more rapidly, the collapsing proto-Solar System with its averaged out particle momentum began to spin faster and faster.

This is the conservation of angular momentum at work.

As the Solar System spun more rapidly, it flattened out into a disk with a bulge in the middle. We see this same structure throughout the Universe: the shape of galaxies, around rapidly spinning black holes, and we even see it in pizza restaurants.

The Sun formed from the bulge at the center of this disk, and the planets formed further out. They inherited their rotation from the overall movement of the Solar System itself. Over the course of a few hundred million years, all of the material in the Solar System gathered together into planets, asteroids, moons and comets. Then the powerful radiation and solar winds from the young Sun cleared out everything that was left over.

Without any unbalanced forces acting on them, the inertia of the Sun and the planets have kept them spinning for billions of years.

And they’ll continue to do so until they collide with some object, billions or even trillions of years in the future.

So are you still wondering, why does the Earth spin?

The Earth spins because it formed in the accretion disk of a cloud of hydrogen that collapsed down from mutual gravity and needed to conserve its angular momentum. It continues to spin because of inertia.

The reason it’s all the same direction is because they all formed together in the same Solar Nebula, billions of years ago.

 

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What's the difference between fission & fusion ?

What's the difference between fission & fusion ?

 

A nuclear reaction is a process in which atoms collide with other atoms and lose some of their original mass. Because of the principle of energy conservation the lost mass must reappear as generated energy, according to Einstein's equation E = mc². The two types of nuclear reactions used to produce energy are fission and fusion.

In a fission reaction, a heavy atomic nucleus is split into smaller nuclei, other particles and radiation. In a typical reaction, an atom of uranium 235 absorbs a neutron and splits into two lighter atoms, barium and krypton, emitting radiation and neutrons. Under special circumstances (the attainment of a "critical mass") the emitted neutrons can split further atoms, which in turn bring about more splitting, producing a very fast chain reaction. Nuclear power plants exploit the process of fission to create energy.  

In a fusion reaction, two or more light atomic nuclei fuse to form a single heavier nucleus. The mass change in the process is the source of nuclear energy. Fusion within the cores of the sun and other stars generates their radiating energy by fusing two hydrogen atoms to produce a helium atom. Current researchers are using magnetic vacuum chambers and laser beams in an attempt to generate the extreme high-temperatures necessary for the fusion process. If successful, the net energy gain would create a viable alternative energy option.

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How Can We See Black Holes ?

How Can We See Black Holes?  

Can we see a Black holes..? if you have this question in your mind than here is answer for you.

 

Though we cannot "see" a black hole itself (since not even light can escape the hole's gravitational field), we may see the hole's effects on nearby matter. For example, if gas from a nearby star were sucked towards the black hole, the intense gravitation al energy would heat the gas to millions of degrees. The resulting X-ray emissions could point to the presence of the black hole.

Or, if a massive black hole were surrounded by large amounts of orbiting material -- gas, dust, even stars -- their rapid motion close to the hole could be observable via shifts in the energy of the radiation they emit. Evidence along these lines is mount ing, suggesting that black holes may not be that rare in the universe.

However, such evidence remains indirect and therefore inconclusive. To confirm that black holes actually exist, we'll need to be able to observe the gravitational waves they produce as they form or interact.

If scientists could build gravitational wave detectors of sufficient sensitivity, they should be able to measure the vibrations in spacetime generated by black holes as they form from a collapsing star, when they ingest large amoun ts of matter, or if they interact, even collide with a second black hole or another massive object, such as a neutron star. Certain patterns of gravitational waves emitted would reveal the "smoking gun."

So far, the wavelike disturbances in spacetime have eluded detection. In a relativistic universe, there should be no shortage of places in which to hunt for black holes. Much larger and more sensitive detectors are now under construction. With luck, soon gravitation scientists may be shouting "Eureka!"

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What Causes Optical Illusions?

What Causes Optical Illusions?

These yellow and blue blocks appear to move one after the other but actually not..!!

In simple terms, an optical illusion is caused by the structure of both the eye and brain and how they work together. Because of the anatomical make up of the eye and the complexity of the way images of transmitted from the eye to the brain, optical illusions are not as rare as one might consider.

