1 |
The boiling point of water is. |
100<sup>o</sup>C
4<sup>o</sup>C
0<sup>o</sup>C
25<sup>o</sup>C
|
2 |
The freezing point of water is: |
10 <sup>o</sup>C
100<sup>o</sup>C
0<sup>o</sup>C
46<sup>o</sup>C
|
3 |
The percentage of potable water on earth is. |
2%
0.2%
0.02%
0.002%
|
4 |
Sea water in unfit for drinking purpose die to the presence of. |
Salts
Algae
Fishes
All of them
|
5 |
Inland water includes. |
River
Lakes
Streams
All of them
|
6 |
The percentage of ocean in world water is. |
50%
67%
97%
25%
|
7 |
The percentage of water in human body is. |
40%
50%
60%
70%
|
8 |
Which one of the following gases is used to destroy harmful bacteria in water. |
Iodine
Chlorine
Fluorine
Bromine
|
9 |
Which one of the following diseases severe diarrhea and can be fatal? |
Joundice
Cholera
Dysentery
Typhoid
|
10 |
Which one of the diseases causes severe diarrhea and can be fatal? |
Jaundice
Dysentery
Cholera
Typhoid
|
11 |
Which one of the following diseases causes liver inflammation? |
Typhoid
Jaundice
Cholera
Hapatitis
|
12 |
Rapid growth of algae in water bodies is because of detergent having. |
Carbonate salts.
Sulphonic acid salts.
Sulphate salts.
Phosphate salts.
|