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