The Anatomy of the Eye

The eye has two types of receptors on it (cones and rods) that pick up different bits of information on image. Around the retina, these cones and rods rest, waiting to pick up a stimuli and transfer it to the optic nerve. The optic nerve, in turn, transmits the information to the brain for processing.

Cone cells detect color and rod cells detect low-light contrasts. They work together to provide the necessary information to form an imag. However, at the edges of the retina, there are more rods and at the center of the retina, there are more cones. Because of this, based on how someone is looking at an image, they might see things differently. This is an optical illusion. For a better image, simply turning one's head and looking straight at something will provide the cones access and give a more detailed image.

Medical Syndromes Causing Optical Illusions

There is research to suggest that some optical illusions are caused by medical syndromes such as schizophrenia. Because of the nature of the disease, an individual sees something different than what is actually being seen. This is caused by the brain interpreting the information differently than it normally would be.

Effort on the Eye

Because it is more difficult to raise the eye than move the eye horizontally, the eye perceives that vertical distances are greater than horizontal distances. This creates depth in flat surfaces which can – especially when the eyes are fatigued – lead them to perceive something incorrectly and then pass that information onto the brain. The brain takes what information it has and processes it whether it is correct or not. Fatigue in the eyes is an exceptional cause of optical illusions because it takes a little longer for the eyes to focus more effectively.

 

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Why is air invisible..?

Air is invisible because it is a gas, and gas particles generally allow light to pass through them because they are so spread apart. Gases expand to fill any container they are in, as they do not hold a shape; therefore, it is usually easy to see through them

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What is geostationary satellite?

What is geostationary satellite?

 

A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction the earth rotates (west to east). At this altitude, one orbit takes 24 hours, the same length of time as the earth requires to rotate once on its axis. The term geostationary comes from the fact that such a satellite appears nearly stationary in the sky as seen by a ground-based observer. BGAN, the new global mobile communications network, uses geostationary satellites.

A single geostationary satellite is on a line of sight with about 40 percent of the earth's surface. Three such satellites, each separated by 120 degrees of longitude, can provide coverage of the entire planet, with the exception of small circular regions centered at the north and south geographic poles. A geostationary satellite can be accessed using a directional antenna, usually a small dish, aimed at the spot in the sky where the satellite appears to hover. The principal advantage of this type of satellite is the fact that an earthbound directional antenna can be aimed and then left in position without further adjustment. Another advantage is the fact that because highly directional antennas can be used, interference from surface-based sources, and from other satellites, is minimized.

Geostationary satellites have two major limitations. First, because the orbital zone is an extremely narrow ring in the plane of the equator, the number of satellites that can be maintained in geostationary orbits without mutual conflict (or even collision) is limited. Second, the distance that an electromagnetic (EM) signal must travel to and from a geostationary satellite is a minimum of 71,600 kilometers or 44,600 miles. Thus, a latency of at least 240 milliseconds is introduced when an EM signal, traveling at 300,000 kilometers per second (186,000 miles per second), makes a round trip from the surface to the satellite and back.

There are two other, less serious, problems with geostationary satellites. First, the exact position of a geostationary satellite, relative to the surface, varies slightly over the course of each 24-hour period because of gravitational interaction among the satellite, the earth, the sun, the moon, and the non-terrestrial planets. As observed from the surface, the satellite wanders within a rectangular region in the sky called the box. The box is small, but it limits the sharpness of the directional pattern, and therefore the power gain, that earth-based antennas can be designed to have. Second, there is a dramatic increase in background EM noise when the satellite comes near the sun as observed from a receiving station on the surface, because the sun is a powerful source of EM energy. This effect, known as solar fade, is a problem only within a few days of the equinoxes in late March and late September. Even then, episodes last for only a few minutes and take place only once a day.

