MCQOPTIONS
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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1851. |
Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from..... |
| A. | east |
| B. | west |
| C. | northeast |
| D. | southeast |
| Answer» B. west | |
| 1852. |
One should not connect a number of electrical appliances to the same power socket because___ |
| A. | this can damage the appliances due to overloading |
| B. | this can damage the domestic wiring due to overloading |
| C. | this can damage the electrical meter |
| D. | the appliance will not get full voltage |
| Answer» C. this can damage the electrical meter | |
| 1853. |
Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I. Diffusion |
| A. | I, II and III |
| B. | I and II |
| C. | II and III |
| D. | I and III |
| Answer» D. I and III | |
| 1854. |
Planets are_______ |
| A. | luminous heavenly bodies revolving around a star |
| B. | non-luminous heavenly bodies |
| C. | luminous heavenly bodies that twinkle |
| D. | D. luminous heavenly bodies that do not twinkle |
| Answer» C. luminous heavenly bodies that twinkle | |
| 1855. |
Mica is used in electrical appliances such as electric iron because mica is___ |
| A. | a good conductor of heat but a bad conductor of electricity |
| B. | a bad conductor of heat but a good conductor of electricity |
| C. | a good conductor of heat as well as electricity |
| D. | a bad conductor of heat as well as electricity |
| Answer» B. a bad conductor of heat but a good conductor of electricity | |
| 1856. |
Identify the vector quantity from the following? |
| A. | Heat |
| B. | Volume |
| C. | Time |
| D. | Work |
| Answer» E. | |
| 1857. |
Radiocarbon dating technique is used to estimate the age of..... |
| A. | rocks |
| B. | monuments |
| C. | soil |
| D. | fossils |
| Answer» E. | |
| 1858. |
Large astronomical telescopes always use as objective___. |
| A. | lens |
| B. | mirror |
| C. | combinations of lenses |
| D. | None of the above |
| Answer» D. None of the above | |
| 1859. |
Rainbow is due to____ |
| A. | absorption of sunlight in minute water droplets |
| B. | diffusion of sunlight through water droplets |
| C. | ionisation of water deposits |
| D. | refraction and reflection of sunlight by water droplets |
| Answer» E. | |
| 1860. |
Isotopes of an element contain______. |
| A. | The same number of protons but different number of neutrons |
| B. | The same number of neutrons but different number of protons |
| C. | Equal number of protons and electrons |
| D. | Equal number of nucleons |
| Answer» B. The same number of neutrons but different number of protons | |
| 1861. |
Stars which appear single to the naked eye but are double when seen through a telescope are? |
| A. | novas and supernovas |
| B. | binaries |
| C. | asteroids |
| D. | quasars |
| Answer» C. asteroids | |
| 1862. |
ML2T-2 is the dimensional formula for? |
| A. | moment of inertia |
| B. | pressure |
| C. | elasticity |
| D. | couple acting on a body |
| Answer» E. | |
| 1863. |
Solar eclipse will take place when_____. |
| A. | the sun is between the moon and the earth |
| B. | the earth is between the moon and the sun |
| C. | the moon is between the sun and the earth |
| D. | the moon does not lie on the line joining the sun and the earth |
| Answer» D. the moon does not lie on the line joining the sun and the earth | |
| 1864. |
Mach number is used in connection with the speed of__. |
| A. | sound |
| B. | aircraft |
| C. | spacecraft |
| D. | ships |
| Answer» C. spacecraft | |
| 1865. |
Supersonic plane fly with the speed____. |
| A. | less than the speed of sound |
| B. | of sound |
| C. | greater than the speed of sound |
| D. | of light |
| Answer» D. of light | |
| 1866. |
On a stationary sail boat, air is blown from a fan attached to the boat. The boat___ |
| A. | moves in opposite direction in which the air is blown |
| B. | does not move |
| C. | moves in the same direction in which air blows |
| D. | spins around |
| Answer» C. moves in the same direction in which air blows | |
| 1867. |
Optical fibre works on the_____. |
| A. | principle of refraction |
| B. | total internal reflection |
| C. | scattering |
| D. | interference |
| Answer» C. scattering | |
