MCQOPTIONS
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MCQOPTIONS
This section includes 1292 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 701. |
Choose the most appropriate answer:Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation? |
| A. | Scattering |
| B. | Diffraction |
| C. | Interference |
| D. | Polarization |
| Answer» B. Diffraction | |
| 702. |
Choose the most appropriate answer:In which atmospheric layer are the communication satellites located? |
| A. | Stratosphere |
| B. | Ionosphere |
| C. | Troposphere |
| D. | Mesosphere |
| Answer» C. Troposphere | |
| 703. |
Change in focal length of eye lens is caused by |
| A. | ciliary muscles |
| B. | iris |
| C. | pupil |
| D. | retina |
| Answer» B. iris | |
| 704. |
Choose the most appropriate answer:Natural radioactivity was discovered by |
| A. | Marie Curie |
| B. | Earnest Rutherford |
| C. | Henry Bacquerel |
| D. | Enrico Fermi |
| Answer» D. Enrico Fermi | |
| 705. |
Centrifugal force increases with |
| A. | Temperature |
| B. | Pressure |
| C. | Acceleration |
| D. | Humidity |
| Answer» D. Humidity | |
| 706. |
Cast iron during machining produces |
| A. | Discontinuous chips |
| B. | Continuous chips with build up edge |
| C. | Continuous chips |
| D. | All of the above |
| Answer» B. Continuous chips with build up edge | |
| 707. |
Carbon Arc lamps are commonly used in |
| A. | cinema projectors |
| B. | photography |
| C. | vehicles |
| D. | domestic lighting |
| Answer» B. photography | |
| 708. |
Calculate the work done by the force of gravity when a satellite moves in an orbit of radius 40,000 km around the earth. |
| A. | 8,000 J |
| B. | 4,00,000 J |
| C. | 0 J |
| D. | 4,000 J |
| Answer» D. 4,000 J | |
| 709. |
Calculate the time period (in seconds) of a sound wave of wavelength 5m travelling with a speed of 500 m/s._x005F_x000D_ |
| A. | 0.01 |
| B. | 2500 |
| C. | 0.02 |
| D. | 1250 |
| Answer» B. 2500 | |
| 710. |
Calculate the pressure (in Pa) if a thrust of 750 N is applied to an area of 5 m2._x005F_x000D_ |
| A. | 37.5_x005F_x000D_ |
| B. | 150_x005F_x000D_ |
| C. | 75_x005F_x000D_ |
| D. | 100 |
| Answer» C. 75_x005F_x000D_ | |
| 711. |
Calculate the time period (in seconds) of a sound wave of wavelength 4m traveling with a speed of 500m/s |
| A. | 2000 |
| B. | 0.016 |
| C. | 1000 |
| D. | 0.008 |
| Answer» E. | |
| 712. |
Calculate the time period (in seconds) of a sound wave of wavelength 3 m travelling with a speed of 300 m/s._x005F_x000D_ |
| A. | 900 |
| B. | 0.02 |
| C. | 450 |
| D. | 0.01 |
| Answer» E. | |
| 713. |
Calculate the time period (in seconds) of a sound wave of wavelength 2m travelling with a speed of 250 m/s. |
| A. | 500 |
| B. | 0.008 |
| C. | 0.016 |
| D. | 250 |
| Answer» C. 0.016 | |
| 714. |
Calculate the pressure (in Pa) if a thrust of 800 N is applied to an area of 16 m2. |
| A. | 128 |
| B. | 100 |
| C. | 64 |
| D. | 50 |
| Answer» E. | |
| 715. |
Calculate the power (in W) of an engine if it can perform 120 J of work in 3 seconds._x005F_x000D_ |
| A. | 360 |
| B. | 80 |
| C. | 180 |
| D. | 40 |
| Answer» E. | |
| 716. |
Calculate the frequency (in Hz) of a sound wave of wavelength 4m travelling with a speed of 200 m/s. |
| A. | 50 |
| B. | 800 |
| C. | 100 |
| D. | 400 |
| Answer» B. 800 | |
| 717. |
Calculate the pressure (in Pa) if a thrust of 1000 N is applied to an area of 5 sq.m._x005F_x000D_ |
| A. | 200 |
| B. | 50 |
| C. | 100 |
| D. | 25 |
| Answer» B. 50 | |
| 718. |
Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s. |
| A. | 1800 |
| B. | 36 |
| C. | 900 |
| D. | 72 |
| Answer» E. | |
| 719. |
Calculate the pressure (in Pa) if a thrust of 600 N is applied to an area of 24 sq.m. |
