MCQOPTIONS
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MCQOPTIONS
This section includes 2016 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1451. |
Rise of oil a wick is due to |
| A. | ensity of the oil |
| B. | iscosity of the oil |
| C. | urface tension of the oil |
| D. | ressure of the oil |
| Answer» D. ressure of the oil | |
| 1452. |
Why the needle of iron swims on water surface when it is kept gently ? |
| A. | t will remain under the water, when it will displace more water than its weight |
| B. | he density of needle is less than that of water |
| C. | ue to surface tension |
| D. | ue to its shape |
| Answer» D. ue to its shape | |
| 1453. |
If cream is removed from milk, its density |
| A. | ncreases |
| B. | ecreases |
| C. | emains the same |
| D. | ay increase or decrease |
| Answer» B. ecreases | |
| 1454. |
When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance ? |
| A. | our times |
| B. | wo times |
| C. | alf |
| D. | ne-fourth |
| Answer» B. wo times | |
| 1455. |
The following particles move with same kinetic energy. Which of them has maximum momentum ? |
| A. | lectron |
| B. | roton |
| C. | eutron |
| D. | lpha Particle |
| Answer» E. | |
| 1456. |
Flywheel is an important part of a steam engine because it : |
| A. | ccelerates the speed of the engine |
| B. | elps the engine in keeping the speed uniform |
| C. | ecreases the moment of inertia |
| D. | ives strength to the engine |
| Answer» C. ecreases the moment of inertia | |
| 1457. |
In uniform circular motion, the linear velocity is perpendicular to |
| A. | adius |
| B. | orce |
| C. | adius vector |
| D. | omentum |
| Answer» D. omentum | |
| 1458. |
A particle is thrown vertically upward. When it reaches the highest point, it has |
| A. | downward acceleration |
| B. | n upward acceleration |
| C. | downward velocity |
| D. | horizontal velocity |
| Answer» B. n upward acceleration | |
| 1459. |
A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ? |
| A. | ircle |
| B. | arabolic |
| C. | reat circle |
| D. | yper–parabolic |
| Answer» C. reat circle | |
| 1460. |
Rain drops fall from great height. Which among the following statements is true regarding it? |
| A. | hey fall with that ultimate velocity, which are different for different droplets |
| B. | hey fall with same ultimate velocity |
| C. | heir velocity increases and they fall with different velocity on the earth |
| D. | heir velocity increases and they fall with same velocity on the earth |
| Answer» B. hey fall with same ultimate velocity | |
| 1461. |
If an electron and a photon have the same wavelength, then they will have the same |
| A. | elocity |
| B. | inear momentum |
| C. | ngular momentum |
| D. | nergy |
| Answer» C. ngular momentum | |
| 1462. |
An object covers distance which is directly proportional to the square of the time. Its accelaration is |
| A. | ncreasing |
| B. | ecreasing |
| C. | ero |
| D. | onstant |
| Answer» E. | |
| 1463. |
The dimension of which of the following is the same as that of impulse ? |
| A. | olume |
| B. | omentum |
| C. | orque |
| D. | hange in the rate of momentum |
| Answer» C. orque | |
| 1464. |
Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? |
| A. | he heavier mass will reach greater height |
| B. | he lighter mass will reach greater height |
| C. | oth will reach the same height |
| D. | ny of them may reach greater height |
| Answer» D. ny of them may reach greater height | |
| 1465. |
A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ? |
| A. | oth the spheres will reach the ground simultaneously. |
| B. | will reach the ground first. |
| C. | will reach the ground first. |
| D. | he question is incomplete because the masses of the spheres are not given. |
| Answer» B. will reach the ground first. | |
| 1466. |
The angle in which a cricket ball should be hit to travel maximum horizontal distance is : |
| A. | 0° with horizontal |
| B. | 5° with horizontal |
| C. | 0° with horizontal |
| D. | 5° with horizontal |
| Answer» C. 0° with horizontal | |
| 1467. |
The point where total mass of a body is supposed to be concentrated is known as |