| 1868. |
Mercury is commonly used as a thermometric fluid rather than water because___ |
| A. | specific heat of mercury is less than water |
| B. | specific heat of mercury is more than water |
| C. | mercury has greater visibility than water |
| D. | density of mercury is more than the water |
| Answer» D. density of mercury is more than the water | |
| 1869. |
Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit___. |
| A. | X-rays |
| B. | ultraviolet light |
| C. | visible light |
| D. | radio waves |
| Answer» D. radio waves | |
| 1870. |
Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open_____ |
| A. | at sea level |
| B. | at the top of Mt. Everest |
| C. | at a place in a valley below sea level |
| D. | in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level |
| Answer» D. in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level | |
| 1871. |
Radio telescopes are better than optical telescopes because___ |
| A. | they can detect faint galaxies which no optical telescope can |
| B. | they can work even in cloudy conditions |
| C. | they can work during the day and night |
| D. | All of the above |
| Answer» E. | |
| 1872. |
Railway tracks are banked on curves___ |
| A. | necessary centrifugal force may be obtained from the horizontal component weight of the train |
| B. | to avoid frictional force between the tracks and wheels |
| C. | necessary centripetal force may be obtained from the horizontal component of the weight of the train |
| D. | the train may not fly off in the opposite direction |
| Answer» D. the train may not fly off in the opposite direction | |
| 1873. |
Light travels at the fastest speed in? |
| A. | Glass |
| B. | Water |
| C. | Hydrogen |
| D. | Vacuum |
| Answer» E. | |
| 1874. |
On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because___ |
| A. | metals have higher thermal capacity than plastics |
| B. | plastics have a lower density than metals |
| C. | metals are good conductor of heat |
| D. | plastics have a higher thermal conductivity than metals |
| Answer» D. plastics have a higher thermal conductivity than metals | |
| 1875. |
oil raise up the wick in a lamp. The principle involves__- |
| A. | the diffusion of oil through the wick |
| B. | the liquid state of oil |
| C. | capillary action phenomenon |
| D. | volatility of oil |
| Answer» D. volatility of oil | |
| 1876. |
Sound travels at the fastest speed in? |
| A. | steel |
| B. | water |
| C. | air |
| D. | vacuum |
| Answer» B. water | |
| 1877. |
Superconductors are substances which___ |
| A. | conduct electricity at low temperature |
| B. | offer high resistance to the flow of current |
| C. | offer no resistance to the flow of electricity |
| D. | conduct electricity at high temperatures |
| Answer» D. conduct electricity at high temperatures | |
| 1878. |
One thousand microns is equal to? |
| A. | 10-3m |
| B. | 10-6m |
| C. | 10-9m |
| D. | 10-12m |
| Answer» B. 10-6m | |
| 1879. |
Inside an aeroplane, flying at a high altitude_____ |
| A. | the pressure is the same as that outside |
| B. | normal atmospheric pressure is maintained by the use of air pump |
| C. | the pressure inside is less than the pressure outside |
| D. | normal humidity and partial vacuum are maintained |
| Answer» C. the pressure inside is less than the pressure outside | |
| 1880. |
Stars twinkle because_____ |
| A. | the intensity of light emitted by them changes with time |
| B. | the distance of the stars from the earth changes with time |
| C. | continuously, consequently the position of the image of a start changes with time |
| D. | the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere |
| Answer» D. the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere | |
| 1881. |
Suitable impurities are added to a semiconductor depending on its use. This is done in order to__ |
| A. | increase its life |
| B. | enable it to withstand higher voltages |
| C. | increase its electrical conductivity |
| D. | increase its electrical resistivity |
| Answer» D. increase its electrical resistivity | |
| 1882. |
It takes much longer to cook food in the hills than in the plains, because_____ |
| A. | in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time |
