Higher Alkynes from Alkynes

Q.

1. CH₃-CH₃

2. CH₂=CH₂

3. CH₃-CH₂= CH₂

4. none of these

Q. What is the final product $C$, of the following reaction sequence?

1. 
2. 
3. 
4. 

Q. Primary amines can be exclusively formed by ammonolysis of alkyl halides.

1. True
2. False

Q. 1. CH_2=CH_{2 }\xrightarrow{Br_2}(A) \xrightarrow[△]{alcoholic KOH}(B) \xrightarrow{NaNH_2}(C) \xrightarrow[△]{Cu tube}(D) 2. CH_3-CHBr-CH_2-CH_3\xrightarrow{alcoholic KOH}(E) Find A, B , C, D, E

Q. 0 (CH, ), CH-CH, Br(i) (CH, ), CH-CH, BrThe mechanisms of reactions (i) and (ii) are\lbrack AIPMT (Mains)-2011\rbrack(2) S, 2 and S 1(4) S, 1 and S 1respectivelyS 2 and S2(3) S 1 and S 2

Q. (CH_3)_2-C=CH_2 \overset{KMnO_4/H^+}{→ Products} Which one of the following is one of the products formed? (1) CH_3COOH (2) CH_3CHO (3) CH_3O (4) CO_2

Q. Starting from acetylene and any alkyl halide, which of the following yields cyclodecyne?

1. 1 eq. $NaN{H}_2$ and $Br(C{H}_2{)}_{9}Br$
2. 2 eq. $NaN{H}_2$ and $Br(C{H}_2{)}_{8}Br$
3. 1 eq. $NaN{H}_2$ and $Br(C{H}_2{)}_{8}Br$
4. Both b and c

Q.

1. CH₃-CH=C=CH₂

2. H₂C = CH-CH=CH₂

3. CH₃-C≡C-CH₃

4. CH₃-CH₂-C≡CH