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