General Science QUESTIONS AND ANSWERS

General Knowledge : General Science QUESTIONS AND ANSWERS :: part25 : 36 to 40

Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :

36.Lightning is formed when :

similar charges of electricity rush towards each other and then get repelled

clouds strike against impurities in air and the friction burns up these impurities

strong opposite charges in different clouds break down the resistance offered by the intervening air .

water vapour produces electricity in the clouds.

37.Remote Sensing Satellites are called Polar Satellites because :

they orbit the earth along the poles or from pole to pole

they are fixed at a particular point.

the axis of satellite is always pointed towards the pole

none of the above

38.A remote control gadget has in it :

a small electromagnet, that emits electromagnetic waves

a small oscillator that emits electric pulses

a small transitter that emits infrared signals

none of these

39.Ball bearings are used to reduce friction by :

applying lubricants to the balls used

reducing the area of cntact with the use of metallic balls

increasing the area of contact with the use of metallic balls

none of these

More General Science QUESTIONS AND ANSWERS available in next pages

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