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