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.
| 551. |
A raised hammer possesses: |
| A. | Kinetic energy |
| B. | Mechanical energy |
| C. | Muscular energy |
| D. | Potential energy |
| Answer» E. | |
| 552. |
How much work is done in moving a charge of 4 C across two points having a potential difference of 12 V? |
| A. | 48 J |
| B. | 3 J |
| C. | 40 J |
| D. | 12 J |
| Answer» B. 3 J | |
| 553. |
How are the ceilings of concert halls and cinema halls designed, in order to make a sound reach all corners of the hall after reflection? |
| A. | Curved |
| B. | Flat |
| C. | Straight |
| D. | Open Top |
| Answer» B. Flat | |
| 554. |
If we open a bottle of perfume, its smell spreads in the entire room within a short time due to the process of ________. |
| A. | Evaporation |
| B. | Sublimation |
| C. | Diffusion |
| D. | Decantation |
| Answer» D. Decantation | |
| 555. |
Pick up the wrong statement of the following: |
| A. | Light year is the unit of time. |
| B. | Cream is separated from milk when it is churned. this is due to centrifugal force. |
| C. | The density of water is maximum at 4° C temperature. |
| D. | The velocity of sound on moon is zero |
| Answer» B. Cream is separated from milk when it is churned. this is due to centrifugal force. | |
| 556. |
In a ________ wave particles of the medium vibrate in a direction perpendicular to the direction of wave propagation. |
| A. | Longitudinal |
| B. | Rolling |
| C. | Transverse |
| D. | Field |
| Answer» D. Field | |
| 557. |
In the figure given below, if an object is moved from A To B (consider the height of AB = h), in which situation the work done on the object is mgh? |
| A. | In path 1 |
| B. | Both path 1 and 2 |
| C. | In path 2 |
| D. | Neither path 1 nor path 2 |
| Answer» C. In path 2 | |
| 558. |
______ waves include visible light waves, X-rays, gamma rays, radio waves, microwaves, ultraviolet and infrared waves. |
| A. | Electromagnetic |
| B. | Mechanical |
| C. | Electric |
| D. | Magnetic |
| Answer» B. Mechanical | |
| 559. |
Name the high-frequency radiation produced in nuclear reactions and also emitted by radioactive nuclei that are used in medicine to destroy cancer cells. |
| A. | Gamma rays |
| B. | Ultraviolet waves |
| C. | Light waves |
| D. | X-rays |
| Answer» B. Ultraviolet waves | |
| 560. |
It has been found that a nucleus of mass number 'A' has a radius "R = RoAy," where Ro = 1.2 × 10–15 m. Here 'y' is equal to ________. |
| A. | 1/2 |
| B. | 2 |
| C. | 3 |
| D. | 1/3 |
| Answer» E. | |
| 561. |
A radioactive nucleus (Parent) emits one alpha and two beta particles, and then the daughter nucleus is: |
| A. | Isodiaphere |
| B. | Isobar |
| C. | Isotope |
| D. | Isotone |
| Answer» D. Isotone | |
| 562. |
Electromagnetic radiation is emitted by ________. |
| A. | Neutron |
| B. | Electrons |
| C. | X-Ray |
| D. | Ultra Sonic |
| Answer» D. Ultra Sonic | |
| 563. |
If SI unit of mass is Kg, what is the SI unit of weight? |
| A. | Kg/s2 |
| B. | Kg |
| C. | Kg m/s |
| D. | Newton |
| Answer» E. | |
| 564. |
Lenz's law is a consequence of : |
| A. | Conservation of change |
| B. | Conservation of momentum |
| C. | Conservation of energy |
| D. | Conservation of current |
| Answer» D. Conservation of current | |
| 565. |
A Sonar of a ship sends sound waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor. |
| A. | 3750m |
| B. | 7500m |
| C. | 1875m |
| D. | 5000m |
| Answer» B. 7500m | |
| 566. |
A flying aeroplane has __________. |
| A. | Only potential energy |
| B. | Only kinetic energy |
| C. | Both potential and kinetic energy |
| D. | Neither potential nor kinetic |
| Answer» D. Neither potential nor kinetic | |
| 567. |
An isotope of cadmium has mass number 114 and atomic number 48. How many neutrons does it have? |
| A. | 162 |
| B. | 66 |
| C. | 48 |
| D. | 114 |
| Answer» C. 48 | |
| 568. |
