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