2-bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is
1. 2-ethoxypentane
2. pent-1-ene
3. trans-pent-2-ene
4. cis-pent-2-ene
RCOCl and are used in the Friedel-Crafts reaction.
The electrophile among the following is:
1.
2. RCOCl
3. O
4.
The reaction,
is the example of:
1. sulphonation
2. dehydration
3. alkylation
4. decomposition
Alkene-1 on hydroboration followed with action of gives:
1. alkanol-2
2. alkanol-1
3. alkanal
4. alkanone
Which of these will not react with acetylene?
1. NaOH
2. Amm.
3. Na
4. HCl
.
The reagent is:
1. Na
2. HCl in
3. NaNH2
4. Zn in alcohol
Silver acetylide when heated with HCl gives:
1.
2.
3.
4.
In the following reaction the catalyst used is:
+ 3
1. 2.
3. Zn dust 4. and
Gammexane (a -isomer) is:
1. BHC
2. Benzene hexachloride
3. Lindane
4. All of the above
An alkene, obtained by the dehydration of an alcohol (A), on ozonolysis gives two molecules of acetaldehyde for every molecule of alkene. The alcohol (A) is:
1.
2.
3.
4.