General Science QUESTIONS AND ANSWERS

General Knowledge : General Science QUESTIONS AND ANSWERS :: part13 : 21 to 25

Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2024 examinations :

21.An ice cube is floating in a glass be affected when the ice cube melts ?

It will rise.

It will go down.

It will remain unchanged.

It would first go up but later on it will go down.

22.Thermos flask keeps a liquid hot because

it has double walls.

it has silver coated walls.

air between the double walls is removed

heat losses by conduction and radiation are largely prevented.

23.Without burning paper, water can be boiled in a paper cup because

water is a good conductor of heat with high specific heat.

paper is a bad conductor of heat

ignition temperature of paper is more than boiling point of water.

heat capacity of paper is less than that of water.

24.A glass rod placed in a colourless liquid seems to disappear when the

liquid wets the flas by capillarity.

glass and the liquid have the same refractive index.

liquid and the glass have the same colour.

glass and the liquid are of the same density.

25.The speed of light will be minimum while passing through

glass

air

water

vacuum

More General Science QUESTIONS AND ANSWERS available in next pages

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