Question

$Ca{C}_2\stackrel{H_{2}O}{\to }A\underset{N{H}_{4}OH}{\overset{C{u}_{2}C{l}_2}{\to }}B.$ Incorrect statement is

• A. Pure form of 'A' has garlic smell
• B. 'A' is used in Hawker's lamp and Holme's signal
• C. 'B' is red ppt
• D. Oxidation state of 'Cu' in Cu₂Cl₂ and 'B' is same

Answer 1

The correct option is A

Pure form of 'A' has garlic smell

Garlic smell is due to impurities in acetylene like $P{H}_3+H_{2}S$
B is a reddish brown precipitate of $C{u}_2{C}_2$.