DRDO General Science Paper | DRDO STA Question Paper
CEPTAM STA/Technician/Assistant Exam General Science Model Question Paper
CEPTAM 10 DRDO Model Paper for General Science Topic
| 1 | A ball tied with a string to a rotating shaft revolves at uniform speed. As the shaft is suddenly brought to rest the string starts getting round the shaft with the angular velocity of the ball ?
(a) Increasing (b) decreasing (c) remaining constant (d) becoming zero |
| 2 | If an apple is released from an orbiting spaceship, it will –
(a) fall towards the earth (b) move along with spaceship at the same speed (c) move at a higher speed (d) move at a lower speed |
| 3 | What happens when water is cooled from 8ºC to 0ºC ?
(a) Its volume decreases uniformly, becoming minimum at 0ºC (b) It density increases uniformly, attaining maximum value at 0ºC (c) Its volume decreases up to 4ºC and then increases (d) Its density decreases up to 4ºC and then increases |
| 4 | During summer, we feel comfortable under a fan because it –
(a) throws cool air on us (b) sets the air in motion, thereby increasing the evaporation of sweat (c) Produces convection currents (d) Produces air which carries heat away from the body |
| 5 | Light waves are different from sound waves in that –
(a) light waves are electromagnetic but sound waves are not (b) light waves can travel through water but sound waves cannot (c) light travels with the same speed in all media (d) light waves produce interference but sound waves do not |
| 6 | Plants are
(a) luminous bodies which twinkle (b) non-luminous bodies which twinkle (c) luminous bodies which don’t twinkle (d) non-luminous bodies which don’t twinkle |
| 7 | If you move towards a mirror at the speed of 10cm/sec, then your image will approach you at the speed of
(a) 5 cm/sec (b) 10 cm/sec (c) 20 cm/sec (d) Data inadequate |
| 8 | In outer space a spaceman
(a) cannot see stars during day time (b) cannot see stars at all (c) can see stars during day-time opposite sun (d) can see stars during day time in all directions |
| 9 | The soap bubbles look coloured when viewed in white light due to –
(a) scattering of light by thin layer (b) interference of light by thin layer (c) transmission of light (d) characteristics of the colours of soap – solution |
| 10 | Which of the following devices changes the electrical energy into mechanical energy?
(a) Dynamo (b) Electric Motor (c) Inductor (d) Rectifier |
| 11 | The function of a moderator in a nuclear reactor is to –
(a) moderate the number of secondary neutrons (b) moderate the velocity of secondary neutrons (c) increase the number of fissionable nuclei (d) control the fission reaction |
| 12 | Which planets do not have satellites revolving around them ?
(a) Mars and Venus (b) Mercury and Venus (c) Mars and Mercury (d) Neptune and Pluto |
| 13 | The absolute zero of temperature is –
(a) the starting point of any scale of temperature (b) the lowest temperature that is theoretically possible (c) the temperature at which the vapors of all liquid substances freeze (d) the temperature at which all substances exists in the vapor phase |
| 14 | Heavy water –
(a) contains more dissolved air (b) contains more dissolved minerals and salts (c) contains deuterium in place of hydrogen (d) contains organic impurities |
| 15 | Animal charcoal is obtained by –
(a) the destructive distillation of bones (b) burning the bones of animals in contact with air (c) burning the flesh of animals (d) burning the bones of animals out of contact with air |
| 16 | Polythene is industrially prepared by the polymerization of –
(a) Methane (b) Acetylene (c) Ethylene (d) Ethane |
| 17 | ‘Fixation of nitrogen’ implies –
(a) the liquefaction of nitrogen (b) the conversion of atmospheric nitrogen into useful compounds (c) the conversion of nitrogen into amines (d) the solidification of nitrogen gas of the atmosphere |
| 18 | Oxidation is a process which involves –
(a) the loss of electrons (b) the gain of hydrogen (c) the gain of electrons (d) no change in electrons
|
| 19 | The bleaching agent of the colour of the clothes is –
(a) Sodium Chloride (b) Sulphur dioxide (c) Carbon dioxide (d) Sulphur trioxide |
| 20 | Emerald is formed of –
(a) Berilium (b) Chromium (c) Aluminium (d) Magnesium |
Answers –
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| A | B | C | B | A | D | C | C | B | C |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| B | B | B | C | A | C | B | B | B | B |
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