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