اختبار الكتروني Unit 3

1
All the following are from the properties of nitrogen gas expect .............
2
A gas which turns lime water into turbid is ............ gas
3
The rapid combination between oxygen and elements producing heat and light is called ...............
4
Which of the following is from the uses of carbon dioxide gas? ............
5
......... gas is used in making soft drinks
6
During the preparation of oxygen gas, .............. is used as catalyst
7
The percentage of oxygen gas in atmosphere equal .............
8
Legumes as clover benefit from nitrogen in formation of .............
9
Carbon dioxide gas doesn’t burn and doesn’t help in burning
10
Nitrogen is called azure which means gas of life