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