Q161
Open questionBiogas is formed through
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Chemistry GK · all questionsChemistry in Everyday Life
Chemistry in Everyday Life
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Q162
Open questionCement is formed by strongly heating a mixture of
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Q163
Open questionConsider the following statements.
1. Photochromic lenses are lenses that darken on exposure to ultraviolet light.
2. Photochromic properties is due to embedded microcrystalline of silver chloride in the glass.
Which of the statement(s) given above is/are correct?
1. Photochromic lenses are lenses that darken on exposure to ultraviolet light.
2. Photochromic properties is due to embedded microcrystalline of silver chloride in the glass.
Which of the statement(s) given above is/are correct?
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Q164
Open questionConsider the following statements.
1. Glass wool has tensile strength greater than steel.
2. Glass wool is fire proof.
3. Glass wool has high electrical conductivity and absorbs moisture.
4. Glass wool is used to prepare libre glass.
Which of the statements given above are correct?
1. Glass wool has tensile strength greater than steel.
2. Glass wool is fire proof.
3. Glass wool has high electrical conductivity and absorbs moisture.
4. Glass wool is used to prepare libre glass.
Which of the statements given above are correct?
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Q165
Open questionMatch the species in List I with their types List II.
| List-I | List-II |
| a. DDT | 1. Photochemical smog |
| b. NaClO3 | 2. Disinfectant |
| c. Cl2 | 3. Herbicides |
| d. PAN | 4. Pesticides |
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Q166
Open questionBy-product obtained by soap industry is
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Q167
Open questionWhich one among the following agents is added to domestic LPG cylinder to help in the detection of gas leakage?
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Q168
Open questionCommercially, sodium bicarbonate is known as
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Q169
Open questionZinc sulphide is commonly used as
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Q170
Open questionMatch List-I (Type of glass) with List-II (Composition) and select the correct answer:
| List-I | List-II |
| a. Soda glass | 1. Mixture of potassium and lead silicates |
| b. Crown glass | 2. Mixture of sodium, barium, zinc and magnesium silicates |
| c. Flint glass | 3. Mixture of sodium, zinc and aluminium silicates |
| d. Pyrex glass | 4. Mixture of sodium and calcium silicates |
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