| A. | ead centre |
| B. | entre of mass |
| C. | entre of gravity |
| D. | entre of motion |
| Answer» C. entre of gravity | |
| 1468. |
A body moving in a circular path with a constant speed has a |
| A. | onstant velocity |
| B. | onstant acceleration |
| C. | onstant kinetic energy |
| D. | onstant displacement |
| Answer» D. onstant displacement | |
| 1469. |
A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps |
| A. | he ball will travel towards the center of the circle and fall down |
| B. | t will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down |
| C. | t will fall down at the same place where the string breaks |
| D. | one of these |
| Answer» C. t will fall down at the same place where the string breaks | |
| 1470. |
A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments |
| A. | s zero |
| B. | epends on the total mass of all the fragments |
| C. | epends on the speeds of various fragments |
| D. | s infinity |
| Answer» B. epends on the total mass of all the fragments | |
| 1471. |
The working of a rocket is based on the principle of: |
| A. | onservation of momentum |
| B. | onservation of mass |
| C. | onservation of energy |
| D. | onservation of angular momentum |
| Answer» B. onservation of mass | |
| 1472. |
It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because |
| A. | eights of buckets are balanced |
| B. | entre of gravity falls within the body |
| C. | entre of gravity and centre of equilibrium fall within the feet |
| D. | esultant weight of buckets is zero |
| Answer» D. esultant weight of buckets is zero | |
| 1473. |
What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero? |
| A. | emains constant |
| B. | ecomes zero |
| C. | ncreases exponentially |
| D. | one of the above |
| Answer» B. ecomes zero | |
| 1474. |
When the milk is churned vigorously the cream from it is separated out due to |
| A. | entripetal force |
| B. | ravitational force |
| C. | rictional force |
| D. | entrifugal force |
| Answer» E. | |
| 1475. |
If a body moves with a constant speed in a circle |
| A. | o work is done on it |
| B. | o force acts on it |
| C. | o acceleration is produced in it |
| D. | ts velocity remains constant |
| Answer» E. | |
| 1476. |
A sphere rolls down on two inclined planes of different angles but same height, it does so |
| A. | n the same time |
| B. | ith the same speed |
| C. | n the same time with the same speed |
| D. | n the same time with the same kinetic energy |
| Answer» C. n the same time with the same speed | |
| 1477. |
What should a person on a freely rotating turn table do to decrease his (angular) speed ? |
| A. | ring his hands together |
| B. | aise his hands up |
| C. | pread his hands outwards |
| D. | it down with raised hands |
| Answer» D. it down with raised hands | |
| 1478. |
The motion of a body around a circular path is an example of |
| A. | niform velocity, variable acceleration |
| B. | niform speed, uniform velocity |
| C. | niform speed, variable velocity |
| D. | niform speed, variable acceleration |
| Answer» B. niform speed, uniform velocity | |
| 1479. |
Damp clothes are dried in spin dryers by the action of |
| A. | entripetal forces |
| B. | entrifugal forces |
| C. | entral forces |
| D. | on central forces |
| Answer» C. entral forces | |
| 1480. |
The washing machine works on the principle of |
| A. | ialysis |
| B. | iffusion |
| C. | everse osmosis |
| D. | entrifugation |
| Answer» E. | |
| 1481. |
When a pail of water is swung in a vertical circle, the water does not fall out at the top of the loop when the speed is |
| A. | elow a certain minimum value irrespective of amount of water in the pail |
| B. | bove a certain minimum value irrespective of amount of water in the pail |
| C. | bove a certain minimum value depending on amount of water in the pail |
| D. | elow a certain minimum value depending on amount of water in the pail |
| Answer» C. bove a certain minimum value depending on amount of water in the pail | |
| 1482. |
During the motion of a projectile fired from the earth surface, ________ |
