01. |
A mixture concentrated Nitric Acid and Hydrochloric acid in the ratio 1:3 is known as ? |
02. |
The greatest number of compounds are formed by the element ? |
03. |
The negative electrode is called ? |
04. |
The temporary hardness of water is removed by ? |
05. |
What is called king of Chemical ? |
06. |
What is the pH factor od pure water ? |
07. |
Which compound is called "Gun-cotton” ? |
08. |
Which gas is used for artificial ripening of green fruits ? |
09. |
Which gas is used for extinguishing for ? |
10. |
Which gas is used for preparation of soda water ? |
11. |
Which gas liberated on heating lime stone ? |
12. |
Which is given to water permanent hardness ? |
13. |
Which is known as little silver ? |
14. |
Which is known as the purest form of iron ? |
15. |
Which is the first metal used by man ? |
Answer
| 01. | Aqua Regia | 09. | Carbon Dioxide |
| 02. | Carbon | 10. | Carbone Dioxide |
| 03. | Cathode | 11. | Carbon Dioxide |
| 04. | Boiling the water | 12. | Calcium Sulfate |
| 05. | Sulphuric Acid | 13. | Platinum |
| 06. | 7 | 14. | Wrought Iron |
| 07. | Cellulose Nitrate | 15. | Copper |
| 08. | Ethylene |
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