MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Increased wind speed is accompanied by a reduced air ________ |
| A. | umidity |
| B. | ressure |
| C. | ensity |
| D. | ridity |
| Answer» C. ensity | |
| 2. |
A storm is predicted if atmospheric pressure |
| A. | ises suddenly |
| B. | ises gradually |
| C. | alls suddenly |
| D. | alls gradually |
| Answer» D. alls gradually | |
| 3. |
When the barometer reading dips suddenly, it is an indication of |
| A. | ot weather |
| B. | alm weather |
| C. | torm |
| D. | ry weather |
| Answer» D. ry weather | |
| 4. |
Hydraulic brakes in automobile work on |
| A. | oiseuille's principle |
| B. | ascal's principle |
| C. | rchimedes' principle |
| D. | ernoulli's principle |
| Answer» C. rchimedes' principle | |
| 5. |
The sudden fall of atmospheric pressure indicates |
| A. | air weather |
| B. | torm |
| C. | ain |
| D. | old weather |
| Answer» C. ain | |
| 6. |
The instrument used to measure the speed of the wind is |
| A. | ltimeter |
| B. | nemometer |
| C. | hronometer |
| D. | osimeter |
| Answer» C. hronometer | |
| 7. |
Anemometer is used to measure |
| A. | ind direction |
| B. | ind velocity |
| C. | ressure gradient |
| D. | ind speed and time |
| Answer» C. ressure gradient | |
| 8. |
Alcohol is more volatile than water because ________ is lower than water. |
| A. | ts boiling point |
| B. | ts density |
| C. | ts viscosity |
| D. | ts surface tension |
| Answer» B. ts density | |
| 9. |
Hydraulic machines work under the Principle of : |
| A. | ewton's Law |
| B. | oules Law |
| C. | ascal's Law |
| D. | loatation Law |
| Answer» D. loatation Law | |
| 10. |
A barometer is kept inside a bell jar. Air is slowly pumped out of the jar. |
| A. | he mercury level starts rising |
| B. | he mercury level starts falling |
| C. | he mercury level does not change |
| D. | he bell jar breaks up |
| Answer» B. he mercury level starts falling | |
| 11. |
A fountain pen works on the principle of |
| A. | low of liquids from higher to lower potential |
| B. | apillary action |
| C. | ernoulli's principle |
| D. | iscosity of liquids |
| Answer» C. ernoulli's principle | |
| 12. |
Anemometer is an instrument meant for measuring ________ |
| A. | elocity |
| B. | ir masses |
| C. | ind speed |
| D. | emperature |
| Answer» D. emperature | |
| 13. |
Speed of sound in air is unaffected by change in |
| A. | ressure |
| B. | umidity |
| C. | emperature |
| D. | olume |
| Answer» B. umidity | |
| 14. |
Velocity of sound in air does not depend on |
| A. | ensity of air |
| B. | emperature of air |
| C. | ressure of air |
| D. | umidity of air |
| Answer» D. umidity of air | |
| 15. |
A wavelength of 0.3 m is produced in air and it travels at a speed of 300 m/s. Then it will be an |
| A. | udible wave |
| B. | nfrasonic wave |
| C. | ltrasonic wave |
| D. | icrowave |
| Answer» B. nfrasonic wave | |
| 16. |
Bats can sense obstacles because they produce |
| A. | upersonic sound waves |
| B. | ltrasonic sound waves |
| C. | nfrasonic sound waves |
| D. | icro sound waves |
| Answer» C. nfrasonic sound waves | |
| 17. |
Sound is heard over longer distances on rainy days because |
| A. | ound travels slowly in moist air |
| B. | ound travels faster in moist air |
| C. | oist air does not absorb sound |
| D. | oist air absorbs sound |
| Answer» C. oist air does not absorb sound | |
| 18. |
The sound produced by a bat is– |
| A. | udible |
| B. | ubsonic |
| C. | nfrasonic |
| D. | ltrasonic |
| Answer» E. | |
| 19. |
A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is |
| A. | he same in both cases in all respects |
| B. | f higher intensity when train arrives |
| C. | f higher pitch when train arrives |
| D. | f higher pitch when train departs |
| Answer» D. f higher pitch when train departs | |
| 20. |
The velocity of sound is more in |
| A. | ater |
| B. | ir |
| C. | teel |
| D. | ood |
| Answer» D. ood | |
| 21. |
The instrument which uses sound waves to measure the depth of oceans is |
| A. | adar |
| B. | onar |
| C. | ltimeter |
| D. | enturimeter |
| Answer» C. ltimeter | |
| 22. |
Which one of the following animals can hear ultrasonic sound ? |
| A. | at |
| B. | quirrel |
| C. | at |
| D. | at |
| Answer» E. | |
| 23. |
Loudness of sound depends on |
| A. | requency |
| B. | avelength |
| C. | mplitude |
| D. | itch |
| Answer» D. itch | |
| 24. |
Submerged objects can be located using |
| A. | adar |
| B. | onar |
| C. | uasar |
| D. | ulsar |
| Answer» C. uasar | |
| 25. |
Permissible noise level at Residential area during night time is : |
| A. | 5 dB (A) |
| B. | 5 dB (A) |
| C. | 5 dB (A) |
| D. | 0 dB (A) |
| Answer» B. 5 dB (A) | |
| 26. |
Propagation of sound can be visualised as propagation of ________ variations in the medium |
| A. | lasticity |
| B. | iscosity |
| C. | ensity |
| D. | orosity |
| Answer» D. orosity | |
| 27. |
Which of the following instruments is used to measure humidity ? |
| A. | ata Thermometer |
| B. | nemometer |
| C. | ling Psychrometer |
| D. | linical Thermometer |
| Answer» D. linical Thermometer | |