| A. | 144 |
| B. | 50 |
| C. | 25 |
| D. | 72 |
| Answer» D. 72 | |
| 720. |
Calculate the current flowing through a resistor of 10 ohm when a potential difference of 140 v is applied across it. |
| A. | 14 amp |
| B. | 140 amp |
| C. | 1400 amp |
| D. | 1.4 amp |
| Answer» B. 140 amp | |
| 721. |
Brightness of bulb depends on voltage or current? |
| A. | Current |
| B. | Voltage |
| C. | Both A & B |
| D. | None |
| Answer» D. None | |
| 722. |
Calculate the current drawn from a generator having a voltage output of 220 V when connected to a motor having a power of 1100 W._x005F_x000D_ |
| A. | 0.20833333333333 |
| B. | 50 A |
| C. | 0.41666666666667 |
| D. | 100 A |
| Answer» B. 50 A | |
| 723. |
Bubbles of air rise up through liquids due to |
| A. | Surface tension and adherence |
| B. | viscosity and buoyancy |
| C. | air current over the liquid and buoyancy |
| D. | Up thrust and surface tension |
| Answer» C. air current over the liquid and buoyancy | |
| 724. |
Buoyancy depends on |
| A. | the mass of the liquid displaced |
| B. | the mass of the body |
| C. | the depth to which the body is immersed |
| D. | the shaped of the body |
| Answer» B. the mass of the body | |
| 725. |
Blood pressure is measured by _______. |
| A. | Barometer |
| B. | Sphygmomanometer |
| C. | Hydrometer |
| D. | Thermometer |
| Answer» C. Hydrometer | |
| 726. |
Borosilicate glass wear is used in microwave oven because |
| A. | It is not brittle |
| B. | It is highly heat resistant |
| C. | It cooks faster than any other vessel |
| D. | It is energy efficient |
| Answer» C. It cooks faster than any other vessel | |
| 727. |
Blocking in experimental design is useful because it |
| A. | keeps the experimenter from knowing which subjects are in the treatment group. |
| B. | prevents response bias from entering into the experiment. |
| C. | gives the quarterback enough time to throw the ball. |
| D. | controls for multiple variables in an experiment. |
| Answer» E. | |
| 728. |
Bending of light rays in denser medium is termed as: |
| A. | Reflection |
| B. | Dispersion |
| C. | Refraction |
| D. | Deflection |
| Answer» D. Deflection | |
| 729. |
Ball bearings are used in cycles, scooters etc to |
| A. | Increase the friction between the wheel and the axle |
| B. | Reduce the friction between the wheel and the axle |
| C. | Reduce the friction between ground and the whee |
| D. | None of the above |
| Answer» C. Reduce the friction between ground and the whee | |
| 730. |
Bandwidth is the |
| A. | a measure of the width of a range of frequencies |
| B. | the rate of data transfer |
| C. | both a & b |
| D. | None of the above |
| Answer» D. None of the above | |
| 731. |
AV= constant, where A= area of cross-section and V= velocity of fluid. This equation is called _____. |
| A. | Equation of discontinuity |
| B. | Equation of continuity |
| C. | Equation of sustenance |
| D. | Equation of parallelism |
| Answer» C. Equation of sustenance | |
| 732. |
Atmospheric pressure exerted on earth is due to |
| A. | gravitational pull |
| B. | rotation of earth |
| C. | revolution of earth |
| D. | uneven heating of earth |
| Answer» B. rotation of earth | |
| 733. |
Atmospheric pressure is measured by __________. |
| A. | Barometer |
| B. | Hexameter |
| C. | Nanometer |
| D. | Glaxometer |
| Answer» B. Hexameter | |
| 734. |
At what temperature do the Fahrenheit and celcius scales give the same reading? |
| A. | 212 degrees |
| B. | 32 degreees |
| C. | -40 degreees |
| D. | 0 degreees |
| Answer» D. 0 degreees | |
| 735. |
At what temperature (in degree celsius), the numerical values on Celsius and Fahrenheit scales become equal? |
| A. | –40 |
| B. | 40 |
| C. | 273 |
