DIRECTIONS : Questions based on Chemistry.
1. |
Which one of the following when dissolved in HO gives hissing sound? |
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A. Limestone |
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B. slacked lime |
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C. soda lime |
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D. quick lime |
2. |
Which one of the following is also called Stranger Gas? |
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A. Argon |
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B. Neon |
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C. Xenon |
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D. Nitrous oxide |
4. |
Which one of the following is used as a mordant in dying and tanning industry? |
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A. Magnesium oxide |
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B. Magnesium carbonate |
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C. Magnesium chloride |
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D. Magnesium sulphate |
5. |
Mixture of which one of the following pairs of gases is the causes of occurance of most of the explosion in mines? |
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A. Hydrogen and oxygen |
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B. oxygen and acetylene |
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C. Methane and air |
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D. Carbon dioxide and methane |