16 .Deficiency of which one of the following cause knock knee, bow legs and pigeon chest in children-
Answer & Explanation
Answer : Option C |
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17 .Cobalt - 60 is commonly used inradiation therapy because it emits-
Answer & Explanation
Answer : Option C |
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18 .At high altitudes the boiling point of water lowers because-
Answer & Explanation
Answer : Option A |
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19 .The enzymes are killed-
Answer & Explanation
Answer : Option A |
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Explanation : |
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20 .Nitrogen in water is commonly found in the form of :
Answer & Explanation
Answer : Option A |
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21 .The ore of Aluminium is
Answer & Explanation
Answer : Option D |
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Explanation : |
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22 .Which one among the following fules is used in gas welding?
Answer & Explanation
Answer : Option B |
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23 .Neutrino has-
Answer & Explanation
Answer : Option B |
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24 .Fementation of ethyl alcohol into acetic acid is done by-
Answer & Explanation
Answer : Option D |
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Explanation : |
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25 .Which of the following is used as raw material for the manufacture of rayon?
Answer & Explanation
Answer : Option C |
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Explanation : |
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26 .When or is heated generally in absence of air then process is called-
Answer & Explanation
Answer : Option B |
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27 .One of the best solutions to get rid of non - biodegradable wastes is
Answer & Explanation
Answer : Option A |
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28 .It is reported that there is an ongoing decrease in the pH value of ocean water because of global warming. It happens due to:
Answer & Explanation
Answer : Option A |
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29 .Source of vitamin C is
Answer & Explanation
Answer : Option B |
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30 .Water attains maximum density at-
Answer & Explanation
Answer : Option D |
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Explanation : |
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