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