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