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