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