MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 563 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge (GK) knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
When an object is heated, the molecules of that object - |
| A. | began to move faster |
| B. | lose energy |
| C. | become heavier |
| D. | become lighter |
| Answer» B. lose energy | |
| 502. |
What is the phenomenon which established the transverse nature of light? |
| A. | Reflection |
| B. | Interference |
| C. | Diffraction |
| D. | Polarisation |
| Answer» E. | |
| 503. |
Which of the following statements is true when we see 'rainbow'? |
| A. | We face sun and raindrops |
| B. | 11 Km/Sec. |
| C. | In light rainfall, we face Sun |
| D. | The sky remains clear and the sun is at lower position in the sky |
| Answer» D. The sky remains clear and the sun is at lower position in the sky | |
| 504. |
A person wears spectators with concave lenses. It means that normally (when not using glasses), the image of distant objects is focused in his eyes |
| A. | behind the retina |
| B. | in front of the retina |
| C. | on the retina |
| D. | on the blind spot |
| Answer» C. on the retina | |
| 505. |
Which one of the following is not allied to Geophysical Sciences? |
| A. | Hydrology |
| B. | Meteorology |
| C. | Palaeontology |
| D. | Seismology |
| Answer» D. Seismology | |
| 506. |
Flywheel is an important part of a steam engine because it |
| A. | accelerates the speed of the engine |
| B. | helps the engine in keeping the speed uniform |
| C. | decreases the moment of inertia |
| D. | gives strength to the engine |
| Answer» C. decreases the moment of inertia | |
| 507. |
A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. |
| A. | The ball falls |
| B. | Behind him |
| C. | In front of him |
| D. | Into his hand |
| Answer» B. Behind him | |
| 508. |
The constant temperature, the product of pressure and volume of a given amount of a gas is constant . This is . |
| A. | Gay-Lussac law |
| B. | Charles s law |
| C. | Boyle s law |
| D. | Pressure law |
| Answer» D. Pressure law | |
| 509. |
The device used to change the speed of an electric fan is - |
| A. | Amplifier |
| B. | Regulator |
| C. | Switclh |
| D. | Rectifier |
| Answer» C. Switclh | |
| 510. |
On a cold day when the room temperature is 15 C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15 C, because |
| A. | metals have higher thermal capacity than plastics |
| B. | plastics have a lower density than metals |
| C. | metals are good conductors of heat |
| D. | plastics have a higher thermal conductivity than metals |
| Answer» D. plastics have a higher thermal conductivity than metals | |
| 511. |
If the temperature inside a room is increased, the relative humidity will ? |
| A. | increase |
| B. | decrease |
| C. | remain unchanged |
| D. | none of these |
| Answer» C. remain unchanged | |
| 512. |
Which one of the following elements shows variable equivalent mass? |
| A. | Zinc |
| B. | Silver |
| C. | Calcium |
| D. | Iron |
| Answer» E. | |
| 513. |
The person suffering from myopia cannot see the objects at: |
| A. | Near distance |
| B. | Longer distance |
| C. | any distance |
| D. | Close to eye |
| Answer» C. any distance | |
| 514. |
Person who is colorblind cannot distinguish between |
| A. | Black and yellow |
| B. | Red and green |
| C. | Yellow and white |
| D. | Green and blue |
| Answer» C. Yellow and white | |
| 515. |
Which of the following is not a part of a CRT? |
| A. | Phosphor screen |
| B. | Shadow mask |
| C. | Electron gun |
| D. | Gas plasma |
| Answer» E. | |
| 516. |
Small bubbles are perfectly spherical because of |
| A. | Gravity |
| B. | Pressure |
| C. | Viscosity |
| D. | Surface tension |
| Answer» E. | |
| 517. |
Two bodies kept at a certain distance feel a gravitational force F to each other. If the distance between them is made double the former distance, the force will be - |
| A. | 2F |
| B. | F/2 |
| C. | 4F |
| D. | F/4 |
| Answer» E. | |
| 518. |
The part of the eye having the largest refractive index is - |
| A. | cornea |
| B. | aqueous humor |
| C. | lens |
| D. | vitreous humor |
| Answer» D. vitreous humor | |
| 519. |
What is the maximum value of deforming force up to which a material shows elastic property and above which the material loses it? |
| A. | Elasticity |
| B. | Strain |
| C. | Elastic Limit |
| D. | Stress |
| Answer» E. | |
| 520. |
Study of life in outer space is known as - |
| A. | endbiology |
| B. | exobiology |
| C. | enterbiology |
| D. | neobiology |
| Answer» C. enterbiology | |
| 521. |
Which one of the following is responsible for the working of New-ton's colour disc experiment? |
| A. | Formation of pure spectra |
| B. | Formation of impure spectra |
| C. | Persistence of vision |
| D. | Principle of complementary colour |
| Answer» D. Principle of complementary colour | |
| 522. |
What is the maximum value of deforming force upto which a material shows elastic property and above which the material loses it? |
| A. | Elasticity |
| B. | Strain |
| C. | Elastic Limit |
| D. | Stress |
| Answer» D. Stress | |
| 523. |
What is colour of light related to? |
| A. | Amplitude |
| B. | Frequency |
| C. | Quality |
| D. | Velocity |
| Answer» B. Frequency | |
| 524. |
For which among the following house appliances, magnet is an essential part? |
| A. | Calling bell |
| B. | Fan |
| C. | Washing machine |
| D. | All of the above |
| Answer» E. | |
| 525. |
Which of the following parts of the sunlight makes the solar cooker hot? |
| A. | Ultra violet |
| B. | Red light |
| C. | Infra red |
| D. | Cosmic rays |
| Answer» D. Cosmic rays | |
