Hydrocarbons Question 52
Question: A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammoniacal silver nitrate solution. Gas evolved is [NCERT 1975; CPMT 1977; MP PET 2002]
Options:
A) Methane
B) Ethane
C) Acetylene
D) Ethylene
Show Answer
Answer:
Correct Answer: C
Solution:
$ CaC_2+2H_2O\to Ca{{( OH )}_2}+C_2H_2 $
$ CH\equiv CH+2[Ag{{(NH_3)}_2}]OH\to $
$ Ag\underset{Whiteppt\text{.}}{\mathop{-C\equiv C-}}Ag+4NH_3+2H_2O $
BETA
