| 1 |
Ultraviolet radiations can causes. |
- A. Hepatitis
- B. Asthma
- C. Skin cancer
- D. Night blindness
|
| 2 |
In the bessemerization process. |
- A. Roasted ore is beated.
- B. Molten matte is removed.
- C. Molten matte is heated
- D. Molten matte is added
|
| 3 |
Swimming pools are cleaned by the process. |
- A. Chlorination
- B. Hydrogenations
- C. Saponification
- D. None of them
|
| 4 |
Latin word 'Acidus' means: |
- A. sweet
- B. salty
- C. sour
- D. bitter
|
| 5 |
Which one gas is liberated when alkalies react with ammonium salts? |
- A. O<sub>2</sub>
- B. CO<sub>2</sub>
- C. H<sub>2</sub>
- D. NH3
|
| 6 |
How many percentage of protein is present in dry weight of animal? |
- A. More then 20%
- B. More then 30%
- C. More then 40%
- D. More then 50%
|
| 7 |
Ethyl butanoate smells like. |
- A. Apple
- B. Pine apple
- C. Lemon
- D. Melon
|
| 8 |
Some orchids attracts bees for pollination by producing. |
- A. alkanes
- B. almenes
- C. alkynes
- D. all the above.
|
| 9 |
High concentration of which metal clogs the fish gills. |
- A. Zinc
- B. Aluminium
- C. Sodium
- D. Copper
|
| 10 |
Who was prepared acetic acid in laboratory? |
- A. Berzelius
- B. Wohler
- C. Kolbe
- D. Dalton
|
