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