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