| B. | due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil |
| C. | in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere |
| D. | in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking |
| Answer» B. due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil | |
| 1883. |
Moment of inertia is? |
| A. | vector |
| B. | scalar |
| C. | phasor |
| D. | tensor |
| Answer» E. | |
| 1884. |
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because___ |
| A. | mercury is a metal |
| B. | density of mercury is greater than that of water |
| C. | cohesion of mercury is greater than its adhesion with glass |
| D. | cohesion of water is greater than its adhesion with glass |
| Answer» D. cohesion of water is greater than its adhesion with glass | |
| 1885. |
Sound of frequency below 20 Hz is called? |
| A. | audio sounds |
| B. | infrasonic |
| C. | ultrasonic |
| D. | supersonics |
| Answer» C. ultrasonic | |
| 1886. |
On a rainy day, small oil films on water show brilliant colours. This is due to___ |
| A. | dispersion |
| B. | interference |
| C. | diffraction |
| D. | polarization |
| Answer» C. diffraction | |
| 1887. |
Materials for rain-proof coats and tents owe their water-proof properties to___. |
| A. | surface tension |
| B. | viscosity |
| C. | specific gravity |
| D. | elasticity |
| Answer» B. viscosity | |
| 1888. |
Point A is at a lower electrical potential than point B. An electron between them on the line joining them will___. |
| A. | move towards A |
| B. | move towards B |
| C. | move at right angles to the line joining A and B |
| D. | remain at rest |
| Answer» C. move at right angles to the line joining A and B | |
| 1889. |
RADAR is used for? |
| A. | locating submerged submarines |
| B. | receiving a signals in a radio receiver |
| C. | locating geostationary satellites |
| D. | detecting and locating the position of objects such as aeroplanes |
| Answer» E. | |
| 1890. |
Lux is the SI unit of? |
| A. | Intensity of illumination |
| B. | Luminous efficiency |
| C. | Luminous flux |
| D. | Luminous intensity |
| Answer» B. Luminous efficiency | |
| 1891. |
Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2? |
| A. | 0.14 m/s |
| B. | 140 m/s |
| C. | 1.4 km/s |
| D. | 14 m/s |
| Answer» E. | |
| 1892. |
Of the following properties of a wave, the one that is independent of the other is its____ |
| A. | amplitude |
| B. | velocity |
| C. | wavelength |
| D. | frequency |
| Answer» B. velocity | |
| 1893. |
It is more difficult to walk on a sandy road than on a concrete road because___ |
| A. | sand is soft and concreter is hard |
| B. | the friction between sand and feet is less than that between concrete and feet |
| C. | the friction between sand and feet is more than that between concrete and feet |
| D. | the sand is grainy but concrete is smooth |
| Answer» C. the friction between sand and feet is more than that between concrete and feet | |
| 1894. |
Sound waves in air are_____. |
| A. | transverse |
| B. | ongitudinal |
| C. | electromagnetic |
| D. | polarised |
| Answer» C. electromagnetic | |
| 1895. |
Magnetism at the centre of a bar magnet is__. |
| A. | minimum |
| B. | maximum |
| C. | zero |
| D. | minimum or maximum |
| Answer» D. minimum or maximum | |
| 1896. |
If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same____. |
| A. | velocity |
| B. | momentum |
| C. | acceleration |
| D. | kinetic energy |
| Answer» C. acceleration | |
| 1897. |
Rectifiers are used to convert? |
| A. | Direct current to Alternating current |
| B. | Alternating current to Direct current |
| C. | high voltage to low voltage |
| D. | low voltage to high voltage |
| Answer» C. high voltage to low voltage | |
| 1898. |
Pick out the scalar quantity? |
| A. | force |
| B. | pressure |
| C. | velocity |
| D. | acceleration |
| Answer» C. velocity | |
| 1899. |
Let a thin capillary tube be replaced with another tube of insufficient length ,then we find that water___ |
| A. | will overflow |
| B. | will not rise |
| C. | depressed |
| D. | change its meniscus |
| Answer» C. depressed | |
| 1900. |
Pa(Pascal) is the unit for? |
| A. | Thrust |
| B. | Pressure |
| C. | Frequency |
| D. | Conductivity |
| Answer» C. Frequency | |