Distinguishing Test of Terminal and Non Terminal Alkynes

Q. ques . Calcium carbide produces acetylene on reaction with water . ethylene can be obtained by reduction of C_2H_{2._{}}polythene is produced by polymerisation of C_2H_4. Calculate the theoretical yeild of polythene per ki\log ram of CaC_2. (a)0.6457Kg (b)0.4375Kg (c)0.5113Kg (d)0.3948k

Q. how does propene react with NBS

Q. Identify a reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.

1. $B{r}_2$, $CC{l}_4$
2. $H_2,Pd,BaS{O}_4$
3. Dilute $H_{2}S{O}_4$, $HgS{O}_4$
4. $\left[Ag\right(N{H}_3{)}_2]N{O}_3$

Q.

$C{H}_{3}C\equiv CH\stackrel{NaN{H}_2}{\to }X\stackrel{C{H}_{2}C{H}_{2}Br}{\to }Y.$ Identify the product 'Y' is

1. Pent - 2 - ene

2. Pent - 2 - yne

3. Pentane

4. Pent - 1 - yne

Q. the first question
Q. A hydrocarbon Y decolorizes bromine water. On ozonolysis it gives 3-methyl butanal and formaldehyde. Give the name and formula of the compound with the respective ozonolysis reaction.
(ii) Write one reaction to show the acidic nature of ethyne.
(iii) State Markovnicoffs rule. Using this write the reaction of propene with HCl

Q.

Propose structures for hydrocarbons that give the following products on oxidative cleavage by $KMn{O}_4$ or $O_3$:

1. 
2. 
3. 
4. 

Q.

When treated with ammoniacal cuprous chloride, which one among the following forms copper derivative

1. C₂H₆

2. C₂H₄

3. C₂H₂

4. C₆H₆

Q. The hydrocarbon shown below is allowed to react with reducing agent(X) to give the product. Select the most appropriate reagent 'X' for the below conversion.

1. $Na/liqN{H}_3$
2. Lindlar's catalyst$\left(H_{,}Pd/C\right)$
3. Both reagent can be used
4. Na, dry ether

Q. In which of the following pairs, both the hydrides are not of the same type?

1. $La{H}_3.Ti{H}_2$
2. $C{H}_4,H_{2}S$
3. $NaH,Ca{H}_2$
4. $Ba{H}_2,Si{H}_4$

Q. A unknown gas 'A' decolourises bromine in $CC{l}_4$ and forms a precipitate with ammoniacal silver nitrate. The gas 'A' is:

1. $C_2{H}_2$
2. $C_2{H}_4$
3. $C_2{H}_6$
4. $C{H}_4$

Q. $A\underset{\text{Catalyst}}{\overset{Lindla{r}^{\prime }s}{\leftarrow }}R-C\equiv C-R\stackrel{\text{Birch reduction}}{⟶}B$
Where, A and B are geometrical isomers $(R-CH=CH-R)$.
Choose the correct option from the following:

1. A and B both are trans
2. A is cis, B is trans
3. A and B both are cis
4. A is trans, B is cis

Q. For the given reaction :
$R\underset{\left(ii\right)H_{2}O}{\overset{\left(i\right)O_3}{\to }}\text{Only one product}$

Here R can be :

1. 
2. 
3. 
4.