👉 Chapter 9 – Nature of Science (MCQ’s and Short Questions)
Long QuestionsTransfer of Heat – MCQ’s
- Ice is an:
(a) Good conductor
(b) Bad conductor ✓
(c) Perfect Conductor
(d) None
- There are ————- methods of transmission of heat:
(a) 1
(b) 2
(c) 3 ✓
(d) 4
- Which of the following is best for insulation?
(a) Glass
(b) Air ✓
(c) Brass
(d) Fiber glass
- Transmission of heat from one body to another body by the interaction of atoms and electrons:
(a) Conduction ✓
(b) Convection
(c) Radiation
(d) All of above
- Transfer of heat by the actual movement of molecules:
(a) Conduction
(b) Convection ✓
(c) Radiation
(d) All of above
- Geysers work on the principle of:
(a) Conduction
(b) Convection ✓
(c) Radiation
(d) All of above
- Transmission of heat by waves without affecting medium on its way:
(a) Conduction
(b) Convection
(c) Radiation ✓
(d) All of above
- Ventilation in our houses is only possible due to:
(a) Conduction
(b) Convection ✓
(c) Radiation
(d) All of above
- Heat from sun reaches us by:
(a) Conduction
(b) Convection
(c) Radiation ✓
(d) All of above
- Water is a:
(a) Good conductor
(b) Poor conductor
(c) Super conductor ✓
(d) Insulator
- Feathers of the birds are:
(a) Conductor
(b) Semiconductor ✓
(c) Insulators
(d) None of them
- Land and sea breezes are due to:
(a) Conduction
(b) Convection ✓
(c) Radiation
(d) All of them
- Global warming in the world is due to:
(a) Greenhouse effect ✓
(b) Land and sea breezes
(c) Radiation
(d) None of them
- Black surfaces are ————- emitter:
(a) Best ✓
(b) Good
(c) Worst
(d) Poor
- Shinning silvered surfaces are ———– reflector:
(a) Best ✓
(b) Good
(c) Worst
(d) Poor
- Coloured surfaces are ————- absorber
(a) Best
(b) Good ✓
(c) Worst
(d) Poor
- The gases in the Earth’s atmosphere, which causes the greenhouse effect:
(a) Carbon dioxide
(b) Water vapors
(c) Both a & b ✓
(d) None of them
- Which one is (are) the insulator (s)?
(a) Cork
(b) Cotton
(c) Rubber
(d) All of them ✓
- Movement of water on heating is shown by the crystal of:
(a) Sodium chloride
(b) Potassium permanganate ✓
(c) Calcium carbonate
(d) None of them