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