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When BeCl(2) is hydrolysed, white fumes ...

When `BeCl_(2)` is hydrolysed, white fumes of gas are given out. The intensity of fumesintensifies when a rod dipped in moist ammonia is brought near the mouth of the test tube. The gas which comes out during hydrolysis is

A

`Cl_(2)`

B

`HCl`

C

`NH_(4)OH`

D

`NH_(4)Cl`

Text Solution

Verified by Experts

The correct Answer is:
B
`BeCl_(2)+2H_(2)O to Be(OH)_(2)+ underset(("fumes"))(2HCl)HCl+NH_(3) to underset(("intense fumes"))(NH_(4)Cl)`
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NCERT FINGERTIPS ENGLISH-THE S-BLOCK ELEMENTS-Assertion And Reason
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  2. Assertion: Elements of group 1 are called 'alkali metals'. Reason: A...

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  3. Assertion: Lithium resembles magnesium diagonally placed in next group...

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  4. Assertion: Alkali metals are obtained by electrolysis of molten salt a...

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  5. Assertion: Lithium salts are mostly hydrated. Reason: The hydration ...

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  6. Assertion: The melting and boiling points of the alkali metals are low...

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  7. Assertion: Lithium fluoride is most covalent in nature. Reason: Smal...

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  8. Assertion: The carbonate of lithium decomposes easily on heating. Re...

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  9. Assertion : Super-oxides of alkali metals are para-magnetic. Reason ...

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  10. Assertion: Be and Mg do not impat characteristic colour to the flame. ...

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  11. Assertion: The fluorides of alkaline earth metals are relatively less ...

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  12. Assertion: Be is readily attacked by acids. Reason: Be shows diagona...

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  13. Assertion: Alkaline earth metal oxides are quite stable to heat. Rea...

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  14. Assertion: BeSO(4) and MgSO(4) are insoluble in water. Reason: Be^(2...

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  15. Assertion: CaCO(3) is prepared by passing carbon dioxide gas through s...

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  16. Assertion: For biological functions in human body, barium is not requi...

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