| A. | ts kinetic energy remains constant |
| B. | ts momentum remains constant |
| C. | ertical component of its velocity remains constant |
| D. | orizontal component of its velocity remains constant |
| Answer» E. | |
| 1483. |
A pilot has to release the bomb to hit a target |
| A. | ight above the target |
| B. | eyond the target |
| C. | efore the target |
| D. | one of these |
| Answer» D. one of these | |
| 1484. |
Knot is a measure of |
| A. | he speed of ship |
| B. | he curvature of spherical objects |
| C. | olar radiation |
| D. | ntensity of earthquake shock |
| Answer» B. he curvature of spherical objects | |
| 1485. |
The term ''Higgs Boson' is associated with |
| A. | ano Technology |
| B. | ncology |
| C. | od Particle |
| D. | tem Cell Research |
| Answer» D. tem Cell Research | |
| 1486. |
Angle of friction and angle of repose are |
| A. | qual to each other |
| B. | ot equal to each other |
| C. | roportional to each other |
| D. | one of the above |
| Answer» B. ot equal to each other | |
| 1487. |
A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ? |
| A. | hey must have the same volume |
| B. | hey must have the same density |
| C. | hey must have the same mass |
| D. | hey must be dropped in vacuum |
| Answer» E. | |
| 1488. |
A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding ? |
| A. | metres |
| B. | metres |
| C. | metres |
| D. | metre |
| Answer» D. metre | |
| 1489. |
A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle |
| A. | t the lower elevation than the bird |
| B. | t a higher elevation than the bird |
| C. | n the same direction as the bird |
| D. | ertically upwards |
| Answer» C. n the same direction as the bird | |
| 1490. |
Which one of the following is applicable to collision-coalescence process of precipitation? |
| A. | louds which do not extend beyond the freezing level |
| B. | louds which extend beyond the freezing level |
| C. | ll types of clouds |
| D. | irrocumulus cloud |
| Answer» B. louds which extend beyond the freezing level | |
| 1491. |
If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with |
| A. | onstant speed |
| B. | onstant velocity |
| C. | onstant acceleration |
| D. | arying acceleration |
| Answer» D. arying acceleration | |
| 1492. |
The dimension MLT–2 corresponds to |
| A. | orce |
| B. | ork done |
| C. | cceleration |
| D. | elocity |
| Answer» B. ork done | |
| 1493. |
The device which converts sound energy into electrical energy is called |
| A. | mplifier |
| B. | peaker |
| C. | icrophone |
| D. | ransmitter |
| Answer» D. ransmitter | |
| 1494. |
A person does some work of 1,000 J in 2 s. His power will be ________ |
| A. | 000W |
| B. | 5W |
| C. | 00W |
| D. | 0W |
| Answer» D. 0W | |
| 1495. |
A photo-electric cell converts |
| A. | echanical energy to electric energy |
| B. | eat energy to mechanical energy |
| C. | ight energy to chemical energy |
| D. | ight energy to electrical energy |
| Answer» E. | |
| 1496. |
A dynamo is used to convert |
| A. | echanical energy into electrical energy |
| B. | lectrical energy into mechanical energy |
| C. | lectrical energy into magnetic energy |
| D. | agnetic energy into mechanical energy |
| Answer» B. lectrical energy into mechanical energy | |
| 1497. |
A dynamo is a device which |
| A. | reates mechanical energy |
| B. | reates electrical energy |
| C. | onverts mechanical energy into electrical energy |
| D. | onverts electrical energy into mechanical energy |
| Answer» D. onverts electrical energy into mechanical energy | |
| 1498. |
1 Joule is Equal to |
| A. | 0^3 ergs |
| B. | 0^6 ergs |
| C. | 0^7 ergs |
| D. | 0^5 ergs |
| Answer» D. 0^5 ergs | |
| 1499. |
Electric Motor converts ________ energy to mechanical energy |
| A. | ound |
| B. | echanical |
| C. | hemical |
| D. | lectrical |
| Answer» E. | |
| 1500. |
A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum: |
| A. | ust after it is dropped |
| B. | hen it is just on the half-way |
| C. | ust before it touches the ground |
| D. | hen it touches the ground |
| Answer» D. hen it touches the ground | |