In recent years, low earth orbit (LEO) satellite systems have become popular. This type of system employs a fleet or swarm of satellites, each in a polar orbit at an altitude of a few hundred kilometers. Each revolution takes between 90 minutes and a few hours. Over the course of a day, such a satellite comes within range of every point on the earth's surface for a certain period of time. The satellites in a LEO swarm are strategically spaced so that, from any point on the surface, at least one satellite is always on a line of sight. The satellites thus act as moving repeaters in a global cellular network. A LEO satellite system allows the use of simple, non-directional antennas, offers reduced latency, and does not suffer from solar fade. These facts are touted as advantages of LEO systems over geostationary satellites.

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What Is the Difference Between Mass and Weight?

Comparison of Mass and Weight

Mass is a property of matter. The mass of an object is the same everywhere,	Weight depends on the effect of gravity. Weight varies according to location.
Mass can never be zero.	Weight can be zero if no gravity acts upon an object, as in space.
Mass does not change according to location.	Weight increases or decreases with higher or lower gravity.
Mass is a scalar quantity. It has magnitude.	Weight is a vector quantity. It has magnitude and is directed toward the center of the Earth or other gravity well.
Mass may be measured using an ordinary balance.	Weight is measured using a spring balance.
Mass usually is measured in grams and kilograms.	Weight often is measured in newtons, a unit of force.

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Is the number 0 even or odd..?

Is the number 0 even or odd..? 

 

A number is even if it is divisible by 2 without a remainder. For Example 8 is even since 8 divided by 2 is 4, and 12 is even since 12 divided by 2 is 6, but 7 is not even since 7 divided by 2 is 3 with a remainder of 1. 

What about zero? Zero divided by 2 is zero with no remainder so zero is even. 

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What would happen if Earth stopped spinning ?

What would happen if Earth stopped spinning ..?? 

 

 As you probably know, the Earth is rotating on its axis. This gives us day and night. Of course it’s impossible, but what would happen if the Earth stopped spinning? Remember, this isn’t possible, it can’t happen, so don’t worry.

Everything would be launched in a ballistic trajectory sideways
The first thing to think about is the momentum of everything on the surface of the Earth. You’re held down by gravity and you’re whizzing through space at a rotational velocity of 1,674.4 km/h (at the equator). You can’t feel it because of momentum. Just like how you can’t feel that you’re moving in a car going down the highway. But you feel the effects when you stop, or get into an accident. And so, if the Earth suddenly stopped spinning, everything on the surface of the Earth at the equator would suddenly be moving at more than 1,600 km/hour sideways. The escape velocity of Earth is about 40,000 km/hour, so that isn’t enough to fly off into space; but it would cause some horrible damage as everything flew in a ballistic trajectory sideways. Imagine the oceans sloshing sideways at 1,600 km/hour.

The rotational velocity of the Earth decreases as you head away from the equator, towards the poles. So as you got further away from the equator, your speed would decrease. If you were standing right on the north or south pole, you’d barely even feel it.

A day would last 365 days
The next problem is that day and night wouldn’t work the same any more. Right now the Earth is rotating on its axis, returning the Sun to the same position every 24 hours. But if the Earth stopped spinning, it would then take 365 days for the Sun to move through the sky and return to the same position. Half of the Earth would be baked for half a year, while the other hemisphere was in darkness. It would get very hot on the sunny side, and very cold in the shadowed side. You can imagine how that would be devastating to plants and animals. We get a hint of this at the poles, where you can experience weeks of permanent night and then weeks of permanent day. But imagine 6 months of night, followed by 6 months of day.

What Would Happen if the Earth Stopped Spinning

The Earth would become a perfect sphere
This might seem minor compared to the other catastrophes, but the Earth would become an almost perfect sphere. The Earth is currently rotating on its axis, completing one turn approximately every 24 hours. This rotational velocity causes the Earth to bulge out around its equator, turning our planet into an oblate spheroid (a flattened ball). Without this spin, gravity would be able to pull the Earth into a nice perfect sphere. This sounds interesting and probably harmless, but it’s actually a *big* problem. Because of the Earth’s bulge in the middle, the oceans are held out at the equator by 8 km. On perfect sphere Earth, the world’s oceans would redistribute, flooding many regions of the planet with an immense volume of water. We’d end up with a single continent around the middle of the planet, with oceans surrounding the north and south poles.

