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