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