| 28. |
Why does bleeding occur through the nose in high mountainous regions ? |
| A. | he pressure of blood in capillaries is greater than the outside pressure |
| B. | he pressure at high altitudes is greater than that on the plains |
| C. | he blood pressure of a person increases at high altitudes |
| D. | he blood pressure fluctuates and finally decreases drastically |
| Answer» D. he blood pressure fluctuates and finally decreases drastically | |
| 29. |
A parachute descends slowly whereas a stone dropped from the same height falls rapidly, because |
| A. | tone is heavier than parachute |
| B. | pecial mechanisms are present in parachute |
| C. | parachute has a larger surface area and air resistance is more |
| D. | one of these |
| Answer» D. one of these | |
| 30. |
The atmospheric air is held to the Earth by : |
| A. | ravity |
| B. | inds |
| C. | louds |
| D. | otation of the Earth |
| Answer» B. inds | |
| 31. |
The motion of a freely falling body is an example of ________ motion. |
| A. | niformly accelerated |
| B. | on-uniformly accelerated |
| C. | onstant velocity |
| D. | onstant speed |
| Answer» B. on-uniformly accelerated | |
| 32. |
During uniform motion of an object along a straight line, its ________ remains constant with time. |
| A. | cceleration |
| B. | eceleration |
| C. | orce |
| D. | elocity |
| Answer» E. | |
| 33. |
The motion of a body that repeats itself after a regular interval of time is |
| A. | periodic motion |
| B. | simple harmonic motion |
| C. | n aperiodic motion |
| D. | n oscillatory motion |
| Answer» B. simple harmonic motion | |
| 34. |
Which of the following pairs of physical quantities have the same dimensions? |
| A. | orce and Power |
| B. | ork and Power |
| C. | ork and Energy |
| D. | omentum and Power |
| Answer» D. omentum and Power | |
| 35. |
If the length of a simple pendulum is halved then its period of oscillation is |
| A. | oubled |
| B. | alved |
| C. | ncreased by a factor 2 |
| D. | ecreased by a factor 2 |
| Answer» E. | |
| 36. |
Which one of the following is the value of one nanometer? |
| A. | 0-7 cm |
| B. | 0-6 cm |
| C. | 0-4 cm |
| D. | 0-3 cm |
| Answer» B. 0-6 cm | |
| 37. |
The time period of a seconds pendulum is |
| A. | second |
| B. | seconds |
| C. | .5 second |
| D. | .5 second |
| Answer» C. .5 second | |
| 38. |
A light year is a measure of : |
| A. | peed |
| B. | elocity |
| C. | istance |
| D. | ime |
| Answer» D. ime | |
| 39. |
One nanometer is equal to ________ meters. |
| A. | 0 raised to the power (-3) |
| B. | 0 raised to the power (-6) |
| C. | 0 raised to the power (-9) |
| D. | 0 raised to the power (-12) |
| Answer» D. 0 raised to the power (-12) | |
| 40. |
Parsec is the unit of |
| A. | istance |
| B. | ime |
| C. | ntensity of light |
| D. | agnetic line |
| Answer» B. ime | |
| 41. |
1 m/s equals ________ km/hr |
| A. | /16 |
| B. | 6/5 |
| C. | 8/5 |
| D. | /18 |
| Answer» D. /18 | |
| 42. |
Which among the following is the fundamental quantity ? |
| A. | olume |
| B. | ime |
| C. | elocity |
| D. | orce |
| Answer» C. elocity | |
| 43. |
Magnetic keepers are used to protect magnets from : |
| A. | arth's magnetic field |
| B. | ffect of other magnets |
| C. | elf-demagnetization |
| D. | emagnetization due to heating |
| Answer» D. emagnetization due to heating | |
| 44. |
When a bar magnet is cut into two equal halves, the pole strength of each piece – |
| A. | ecomes double |
| B. | ecomes half |
| C. | ecomes zero |
| D. | emains the same |
| Answer» E. | |
| 45. |
If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will |
| A. | all in front of him |
| B. | all behind him |
| C. | all into his hand |
| D. | one of the above |
| Answer» D. one of the above | |
| 46. |
What is the force of attraction between any two bodies by virtue of their masses is called? |
| A. | lectromagnetic Force |
| B. | ravitational Force |
| C. | entripetal Force |
| D. | uclear Force |
| Answer» C. entripetal Force | |
| 47. |
Two stones of different masses are dropped simultaneously from the top of a building |
| A. | maller stone reaches the ground earlier |
| B. | arger stone reaches the ground earlier |
| C. | oth the stones reach the ground at the same time |
| D. | epends on the composition of the stone |
| Answer» D. epends on the composition of the stone | |
| 48. |
While catching a ball, a player pulls down his hands to lower the– |
| A. | orce |
| B. | omentum |
| C. | mpulse |
| D. | atching time |
| Answer» C. mpulse | |
| 49. |
A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls |
| A. | ehind him |
| B. | n front of him |
| C. | nto his hand |
| D. | y his side |
| Answer» B. n front of him | |
| 50. |
A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that |
| A. | he rubber ball suffers greater change in momentum |
| B. | he metal ball suffers greater change in momentum |
| C. | oth suffer the same change in momentum |
| D. | he initial momentum of the rubber ball is greater than that of the metal ball |
| Answer» B. he metal ball suffers greater change in momentum | |