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