The Earth would no longer be tilted
The Earth’s tilt is defined by how the planet is rotating compared to the Sun. This axis of rotation defines the Earth’s seasons. But without any rotation, the concept doesn’t make sense any more. There’s still a north pole of the planet, where the radiation from the Sun is at its lowest angle, and an equator, where the light hits most directly. But there would no longer be seasons.

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Interesting Facts About Earth

Interesting Facts About Earth

 

Earth is the place that each person calls home. It is home to over six billion people and around 8.7 million different species. While everyone lives on Earth, there are many interesting facts that people do not know about the planet. Earth is unique in our solar system as being the only known planet to support the multitudes of different life. Earth facts can reveal the true nature of the place life calls home.

The Earth is not a Perfect Circle

It was long thought that Earth was spherical in shape. After careful studies and measurements by scientists, it is now known that earth is more of an oval. If you look at the diameter from pole to pole, Earth is 7882.4 miles long. If you measure the diameter from the equator line, earth measures 7908.9 miles long. The reason for the difference is how the Earth spins. It spins on its axes, which goes through the poles, making some of its mass move away from the poles and to its outside center.

There are Few Craters on Earth

When Earth is compared to the Moon, it has less impact craters caused by space debris. The Moon is documented to have billions of craters, as can be seen by looking at it. The reason behind so few craters on the Earth is that Earth possesses an atmosphere, which creates fiction for anything coming into it. The friction caused by an object moving at hundreds of thousands of miles per second entering the Earth?s atmosphere causes the object to burn up before hitting the ground. The Moon has no atmosphere and cannot stop even the smallest meteor hitting its surface, which is why there are so many craters on the Moon.

The Earth's Atmosphere

The atmosphere around the Earth keeps the animals and creatures living upon its surface a great deal as far as the requirements of life goes. It weighs around five trillions tons altogether, which is calculated based on the atmospheric pressure it exudes on the surface. The pressure is around one kilogram per square centimeter. The atmosphere protects its inhabitants from harmful space objects like meteors by burning them up before impact as well as harmful light rays such as X-rays, ultraviolet light, infrared and gamma rays.

Gravity is not the Same Everywhere

v There is an area in Canada called Hudson Bay that has a lower gravitational force than other regions of the earth. Scientists believe that 25 to 45 percent of the gravitational flux is due to a giant glacier sheet that was in the area long ago causing the Earth's crust to subside somewhat. The rest of the reason behind the gravitational flux can be explained by down drag due to the magma in the Earth's mantle.

The place that all known living creatures live is a fascinating place. The Earth facts discussed in this article can give an idea of the type of place life call home. The most important thing that people of planet Earth can do is to look after Earth so that all future generations can experience the wonders that Earth holds.

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In the earth where the gravity of the earth becomes zero..?

In the earth where the gravity of the earth becomes zero..?

In a perfectly-shaped sphere, with a smooth surface, and composed of exactly the same substance with the same density throughout it, the force of gravity is zero at the exact center of the sphere. That does NOT mean that 'gravity becomes zero' at the center. It means that at the center, for every speck of mass pulling on you in any direction with any force, there's another speck of mass pulling you in exactly the opposite direction with exactly the same amount of force, so the whole thing adds up to zero. In the real Earth, we can't tell exactly where that point is, because the Earth is not a perfect sphere shape, It doesn't have a smooth surface, and we don't know every last little detail about the distribution of mass inside it.

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Can you have zero gravity conditions on Earth..?

 Can you have zero gravity conditions on Earth..?

Gravity will always be there, but you can set up an arrangement where you will appear to be weightless. Such an arrangement is in a plane that flies up and swoops down so that its path is a circle standing on edge. You will hang in the plane and appear to be weightless. What is actually happening is that for a few seconds the plane is falling at the same speed as you are so if you measured your weight on scales in the plane, you would appear to weigh zero.

Zero gravity is impossible on earth. Actually, zero gravity is impossible anywhere. Gravity acts through millions of light-years, holding galaxy groups together, so there's no way that you can eliminate gravity this close to a major mass like the earth.

