TRB MODEL QUESTIONS FOR CHEMISTRY
6. |
The mass number of hydrogen is |
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7. |
The catalyst used in the conversion of white phosphorous to red phosphorous is |
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- A. Iodine
- B. Sulphur
- C. Carbon
- D. Di-ammonium phosphate
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8. |
A solution of potassium nitrate is |
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- A. Acidic
- B. Akaline or acidic depending on the concentration
- C. Alkaline
- D. Neutral
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9. |
Trimethyl benzene is called |
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- A. Catechol
- B. Mesithyl oxide
- C. Pyrogallol
- D. Mesitylene
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10. |
Tobacco is preserved from drying out in |
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- A. Ethanol
- B. Acetone
- C. Glycerol
- D. Glycol
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