| 526. |
Tape recorder should not be kept near one of the following things |
| A. | Clock |
| B. | Magnet |
| C. | Electrical switchboard |
| D. | Radio |
| Answer» C. Electrical switchboard | |
| 527. |
For a person having hypermetropia, the near point is |
| A. | greater than 25 cm |
| B. | greater than 50 cm |
| C. | less than 25 cm |
| D. | infinity |
| Answer» B. greater than 50 cm | |
| 528. |
The mercury and sodium street lamps light up because of |
| A. | Atomic emission |
| B. | Atomic absorption |
| C. | Electron emission |
| D. | Electron absorption |
| Answer» B. Atomic absorption | |
| 529. |
Which of the following criterion is used for any metal to be used as a cooking material? |
| A. | More specific heat |
| B. | More thermal conductivity |
| C. | Less thermal conductivity |
| D. | Less electrical conductivity |
| Answer» D. Less electrical conductivity | |
| 530. |
Golden view of sea shell is due to - |
| A. | Diffraction |
| B. | Dispersion |
| C. | Polarization |
| D. | Reflection |
| Answer» D. Reflection | |
| 531. |
A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of |
| A. | gravitational force between train and man. |
| B. | illusion of the man |
| C. | the centripetal force |
| D. | pressure difference due to fast moving air in between |
| Answer» E. | |
| 532. |
The element required for Solar energy conversion - |
| A. | Beryllium |
| B. | Silicon |
| C. | Tantalum |
| D. | Ultra pure carbon |
| Answer» C. Tantalum | |
| 533. |
The south pole of the earth s magnet is near the geographical . |
| A. | south |
| B. | east |
| C. | west |
| D. | north |
| Answer» E. | |
| 534. |
The metallurgical process in which a metal is obtained in a fused state is called - |
| A. | roasting |
| B. | calcinations |
| C. | smelting |
| D. | froth floatation |
| Answer» D. froth floatation | |
| 535. |
The device which converts sound energy into electrical enemy is called |
| A. | Amplifier |
| B. | Speaker |
| C. | Microphone |
| D. | Transmitter |
| Answer» D. Transmitter | |
| 536. |
As we go from Equator to North pole the value of `S, the acceleration due to gravity |
| A. | remains the same |
| B. | decreases |
| C. | increases |
| D. | None of the above |
| Answer» D. None of the above | |
| 537. |
If a metal can be drawn into wires relatively easily it is called: |
| A. | malleable |
| B. | ductile |
| C. | extractive |
| D. | tactile |
| Answer» C. extractive | |
| 538. |
The apparent weight of a person in a lift which is moving down with uniform acceleration is . |
| A. | greater than the weight when the person is stationary |
| B. | twice the weight when the person is stationary |
| C. | less than the weight when the person is stationary |
| D. | same as the weight when the person is stationary |
| Answer» D. same as the weight when the person is stationary | |
| 539. |
When heated from 0 to 10 C volume of a given mass of water will - |
| A. | Increase gradually |
| B. | Decrease gradually |
| C. | Increase and after will decrease |
| D. | Decrease and after will increase |
| Answer» E. | |
| 540. |
Copper wires are generally used for electrical power transmission instead of iron wire because |
| A. | copper is cheaper than iron |
| B. | copper is lighter than iron |
| C. | copper is a better conductor of electricity than iron |
| D. | copper can take higher power than iron |
| Answer» D. copper can take higher power than iron | |
| 541. |
Alternating current is converted into direct current by a |
| A. | Transformer |
| B. | Dynamo |
| C. | Oscillator |
| D. | Rectifier |
| Answer» E. | |
| 542. |
A circular plate, a cube and a sphere, all made up of same material and having the same mass, are heated to 300 C and left in a room. Which of them will have the slowest rate of cooling? |
| A. | Circular plate |
| B. | Cube |
| C. | Sphere |
| D. | All will cool at the same rate |
| Answer» D. All will cool at the same rate | |
| 543. |
Weight of a person at a height of 2R from the centre of the earth, where R is the radius of the earth- |
| A. | remains same |
| B. | becomes half |
| C. | becomes twice |
| D. | becomes one-fourth |
| Answer» E. | |
| 544. |
The best conductor of electricity among the following is - |
| A. | copper |
| B. | iron |
| C. | aluminum |
| D. | silver |
| Answer» E. | |
| 545. |
Which of the following is a good conductor of heat but a bad conductor of electricity? |
| A. | Celluloid |
| B. | Rubber |
| C. | Asbestos |
| D. | Mica |
| Answer» E. | |
| 546. |
The nature of .fuse wire is |
| A. | high resistance and low melting point. |
| B. | high resistance and high melting point. |
| C. | low resistance and high melting point. |
| D. | low resistance and low melting point. |
| Answer» B. high resistance and high melting point. | |
| 547. |
Metals are good conductors of electricity because - |
| A. | they contain free electrons |
| B. | the atoms are lightly packed |
| C. | they have high melting point |
| D. | All of the above |
| Answer» B. the atoms are lightly packed | |
| 548. |
Good conductors have many loosely bound . |
| A. | neutrons |
| B. | protons |
| C. | positron |
| D. | electrons |
| Answer» E. | |
| 549. |
A light wave is incident over a plane surface with velocity x. After reflection the velocity becomes- |
| A. | x/2 |
| B. | x |
| C. | 2x |
| D. | x/4 |
| Answer» C. 2x | |
| 550. |
Why are covalent compounds poor conductors of electricity? |
| A. | Due to the presence of charged particles. |
| B. | Due to the absence of charged particles. |
| C. | Due to the presence of a triple bond. |
| D. | None of the above |
| Answer» C. Due to the presence of a triple bond. | |