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