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