Question

Chemistry Test 30 marks
*IMPORTANT QUESTIONS ON OXYGEN*


1) The inactive component of air is ```nitrogen```
2) The active composition of air is ```Oxygen```
3) The composition of air which takes part in photosynthesis is ```Carbon dioxide```
4) The composition of air which is responsible for climatic change or weather ```water vapour```
5)The composition of air which is responsible for acid rain ```nitrogen and oxygen```
6)The composition of air which is responsible for marble formation on Earth is ```carbon dioxide and water vapour```
7) The composition of air which in the solid forms dry ice is ```carbon dioxide```
8) The composition of air which in the liquid form helps to store the internal organs of the body is ```nitrogen```
9) The composition of air which in the gaseous state is use to store the oxidation of tinned food products is ```Nitrogen```
10) The pollutant gas of air which is responsible for tarnishing silver is ```Hydrogen sulphite```
11) The pollutant air which causes lung diseases and lead the colour of proton leaves ```Sulphur dioxide```
12) The process involved in burning and respiration is```Oxidation```
13) This natural process needs a catylist like an enzyme is ```respiration```
14) The process in which water is a essential residue along with the product is ```burning and respiration```
15) Metals burn in oxygen to form ```basic oxide```
16) Non - metals burn in oxygen to form ```acidic oxide``` .
17) Magnesium burns in oxygen with a ```white light```
18) Magnesium burns in air or nitrogen with a ```white darling light```
19) Fe3O4 is ```trivalent tetroxide```
20) Triient tetroxide is also called as ```feraso ferric oxide```
21 ) What is called an magnetic oxide of iron
```It is Fe3O4```
22) What oxide is a mixed oxide of iron
```It is Fe2O3```
23) Which two gasses burns in oxygen with two flames ```It is Carbon monoxide and Hydrogen```
24) Compounds of hydrogen and carbon are called as ```Hydro carbons```
25)Any hydro carbon on burning gives ```Carbon dioxide and water vapor```

Note please :
Alcohol , carboxcyil aci,d , asceton, acidic acid also gives carbon dioxide water vapour .​

Answer 1

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Answer 2

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