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