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