According to Stefan’s law, the radiant energy emitted by a black body is directly proportional to which power of its absolute temperature? |
| A. | Second power |
| B. | Third power |
| C. | Fourth power |
| D. | Sixth power |
| Answer» D. Sixth power | |
| 569. |
In nuclear reactions, there is conservation of |
| A. | mass only |
| B. | momentum only |
| C. | energy only |
| D. | mass, energy and momentum |
| Answer» E. | |
| 570. |
A nuclear reaction gives off a total of 1017 J energy. How much mass is spent in the process? |
| A. | 111 kg |
| B. | 1.11 kg |
| C. | 0.11 kg |
| D. | 81.3 kg |
| Answer» C. 0.11 kg | |
| 571. |
Kinetic friction in comparison to static friction is |
| A. | more |
| B. | less |
| C. | equal |
| D. | equal or more |
| Answer» C. equal | |
| 572. |
Identify the Boson. |
| A. | Electron |
| B. | Positron |
| C. | Neutrino |
| D. | Alpha particles |
| Answer» E. | |
| 573. |
Force = ________. |
| A. | mass × acceleration |
| B. | mass × volume |
| C. | mass × pressure |
| D. | mass × velocity |
| Answer» B. mass × volume | |
| 574. |
Find the acceleration (in m/s2) produced in a body of mass 10 kg when a force of 20 N is applied on it |
| A. | 200 |
| B. | 4 |
| C. | 2 |
| D. | 100 |
| Answer» D. 100 | |
| 575. |
Distance covered by an object per unit time is called: |
| A. | Pressure |
| B. | Speed |
| C. | Motion |
| D. | Acceleration |
| Answer» C. Motion | |
| 576. |
In physics work done is defined asA force has acted on an object without causing any displacement of it.Object is displacedA force has acted on the objectAll of the above |
| A. | B and C are correct |
| B. | A and B are correct |
| C. | A and C are correct |
| D. | None of the Above |
| Answer» E. | |
| 577. |
If the velocity of a body is doubled, its momentum ________. |
| A. | remains same |
| B. | doubles |
| C. | becomes half |
| D. | becomes 4 times |
| Answer» C. becomes half | |
| 578. |
During summer, water kept in an earthen pot becomes cool because of the phenomenon of ________. |
| A. | Osmosis |
| B. | Evaporation |
| C. | Diffusion |
| D. | Transpiration |
| Answer» C. Diffusion | |
| 579. |
A diver is able to cut through in a swimming pool. Which characteristic property of particles of matter is exhibited by this? |
| A. | The interparticle forces of attraction in water are strong. |
| B. | The interparticle forces of attraction in water are weak |
| C. | Particles of matter are continuously moving |
| D. | Particles of matter cannot be seen with the naked eye. |
| Answer» C. Particles of matter are continuously moving | |
| 580. |
A 40 kg girl runs up a flight of stairs having a rise of 5 m in 4 s. The power developed by her will be ________.(take g = 10 m/s2) |
| A. | 100 W |
| B. | 200 W |
| C. | 500 W |
| D. | 2000 W |
| Answer» D. 2000 W | |
| 581. |
Blue color of the sky is due to |
| A. | Scattering of light |
| B. | Dispersion of light |
| C. | Interference of light |
| D. | Emission of more blue light as compared to other colours by the sun |
| Answer» B. Dispersion of light | |
| 582. |
If a body is in accelerated motion, then the distance–time graph is: |
| A. | A straight line inclined to time axis |
| B. | A curved line |
| C. | A straight line parallel to the distance axis |
| D. | A straight line parallel to time axis |
| Answer» C. A straight line parallel to the distance axis | |
| 583. |
If an object starts moving and if there is no friction at all, what happens? |
| A. | The object can never stop |
| B. | The object stops immediately |
| C. | The object stops after sometime |
| D. | The object starts flying |
| Answer» B. The object stops immediately | |
| 584. |
A hydraulic lift woks on ________. |
| A. | Hooke's law |
| B. | Pascal's Law |
| C. | Newton's First Law of Motion |
| D. | Archimedes' Law |
| Answer» C. Newton's First Law of Motion | |
| 585. |
Graphite is used in nuclear reactor _________. |
| A. | as a lubricant |
| B. | as fuel |
| C. | as an insulator |
