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#1. Anything we can see or touch is called _____________________
#2. The percentage of rare gases in the air is______
#3. The reflected sound is called__________________
#4. Which from the list is not a type of wind?
#5. Choose the correct answer
#6. The mixture of Oxygen, Carbon dioxide, Nitrogen ,Rare gases and other gases is called____________________
#7. Rare gases like Argon is useful in________________
#8. The following are the properties of carbon monoxide except
#9. ________________ is the increase of of atmospheric temperature on earth’s surface
#10. ______________ is a work(moisten flour or clay) into dough or paste with hands
#11. Choose the correct property of air .
#12. The growing of seed into seedlings or young plant is commonly known as___________
#13. _____________ is a moving air
#14. Which from the list is not the source of carbon monoxide ?
#15. Nitrogen has the following importance except
#16. An electronic machine used to input data and process them by after provide output result as information is know as_________
#17. The tree types of sound are the following except
#18. The process by which green plants make their own food is called _______________
#19. These are the uses of Oxygen except
#20. The chemicals we use in agriculture are called _______________________
#21. The processed data is called _____________
#22. Oxygen occupies ___________ in the air
#23. Choose the correct property of air .
#24. The occupation of Nitrogen in air is __________
#25. Choose the correct property of air .
#26. The growing of crops and the keeping of animal is commonly known as________________
#27. These are the importance of Carbon dioxide except
#28. The following are the importance of wind in our daily life except
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