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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 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

A

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

B

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

C

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

D

`CaC_(2),C_(2)h_(2),Ca(OH)_(2),Fe`

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NARAYNA-QUALITATIVE ANALYSIS-Level -II (H.W.)
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  2. When a substance a reacts with water, it produces a combustible gas B ...

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  3. Which of the following leaves no residue on heating ?

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  4. Which one has the minimum solubility product ?

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  5. Which of the following gives green colour to the flame ?

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  6. An element (X) forms compounds of the formuls XCl(3),X(2)O(5) and Ca(3...

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  7. A white sodium salt dissolves readily in water to give a solution whic...

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  8. The brown ring test for NO(2)^(-) and NO(3)^(-) is due to the formatio...

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  9. In Nessler's reagents, the ion present is :

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  10. When I(2) is passed through KCl, KF,KBr :

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  11. Oxalate +MnO(2)+"dil."H(2)SO(4)rarr Gas. The gas evolved is

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  12. When a mixture containing phosphate is heated with conc. HNO(3) and am...

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  13. A gas is evolved which burns with blue flame when the mixture is heate...

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  14. In the brown ring complex [Fe(H(2)O)(3)NO]SO(4) nitric oxide behaves ...

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  15. A gas is obtained by addition of dil. H(2)SO(4) to a mixture which tur...

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  16. A metal X on heating with nitrogen gas gives Y.Y on treatment with H(2...

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  17. A pale yellow precipitate and a gas with pungent odour are formed on w...

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  18. A mixture of two salts is not water soluble but dissolves completely...

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  19. Three separate samples of a solution of a single salt gave these resul...

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  20. Which is not dissolved in dil. HCl?

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