However - you CAN have a situation that is mathematically and physically equivalent to zero gravity, and that is free fall. Jump on a trampoline, you'll spend a few fractions of a second in free fall, which is just like zero-G. NASA does it with the Vomit Comet, which is a modified KC-135 aircraft that flies in parabolic paths to give astronauts-in-training a free fall experience. 

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Which Came First, The Chicken Or The Egg?

Chickens, as a species, became chickens through a long, slow process of evolution. At some point, a chicken-like bird produced an offspring that, due to some mutation in its DNA, crossed the threshold from mere chicken likeness into chicken actuality. That is to say, a proto-chicken gave birth to a real-life official chicken. And since that real-life official chicken came out of its own egg, we can say that the egg came first.

Another way to look at the question would be to ask which came first in evolutionary history. Once again, the egg takes precedence. Many characteristics of the modern avian egg—namely an oblong, asymmetrical shape and a hardened shell—were in place before birds diverged from dinosaurs about 150 million years ago. "A lot of the traits that we see in bird eggs evolved prior to birds in theropod dinosaurs," says Darla Zelenitsky, of the University of Calgary.

Another key moment in the history of avian eggs occurred at least 150 million years before that, when a subset of four-limbed vertebrates evolved to produce amniotic eggs. The embryos within the eggs were surrounded by three fluid-filled membranes that provide nourishment, protection, and a way to breathe. The earliest amniotic eggs contained large amounts of yolk, says James R. Stewart, a reproductive physiologist at East Tennessee State University. "You still see that in birds, crocodilians, and snakes," he explains. Like other placental mammals, we humans lost our yolk somewhere along the line, but our eggs still come with a vestigial yolk sac.

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Why 0! is equal to 1 ..??

Why 0! is equal to 1 ..??

We Know ,

n! = n x (n-1)!

Dividing both sides by n , We get

n!/n = n x (n-1)!/n 

Or, n!/n = (n-1)!

Or, (n-1)! = n!/n

Now , Putting n=1 , We get

(1-1)! = 1!/1

i.e. 0! = 1 

  

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What would happen if you drilled a tunnel through the center of the Earth and jumped into it?

What would happen if you drilled a tunnel through the center of the Earth and jumped into it..?

Want to really get away from it all? The farthest you can travel from home (and still remain on Earth) is about 7,900 miles (12,700 kilometers) straight down, but you'll have to journey the long way round to get there: 12,450 miles (20,036 kilometers) over land and sea.

Why not take a shortcut, straight down? You can get there in about 42 minutes -- that's short enough for a long lunch, assuming you can avoid Mole Men, prehistoric reptiles and underworld denizens en route. Granted, most Americans would end up in the Indian Ocean, but Chileans could dine out on authentic Chinese, and Kiwis could tuck into Spanish tapas for tea [sources: NOVA; Shegelski].

Of course, you'd be in for a rough ride. First, you'd have to pass through 22-44 miles (35-70 kilometers) of continental crust (3-6 miles/5-10 kilometers on the ocean floor) followed by 1,800 miles (2,900 kilometers) of mantle. After that, you'd have to traverse a Mars-sized outer core of liquid iron churning as hot as the sun's surface (10,000 degrees F, or 5,500 degrees C), then a solid, moon-sized inner core, and, some studies suggest, a liquid innermost core [sources: Angier; Locke; NOVA].

For sake of argument (and survival) let's pretend the Earth is a cold, uniform, inert ball of rock. While we're at it, let's ignore air resistance.

At the Earth's surface, gravity pulls on us at 32 feet (9.8 meters) per second squared. That means that, for each second you fall, you speed up by 32 feet per second -- but only near Earth's surface. Gravity is a function of mass, and mass is a property of matter. On the surface, all of Earth's matter lies below your feet but, as you fall, more and more of it surrounds you, exerting its own gravity. These horizontal tugs counterbalance each other and cancel out, but the increasing proportion of mass above your head exerts a growing counterforce to the proportionately decreasing mass below, so your acceleration slows as you near the core. At the planet's center, your acceleration due to gravity is zero -- Earth's mass surrounds you, gravity cancels out and you are weightless [sources: Locke; Singh].

