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