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
Congratulations….
You have secured more than 70% to pass the test.
#1. Which colour is a good absorber?
#2. The example of bad conductor is:
#3. The thermal conductivity of dry air is _____ W/mK.
#4. Global warming is due to a gas:
#5. Convection of heat is the process of heat transfer due to the:
#6. Land breeze blows from
#7. The surfaces of Leslie’s cube are:
#8. The glider remains in air due to:
#9. The thermal conductivity of dry air is _____ W/mK.
#10. Poor conductor of heat is:
#11. Radiation is the mode of transfer of heat from one place to another in the form of waves called:
#12. Rate of flow of heat through conductor is inversely proportional to its:
#13. Which of the following is a good radiator of heat?
#14. _____ is a good radiator of heat.
#15. Unit of rate of thermal energy is:
#16. Thermal conductivity of ice is:
#17. Land breeze and sea breeze are the result of:
#18. Which of the following birds are expert thermal climbers?
#19. Rooms are heated using gas heaters by:
#20. Thermal conductivity of water is:
#21. The thermal conductivity of copper in watt per meter per kelvin is:
#22. In gases, heat is transferred by:
#23. Metals are good good conductors of heat due to:
#24. The unit of rate of conduction of thermal energy is:
#25. The rate of flow of heat is:
#26. In liquids, heat is mainly transferred by:
#27. False ceiling is done to:
#28. Thermal conductivity of brick is:
#29. Worst absorber of heat is:
#30. What happens to the thermal conductivity of a wall if its thickness is doubled?
#31. In solids, heat is transferred by:
#32. Which surface is bad emitter?
#33. The unit of thermal conductivity is:
#34. Warms clothes for winter season are:
