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