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