Al-Huda Science Academy has designed Physics Chapter 9 Class 9 MCQs for board preparation. Most of the questions are from the previous board papers. These are helping material for all type of students. Must share to your fellows if helpful.
Time allocated to each question is 20 seconds.
Physics Chapter 9 Class 9 MCQs
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#1. The example of bad conductor is:
#2. Poor conductor of heat is:
#3. Unit of rate of thermal energy is:
#4. Rooms are heated using gas heaters by:
#5. The glider remains in air due to:
#6. Land breeze and sea breeze are the result of:
#7. Which of the following is a good radiator of heat?
#8. Thermal conductivity of ice is:
#9. Which colour is a good absorber?
#10. The thermal conductivity of copper in watt per meter per kelvin is:
#11. The surfaces of Leslie’s cube are:
#12. The unit of rate of conduction of thermal energy is:
#13. In solids, heat is transferred by:
#14. Metals are good good conductors of heat due to:
#15. Convection of heat is the process of heat transfer due to the:
#16. What happens to the thermal conductivity of a wall if its thickness is doubled?
#17. Land breeze blows from
#18. The thermal conductivity of dry air is _____ W/mK.
#19. In gases, heat is transferred by:
#20. Worst absorber of heat is:
#21. Thermal conductivity of water is:
#22. _____ is a good radiator of heat.
#23. False ceiling is done to:
#24. Which of the following birds are expert thermal climbers?
#25. In liquids, heat is mainly transferred by:
#26. The thermal conductivity of dry air is _____ W/mK.
#27. Thermal conductivity of brick is:
#28. Warms clothes for winter season are:
#29. The rate of flow of heat is:
#30. Which surface is bad emitter?
#31. Radiation is the mode of transfer of heat from one place to another in the form of waves called:
#32. Rate of flow of heat through conductor is inversely proportional to its:
#33. The unit of thermal conductivity is:
#34. Global warming is due to a gas:
