N2 gas is liberated when [HCl + NaNO2] reacts with the following compound :
(A) CH3CH2NH2 (B) Urea
(C) CH3CONH2 (D) C6H5NH2
The answer is :
A , B , C
A , B , D
A, C , D
B , C , D
A.
A , B , C
(A) CH3CH2NH2 CH3CH2OH + N2 + NaCl + H2O
(B) NH2CONH2 O=C-(OH)2 + 2N2 + 2NaCl + 2H2O
O=C-(OH)2 CO2 + H2O
(C) CH3CONH2 CH3COOH + N2 + H2O + NaCl
d(+) lactic acid is obtained from :
fermentation of cane sugar
green vegetables
muscles
fermentation of milk sugar
With CH3MgBr , diethyl ether gives :
coordination complex
n - butane
a mixture of ethyl bromide and methyl bromide
propane
The type of bond that is most important in maintaining secondary structure of a protein is :
disulphide bridges
hydrogen bonding within the backbone
hydrogen bonding between R group
salt bridges
Which of the following is added to food for the flavour of meat ?
Sodium benzoate
Sodium lactate
Sodium citrate
Sodium glutamate