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