| D. | for reducing the velocity of neutrons |
| Answer» E. | |
| 586. |
Name the device that measures the distance travelled by a vehicle. |
| A. | Odometer |
| B. | Ammeter |
| C. | Barometer |
| D. | Spherometer |
| Answer» B. Ammeter | |
| 587. |
A boy of mass 50 kg, runs up a staircase of 45 steps in 10s. If the height of each step is 14 cm. find his power. Take g = 10 ms-2 |
| A. | 315 ms |
| B. | 315 W |
| C. | 337.5 W |
| D. | 310.55 J |
| Answer» C. 337.5 W | |
| 588. |
A sound wave has a frequency of 4 kHz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is: |
| A. | 0.5 s |
| B. | 4.0 s |
| C. | 2.0 s |
| D. | 1.0 s |
| Answer» D. 1.0 s | |
| 589. |
Electromagnetic wave consists of periodically oscillating electric and magnetic vectors? |
| A. | In randomly oriented planes but vibrating in phase. |
| B. | In mutually perpendicular planes but vibrating in phase |
| C. | In mutually perpendicular planes but vibrating with a phase difference of π |
| D. | In mutually perpendicular planes but vibrating with a phase difference of π/f |
| Answer» C. In mutually perpendicular planes but vibrating with a phase difference of π | |
| 590. |
Energy possessed by an object by its position or configuration is called ________. |
| A. | Potential energy |
| B. | Kinetic energy |
| C. | Electrical energy |
| D. | Nuclear energy |
| Answer» B. Kinetic energy | |
| 591. |
Consider the following phenomena:1. Light is affected by gravity.2. The Universe is constantly expanding.3. Matter warps its surrounding space-time.Which of the above is/are the prediction/predictions of Albert Einstein's General Theory of Relativity, often discussed in media? |
| A. | 1 and 2 only |
| B. | 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» E. | |
| 592. |
Anemometer is an instrument used to |
| A. | Find the wind direction |
| B. | Measure humidity |
| C. | Measure wind speed |
| D. | Measure precipitation |
| Answer» D. Measure precipitation | |
| 593. |
At a particular temperature, sound propagates in ______ at the fastest speed . |
| A. | water |
| B. | vacuum |
| C. | iron |
| D. | air |
| Answer» D. air | |
| 594. |
If light falls perpendicularly on a plane mirror, what will be the angle in which it will be reflected? |
| A. | 90 degrees |
| B. | 45 degrees |
| C. | 360 degrees |
| D. | 180 degrees |
| Answer» B. 45 degrees | |
| 595. |
An object of mass 12 kg is at a certain height above the ground. If the potential energy of the object is 480 J, find the height at which the object is with respect to the ground. Given, g = 10 ms-2. |
| A. | 5 m |
| B. | 8 m |
| C. | 4 m |
| D. | 6 m |
| Answer» D. 6 m | |
| 596. |
How much work is done when one Coulomb charge moves against a potential difference of 1 Volt? |
| A. | 1 Watt |
| B. | 1 Ampere |
| C. | 1 Coulomb |
| D. | 1 Joule |
| Answer» E. | |
| 597. |
Half lives of two radioactive nuclei A and B are 10 minutes and 20 minutes, respectively. If, initially a sample has equal number of nuclei, then after 60 minutes, the ratio of decayed numbers of nuclei A and B will be: |
| A. | 3 : 8 |
| B. | 1 : 8 |
| C. | 8 : 1 |
| D. | 9 : 8 |
| Answer» E. | |
| 598. |
Ocean thermal energy is due to __________. |
| A. | energy stored by waves in the ocean |
| B. | temperature difference at different levels in the ocean |
| C. | pressure difference at different levels in the ocean |
| D. | tides arising out in the ocean |
| Answer» C. pressure difference at different levels in the ocean | |
| 599. |
A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds. |
| A. | 4 |
| B. | 72 |
| C. | 36 |
| D. | 8 |
| Answer» D. 8 | |
| 600. |
If the acceleration due to gravity on the surface of the earth is g, then the acceleration due to gravity on the surface of a planet whose mass is double that of earth and radius is same as that of the earth is _______. |
| A. | 2g |
| B. | g |
| C. | g/2 |
| D. | 4g |
| Answer» B. g | |