Science General Knowledge Questions and Answers

49.What is a Voltmeter used for in a circuit ?

a)measuring Electrical Potential difference

b)Measuring Electric Reistance

c)measuring Electric intensity

d)measuring Electro motive force

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Ans:A

50.Infrasonic Sound frequency is less than ______ Hz ?

a)10,000

b)19000

c)20

d)1000

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Ans:C

51._____ is the unit of Capacitance ?

a)Weber

b)Farad

c)Tesla

d)Ampere

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Ans:B

52.SI unit for Luminous flux is ?

a)Lumen

b)Ohm

c)Coulomb

d)Candela

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Ans:A

53.Henry is the unit of ______ ?

a)Capacitance

b)Resistance

c)Inducatance

d)Magnetic Flux

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Ans:C

54.Caloriemeter is used to measure _____ ?

a)Temperature

b)heat

c)Electric Resistance

d)Force

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Ans:B

55.Specific Gravity of liquids are measured by _____ instrument ?

a)Hydrometer

b)Galvanometer

c)Chronometer

d)Radar

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Ans:A