Q661
Open questionThe element used in the manufacture of safety matches is
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Q662
Open questionThis group of alumino-silicate minerals is widely used in making electrical insulators
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Q663
Open questionCommercial Vaseline is derived from
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Q664
Open questionAlum is used as
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Q665
Open questionAntacid tablets consist of
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Q666
Open questionAspirin is
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Q667
Open questionAspirin is common name of
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Q668
Open questionBy-product obtained by soap industry is
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Q669
Open questionChloroform can be used as
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Q670
Open questionSoap helps in better cleaning of clothes because
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Q671
Open questionStains of rust on clothes can be removed by :
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Q672
Open questionOne of the constituents of tear gas is
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Q673
Open questionThe element used for making solar cells is
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Q674
Open questionDDT and BHC may act as
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Q675
Open questionGunpowder consists of a mixture of
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Q676
Open questionDetergents are
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Q677
Open questionThe metal compound commonly found in Sindhoor or Kumkum is based on
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Q678
Open questionSubstance used as an anti freeze in radiators of automobiles is :
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Q679
Open questionWhich of the following is used to remove rust stains on cloth?
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Q680
Open questionWhich is not an anasthetic agent in surgical operations?
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