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Physical Properties of Alkynes

CaC 2 H 2 O ⟶...

Question

$C a C_{2} H_{2} O - - \to A C u_{2} C l_{2} - ---- \to N H_{4} O H B .$ Incorrect statement is

A

Pure form of 'A' has garlic smell

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B

'A' is used in Hawker's lamp and Holme's signal

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C

'B' is red ppt

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D

Oxidation state of 'Cu' in Cu₂Cl₂ and 'B' is same

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Solution

The correct option is A
Pure form of 'A' has garlic smell

Garlic smell is due to impurities in acetylene like $P H_{3} + H_{2} S$

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Similar questions

$C a C_{2} H_{2} O - - \to A C u_{2} C l_{2} - ---- \to N H_{4} O H B .$ Incorrect statement is

Q. Which gas is used for illumination in hawker's lamp?

Q. Two coloured salt solutions of two metals

A

B

gave precipitates with

N a O H

{N H}_{4} O H

. The oxidation states of salts metal

A

B

are same. On further addition of

{N H}_{4} O H

, the precipitate disappears, in the case of

B

. There is no such change in the case of '

A

N a O H

{N H}_{4} O H

A

B

. Give necessary equations :

A colourless mixture of two substances, (A) and (B) (excess) is soluble in

H_{2} O

, separately. (A) turns blue litmus red and (B) turns red litmus blue. (A) gives white ppt. with (B), which dissolves in excess of (B) forming (C). (A) when placed in moist air gives fumes and can form dimer. (A) gives white ppt. with

{N H}_{4} C l

{N H}_{4} O H

soluble in (B). (A) also gives white precipitate with

{A g N O}_{3}

{N H}_{4} O H

.

Thus, dimer formed has _______ bonding .

P_{4} + K O H + H_{2} O \to A + B_{(g a s)}

'A' is a basic salt of potassium. Find correct option(s) related to 'A' and 'B':

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