You're still moving at a heck of a clip, though, so don't expect to stop there. Halfway to the center, your speed hits 15,000 mph (24,000 kph); 21 minutes after jumping in, you blow past the center at 18,000 mph (29,000 kph). Another 21 minutes later, with gravity slowing you as you go, you reach the far side and stop briefly in midair. Unless someone catches you, you'll then head back the way you came and start all over again. In our idealized case, this will continue indefinitely, like a pendulum or a spring, in a process called harmonic motion

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Funniest Math/Science Questions and answers

Q. How can you drop a raw egg onto a concrete floor without cracking it?

A. Concrete floors are very hard to crack!



Q. If it took eight men ten hours to build a wall, how long would it take
four men to build it?

A. No time at all it is already built.



Q. If you had three apples and four oranges in one hand and four apples
and three oranges in the other hand, what would you have?

A. Very large hands. (Good one)



Q. How can you lift an elephant with one hand?

A. It is not a problem, since you will never find an elephant with
one hand.




Q. How can a man go eight days without sleep?

A. No Probs , He sleeps at night.



Q. If you throw a red stone into the blue sea what it will become?

A. It will Wet or Sink as simple as that.



Q. What looks like half apple ?

A: The other half.



Q. What can you never eat for breakfast ?

A: Dinner.



Q. What happened when wheel was invented ?

A: It caused a revolution.



Q. Bay of Bengal is in which state?

A: Liquid

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Math Puzzle Questions

1. What is come in place of question mark (?) in the following series?





(a) HS

(b) IT

(c) IS

(d) HT



Solution:

2. If A is substituted by 4, B by 3, C by 2, D by 4, E by 3, F by 2 and so on, then what will be total of the numerical values of the letters of the word SICK?

(a) 11

(b) 12

(c) 10

(d) 9



Solution:

Total value = 4 + 2 + 2 + 3 = 11.

Answer: (a)



3. Four of the following five are alike in a certain way and hence form a group. Which one does not belong to the group?

(a) 52

(b) 70

(c) 48

(d) 68



Solution:All the numbers are multiple of 4, except 70.

Answer: (b)



4. If U is denoted by 7, M by 2, I by 5, O by 1, K by 8 and J by 4, then what will be the numeric form of the word MOUJIK when written in the reverse order?

(a) 217458

(b) 845712

(c) 854712

(d) 857412



Solution:

217458 is the number.

Now reverse the number 854712

Answer: (c)



5. How many letters of the word FAINTS, will their order in the word and that when the letters are arranged in the alphabetical order, remain the same?

(a) Two

(b) One

(c) Three

(d) Nil



Solution:

When the letters are arranged in the alphabetical order, two remains the same.

Answer: (a)



6. In a certain code GARNISH is written as RGAINHS. How will GENIOUS be written in that code?

(a) NEGOISU

(b) NGEOISU

(c) NGESUOI

(d) NEGSUOI



Solution:

So now, GENIOUS be written as;

Answer: (b)



7. How many such pairs of letters are there in the word MISPLACE each of which has as many letters between its two letters in the word as there are between them in the English alphabet?

(a) One

(b) Nil

(c) Two

(d) Three



Solution:

Answer: (c)



8. In a certain code INKER is written as GLLGT and GLIDE is written as EJJFG. How will JINKS be written in that code?

(a) GFOMU

(b) HGMMU

(c) HGOGH

(d) HGOMU



Solution:

As,

And,

Similarly, JINKS be written as;

Answer: (d)



9. If ‘AND’ is written as ‘EQF’ and ‘THE’ as ‘XKG’ then how will ‘COM’ be written?

(a) HRO

(b) GQO

(c) GRO

(d) GRN



Solution:

As,

And,

Similarly, ‘COM’ be written as;

Answer: (c)



10. Four of the following five are alike in a certain way based on the positions of their elements in the English alphabet and hence form a group. Which one does not belong to the group?

(a) UQ

(b) KG

(c) SO

(d) QL



Solution:

QL

Answer: (d)

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