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