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