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MCQOPTIONS
This section includes 6820 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 2651. |
We see the flash of lightning first and the thunder of the clouds later, because . . . . |
| A. | Ears are less sensitive than eyes |
| B. | eyes immediately |
| C. | sound travels at low speed in moist air |
| D. | light travels faster than sound |
| Answer» E. | |
| 2652. |
By which Newton's law can the weight of a body be determined? |
| A. | first law of motion |
| B. | second law of motion |
| C. | third law of motion |
| D. | law of gravity |
| Answer» E. | |
| 2653. |
Who was the exponent of the law of motion? |
| A. | Aristotle |
| B. | newton |
| C. | J. b. Nash |
| D. | galileo |
| Answer» C. J. b. Nash | |
| 2654. |
What is the cooling by desert cooler based on? |
| A. | high air replacement |
| B. | air dehydration |
| C. | evaporative cooling |
| D. | air rehydration |
| Answer» D. air rehydration | |
| 2655. |
Food gets cooked quickly in pressure cooker because. . . . . . . |
| A. | pressure increases as steam accumulates |
| B. | pressure cooker water is helpful in cooking |
| C. | Steam is not wasted in pressure cooker |
| D. | pressure cooker is heavy |
| Answer» B. pressure cooker water is helpful in cooking | |
| 2656. |
Newton's second law is? |
| A. | law of action and reaction |
| B. | law of inertia |
| C. | law of acceleration |
| D. | distance and direction law |
| Answer» D. distance and direction law | |
| 2657. |
What is the SI unit of heat? |
| A. | Wait |
| B. | Ampere |
| C. | joule |
| D. | newton |
| Answer» D. newton | |
| 2658. |
What is the most important property of nanomaterials? |
| A. | force |
| B. | friction |
| C. | pressure |
| D. | Temperature |
| Answer» C. pressure | |
| 2659. |
In Doordarshan broadcasting, the transmission of picture messages takes place in? |
| A. | by amplitude modulation |
| B. | by frequency modulation |
| C. | by art modulation |
| D. | By angle modulation |
| Answer» B. by frequency modulation | |
| 2660. |
The temperature of an object on the Fahrenheit scale is 212°F. What will be the temperature of that object on the Celsius scale? |
| A. | - 32℃ |
| B. | 40℃ |
| C. | 100℃ |
| D. | 112℃ |
| Answer» D. 112℃ | |
| 2661. |
What is the function of thermostat in refrigerator? |
| A. | reduce the temperature |
| B. | increase the freezing temperature |
| C. | maintain the same temperature |
| D. | decrease melting point |
| Answer» D. decrease melting point | |
| 2662. |
Hygrometer is used to measure what? |
| A. | relative density of matter |
| B. | milk purity |
| C. | atmospheric humidity |
| D. | sea depth |
| Answer» D. sea depth | |
| 2663. |
Which equipment is used by doctors? |
| A. | stroboscope |
| B. | stethoscope |
| C. | photometer |
| D. | thermoscope |
| Answer» C. photometer | |
| 2664. |
Cryogenic engines are used for? |
| A. | in submarine propulsion |
| B. | in frost free refrigerators |
| C. | in rocket technology |
| D. | in superconductivity research |
| Answer» D. in superconductivity research | |
| 2665. |
What is the instrument used to measure the intensity of sound? |
| A. | chronometer |
| B. | anemometer |
| C. | audiophone |
| D. | audiometer |
| Answer» E. | |
| 2666. |
What is thereactor scaleused for? |
| A. | measuring air pressure |
| B. | measure the humidity of the weather |
| C. | measuring earthquakes |
| D. | measuring the speed of light |
| Answer» D. measuring the speed of light | |
| 2667. |
Which instrument is used to measure the angular distance between two objects? |
| A. | Sexcent |
| B. | Telstar |
| C. | spheropitor |
| D. | refractometer |
| Answer» B. Telstar | |
| 2668. |
Bolometer is an instrument which measures? |
| A. | thermal conductivity |
| B. | thermal radiation |
| C. | sound intensity |
| D. | specific heat |
| Answer» C. sound intensity | |
| 2669. |
The instrument used to measure relative humidity in air is? |
| A. | hygrograph |
| B. | hydrograph |
| C. | Pantograph |
| D. | barograph |
| Answer» B. hydrograph | |
| 2670. |
What is the instrument that measures the intensity of the sun's rays called? |
| A. | astrometer |
| B. | crescograph |
| C. | actinometer |
| D. | barometer |
| Answer» D. barometer | |
| 2671. |
A thermometer which is suitable for measuring 2000℃ is? |
| A. | gas thermometer |
| B. | mercury thermometer |
| C. | absolute radiation pyrometer |
| D. | vapor pressure thermometer |
| Answer» D. vapor pressure thermometer | |
| 2672. |
Inventor of scooter? |
| A. | Broad Shaw |
| B. | Daimler |
| C. | einstein |
| D. | farmich |
| Answer» B. Daimler | |
| 2673. |
Seismograph. . . . . . . . Useful for detection? |
| A. | Volcano |
| B. | Earthquake |
| C. | tidal waves |
| D. | landslide |
| Answer» C. tidal waves | |
| 2674. |
How is the rotation per second of a flying wheel measured? |
| A. | barometer |
| B. | anemometer |
| C. | hygrometer |
| D. | stroboscope |
| Answer» E. | |
| 2675. |
Do you use a pyrometer? |
| A. | measuring depth |
| B. | in measuring humidity |
| C. | in measuring temperature |
| D. | measuring height |
| Answer» D. measuring height | |
| 2676. |
What is measured by Wheatstone Bridge? |
| A. | electric current |
| B. | Potential difference |
| C. | Resistance |
| D. | potential |
| Answer» D. potential | |
| 2677. |
What can be known about the flying aircraft by the microwave installed in the radar? |
| A. | direction |
| B. | Distance |
| C. | Texture |
| D. | All of the above |
| Answer» E. | |
| 2678. |
What is measured by manometer? |
| A. | Air pressure |
| B. | gas pressure |
| C. | density of liquids |
| D. | surface oil pressure |
| Answer» C. density of liquids | |
| 2679. |
What is the unit of measurement of distance between stars? |
| A. | steeler miles |
| B. | cosmic km |
| C. | galactic unit |
| D. | light year |
| Answer» E. | |
| 2680. |
What measures the purity of milk? |
| A. | hydrometer |
| B. | manometer |
| C. | Fedometer |
| D. | lactometer |
| Answer» E. | |
| 2681. |
Pyrometer is used to measure? |
| A. | Air pressure |
| B. | humidity |
| C. | high temperature |
| D. | earthquake intensity |
| Answer» D. earthquake intensity | |
| 2682. |
What is the original pressure measured by? |
| A. | barometer |
| B. | atmometer |
| C. | manometer |
| D. | Oxenometer |
| Answer» E. | |
| 2683. |
One parsec, the unit for measuring distances in stars, is equal to? |
| A. | 25 light years |
| B. | 25 light years |
| C. | 50 light years |
| D. | 85 light years |
| Answer» C. 50 light years | |
| 2684. |
Which instrument is used to measure atmospheric pressure? |
| A. | hygrometer |
| B. | altimeter |
| C. | hydrometer |
| D. | barometer |
| Answer» E. | |
| 2685. |
The instrument that measures the depth of the ocean is called? |
| A. | hydrometer |
| B. | manometer |
| C. | altimeter |
| D. | Fadometer |
| Answer» E. | |
| 2686. |
What is the gas in an electric bulb? |
| A. | Wind |
| B. | oxygen |
| C. | nitrogen |
| D. | No one |
| Answer» D. No one | |
| 2687. |
What is the dimensional formula for Surface Tension? |
| A. | M¹L¹T¹ |
| B. | M⁰L¹T² |
| C. | M²L¹T⁰ |
| D. | M¹L⁰T‾² |
| Answer» E. | |
| 2688. |
Velocity (tachometer) is used to measure |
| A. | gravity |
| B. | rotational speed |
| C. | surface tension |
| D. | dispersion power |
| Answer» C. surface tension | |
| 2689. |
A 200 volt voltage generator is connected to a 40 watt bulb. What will be the value of current flowing in the bulb? |
| A. | 2 amperes |
| B. | 5 amps |
| C. | 0 . 2 amperes |
| D. | 0 . 5 amps |
| Answer» D. 0 . 5 amps | |
| 2690. |
The energy equivalent to 1 AMU is? |
| A. | 1 Ev |
| B. | 14 . 2 Mev |
| C. | 931 MeV |
| D. | 0 . 693 MeV |
| Answer» D. 0 . 693 MeV | |
| 2691. |
1 kg/cm pressure is equal to? |
| A. | 0 . of 1 time |
| B. | 0 times |
| C. | 10. 0 times |
| D. | 100. 0 times |
| Answer» B. 0 times | |
| 2692. |
Vector is not a sum? |
| A. | Acceleration |
| B. | Velocity |
| C. | Momentum |
| D. | Density |
| Answer» E. | |
| 2693. |
What is the cause of clouds floating in the atmosphere? |
| A. | heat |
| B. | Speed |
| C. | pressure |
| D. | density |
| Answer» E. | |
| 2694. |
Skating on ice shows that the melting point of ice increases with increasing pressure. . . |
| A. | rises up |
| B. | happens to |
| C. | remains unchanged |
| D. | first decreases then increases |
| Answer» C. remains unchanged | |
| 2695. |
If we move from the equator to the poles, then the value of g? |
| A. | grows |
| B. | decreases |
| C. | remains the same |
| D. | Decreases up to 45° latitude |
| Answer» B. decreases | |
| 2696. |
Which of the following is not a quantity vector? |
| A. | Newton's |
| B. | Speed |
| C. | force |
| D. | volume |
| Answer» E. | |
| 2697. |
body will remain at rest as long as there is no external force acting on it.Whose statement is this ? |
| A. | Newton's |
| B. | Einstein's |
| C. | Archimedes' |
| D. | Galilean |
| Answer» B. Einstein's | |
| 2698. |
Candela is a unit? |
| A. | flame flux |
| B. | light effect |
| C. | light pressure |
| D. | light intensity |
| Answer» E. | |
| 2699. |
The name of whose unit is Curie? |
| A. | radioactive purity |
| B. | Temperature |
| C. | heat |
| D. | energy |
| Answer» B. Temperature | |
| 2700. |
What is the unit of electric current? |
| A. | Ampere |
| B. | Om |
| C. | Voltage |
| D. | coulomb |
| Answer» B. Om | |