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