Chlorophyll is a naturally occurring chelate compound in which central metal is

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Chlorophyll is a naturally occurring chelate compound in which central metal is

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1) Which of the following metals remain in liquid for under normal conditions?

2) Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?

3) Paper is manufactured by

4) The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of

5) Detergents used for cleaning clothes and utensils contain?

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