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