When a substance A reacts with water it ...

When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour a smokeless flame to Bunsen burner. A,B,C, and D respectively are `:`

`Na, H_(2), NaOH and Zn`

`K, H_(2), KOH and Al`

`Ca, H_(2), Ca(OH)_(2), and Sn`

`CaC_(2), C_(2)H_(2), Ca(OH)_(2) and Sn`

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When a substance a reacts with water, it produces a combustible gas B and a solution of substance C in water. When another substances D reacts with this solution of C . It also produce gas B on reaction with dilute sulphuric acid at room temperature . A imparts a deep golden yellow colour to the smokless flame of bunsen flame A,B , C and D are respectively

When a substance A reacts with water it produces a conbustible gas B and a solution of substance C in water. When another substance D reacts with this soution of C , it also produces the same gas B on warming but D can produce B on reaction with dilute sulphuric acid at room temperature. B on reaction with dilute sulphuric acid at room tempreture. A imparts a golden yellow colour to a smokeless flame of bunsen flame. A,B,C and D are respectively.

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