Which is the most suitable reagent among the following to distinguish compound (III) from rest of the compounds?
I.
II.
III.
IV.
1. /
2. /
3. Alk.
4. Ammoniacal
The reaction,
+ + HCl
is an example of:
1. Friedel-Crafts reaction
2. Kolbe's synthesis
3. Wurtz's reaction
4. Grignard synthesis
Acetylene reacts with 42% containing 1% to give:
1. 2.
3. HCHO 4.
When was hydrolysed a gas was obtained. It had a garlic odour due to phosgene present as impurity. The gas was passed through ammoniacal solution of , a red ppt. was obtained. The gas was:
1. ethylene 2. propyne
3. acetylene 4. ethane
Ozonolysis (, ) of, gives :
1. +
2. +
3. +
4. none of the above
. The reagent is
1. Na 2. HCl in
3. KOH in 4. Zn in alcohol
The reaction,
is the example of:
(a) sulphonation (b) dehydration
(c) alkylation (d) decomposition
The end product 'W' in the follownign sequence of reactions is :
1. | 2. | ||
3. | \(Ph-CH_2-O-CH_2-CH_2-Ph\) | 4. |
Consider the following reaction sequence
Product is
(1) | |
(2) | |
(3) | |
(4) |
Above conversion can be achieved by:
(a) Zn/H+
(b) LiAlH4
(c) Mg /(ether) then H2O
(d) all of these