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