Q. Washing of coal is done to

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Q. Systemic insecticides

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Q. Dry ice (solidified CO₂) is used for the

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Q. In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the

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Q. Chemical formula of BHC, which is an insecticide is

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Q. A bio-catalyst produced by living cells which acts independent of the cell is called a/an

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Q. Pick out the wrong statement.

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Q. The product obtained on mixing calcium oxide with water is called

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Q. The major constituent of black liquor generated during paper manufacture is sodium

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Q. Electric bulbs are made of __________ glass.

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Q. Which of the following is used as a binding material in soap to improve soap texture ?

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Q. An alkali metal salt of palmitic acid is known as

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Q. Washing soda is chemically represented by

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Q. Magnesium and calcium __________ cause temporary hardness of water.

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Q. Which form of sulphur is the most stable at room temperature ?

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Q. Vegetable oils and fats basically differ in their

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Q. Average sulphur content in Indian pyrites is about __________ percent.

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Q. Oil is a/an

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Q. Which of the following is a constituent of coffee ?

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Q. Blue vitriol is chemically

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