| D. | -273 |
| Answer» B. 40 | |
| 736. |
At what temperature (in Fahrenheit) pure water freezes? |
| A. | 32 |
| B. | |
| C. | 48 |
| D. | 37 |
| Answer» B. | |
| 737. |
At the Curie temperature, the ferromagnetic materials get converted into |
| A. | Diamagnetic materials |
| B. | Non-magnetic materials |
| C. | Paramagnetic materials |
| D. | None of the others |
| Answer» D. None of the others | |
| 738. |
At the center of the sun, fusion converts hydrogen into |
| A. | Helium |
| B. | Plutonium |
| C. | Water |
| D. | Carbon |
| Answer» B. Plutonium | |
| 739. |
At boiling point of liquids , its |
| A. | Temperature increases |
| B. | Atmospheric pressure increases |
| C. | Temperature remains constant |
| D. | Vapour pressure decreases |
| Answer» D. Vapour pressure decreases | |
| 740. |
Astronauts inside spaceship feel ___ weight. |
| A. | More |
| B. | Less |
| C. | Zero |
| D. | Depends on G force |
| Answer» D. Depends on G force | |
| 741. |
Astronauts in space communicate with each other by radio links because ........._x005F_x000D_ |
| A. | sound waves can't travel in space |
| B. | sound waves have low frequency |
| C. | sound waves travel slowly in space |
| D. | sound waves travel quickly in space |
| Answer» B. sound waves have low frequency | |
| 742. |
As the object covers unequal distances in equal intervals of time, it is said to be in ____________ motion. |
| A. | uniform |
| B. | linear |
| C. | non-uniform |
| D. | equilibrium |
| Answer» D. equilibrium | |
| 743. |
As per Newton's law of gravitation, the force between two bodies is ________. |
| A. | directly proportional to the product of their masses |
| B. | directly proportional to the distance between them |
| C. | directly proportional to the product of their radius |
| D. | directly proportional to the product of forces |
| Answer» B. directly proportional to the distance between them | |
| 744. |
As an object falls freely its ___________________._x005F_x000D_ |
| A. | kinetic energy gets converted into potential energy |
| B. | potential energy gets converted into kinetic energy |
| C. | momentum gets converted into gravitational force |
| D. | gravitational force gets converted into momentum |
| Answer» C. momentum gets converted into gravitational force | |
| 745. |
As the object covers equal distances in equal intervals of time, it is said to be in ____________ motion. |
| A. | uniform |
| B. | linear |
| C. | translational |
| D. | equilibrium |
| Answer» B. linear | |
| 746. |
Any body kept in a fluid experiences an upward force called _____________._x005F_x000D_ |
| A. | torque |
| B. | moment |
| C. | pressure |
| D. | upthrust |
| Answer» E. | |
| 747. |
As a sailor jumps in the forward direction, the boat moves backwards. This example illustrates Newton's : |
| A. | Second Law of Motion |
| B. | First and Second Law of Motion |
| C. | Third Law of Motion |
| D. | First Law of Motion |
| Answer» D. First Law of Motion | |
| 748. |
Anemometer is an instrument meant for measuring __________ |
| A. | velocity |
| B. | air masses |
| C. | wind speed |
| D. | temperature |
| Answer» D. temperature | |
| 749. |
Analog synthesis refers to a technology based on |
| A. | placing brief digital recordings of live sounds under the control of a synthesizer keyboard. |
| B. | interfacing synthesizer equipment. |
| C. | representing data in terms of measurable physical quantities. |
| D. | representing physical quantities as numbers. |
| Answer» D. representing physical quantities as numbers. | |
| 750. |
An Odometer is an instrument used to measure ____ in automobiles. |
| A. | direction |
| B. | distance |
| C. | odour |
| D. | speed |
| Answer» C. odour | |