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