Other Synthesis Methods

Q.

Which among the following pairs of molecules can be distinguished by haloform reaction?

1. ${\mathrm{CH}}_3\mathrm{CHO}$ and ${\mathrm{CH}}_3{\mathrm{COCH}}_3$

2. ${\mathrm{CH}}_3\mathrm{CHO}$ and ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

3. ${\mathrm{CH}}_3\mathrm{OH}$ and ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

4. $\mathrm{HCHO}$and ${\mathrm{CH}}_3\mathrm{CHO}$

Q.

Which of the following reaction will not result in the formation of carbon-carbon bonds?

1. Friedal – craft acylation

2. Reimer – Tiemann reaction

3. Wurtz reaction

4. Cannizzaro reaction

Q. The high boiling point of ethanol $\left[{78.2}^{\circ }C\right]$ compared to dimethyl ether $[–{23.6}^{\circ }C]$, though they have the
same molecular formula $\left(C_2{H}_{6}O\right)$ is due to

1. Ionic bonding
2. Co-ordinate covalent bonding
3. Resonance
   
4. Hydrogen bonding

Q.

Alkenes usually show which type of reaction

1. Addition

2. Substitution

3. Elimination

4. Superposition

Q. Match the following enzymes given in Column $I$ with the reactions they catalyse given in Column $II$.

$\begin{array}{cccc}& \text{Column I (Enzymes)}& & \text{Coulmn II (Reactions)}\\ A& \text{Invertase}& \left(i\right)& \text{Decomposition of urea into}N{H}_3\text{and}C{O}_2\\ B& \text{Maltase}& \left(ii\right)& \text{Conversion of glucose into ethyl alcohol}\\ C& \text{Pepsin}& \left(iii\right)& \text{Hydrolysis of maltose into glucose}\\ D& \text{Urease}& \left(iv\right)& \text{Hydrolysis of cane sugar}\\ E& \text{Zymase}& \left(v\right)& \text{Hydrolysis of proteins into peptides}\end{array}$

Q.

Propanamide on treatment with bromine in an aqueous solution of sodium hydroxide gives:

1. Butanamide

2. Propanamine

3. Butanamie

4. Ethanamine

Q.

	Column I		Column II
A	$C{H}_3-CHBr-C{D}_3$/on treatement with alc.KOH gives $C{H}_2=CH-C{D}_3$ as a major product	P	E1 reaction
B	$Ph-CHBr-C{H}_3$ reacts faster than $Ph-CHBr-C{D}_3$	Q	E2 reaction
C	$Ph-C{H}_2-C{H}_2-F$ on treatement with $C_2{H}_{5}OD/C_2{H}_5{O}^{-}$gives $Ph-CD=C{H}_2$ as the major product	R	E1cB reaction
D	$Ph-C{H}_2-C{H}_2-Br$ and $Ph-C{D}_2-C{H}_2-Br$react with same rate	S	First order reaction

1. $A-Q;B-Q;C-R,S;D-P,S$
2. $A-Q;B-P,S;C-R,S;D-Q$
3. $A-P;B-P,S;C-R;D-Q$
4. $A-P,S;B-Q,S;C-P,S;D-R,S$

Q. Which of the following is most reactive toward Hydrolysis ? (1) CH3CONH2 (2) CH3COCl (3) ethanoic anhydride (4) ethyl ethanoate

Q. The monomer of natural rubber is

1. cis 2-methyl-1, 3-butadiene
2. tran 2-methyl-1, 3-butadiene
3. Propylene
4. Ethene

Q. 50.What wil be formed when 1-PHENYL PROPENE is reacted with HBr in the presence of organic peroxide? ( SHOW THE MECHANISM OF THE REACTION ) A) 1-CHLORO, 1-PHENYL PROPANE B) 2-CHLORO, 1-PHENYL PROPANE

Q. The desired product X can be prepared by reacting the major product of the reactions in LIST-I with one or more appropriate reagents in LIST-II.
(Given, order of migratory aptitude: aryl > alkyl > hydrogen)


The correct option is :

1. P-1; Q-2, 3 ; R-1, 4; S-2, 4
2. P-1, 5; Q-3, 4; R- 4, 5; S- 3
3. P-1, 5; Q-3, 4; R-5; S-2, 4
4. P-1, 5; Q-2, 3; R-1, 5; S-2, 3

Q.

What happens when Acetaldehyde is treated with Fehling’s Solution?

Q.

Acetophenone can be obtained by the distillation of:

1. (C6H5COO)2Ca and (HCOO)2Ca
2. (C6H5COO)2Ca
3. (CH3COO)2Ca
4. (C6H5COO)2Ca and (CH3COO)2Ca

Q. 5. Benzyl chloride reacts with hot alkali solution to form benzyl alcohol but chloro benzene does not react with alkali solution under same condition .why

Q. What are the other acid sensitive groups for which clemmensen reaction cannot be used?

Q.

During pyrolysis of alkane C - C bond breaks faster than C - H bond because

1. C - C bond is strong

2. C - H bond is weak

3. The bond energy of C - C bond is less than that of C - H bond

4. C - C bond involves π- bond in alkanes

Q. The reaction $Ar{N}_2^{+}{X}^{-}\stackrel{Cu/HCl}{\to }ArCl+N_2+CuX$ is named as

1. Sandmeyer reaction
2. Gattermann reaction
3. Hoffmann bromamide degradation reaction
4. Carbylamine reaction

Q. What is the final major product of the following reaction ?

1. 
2. 
3. 
4. 

Q.

An $\mathrm{NaOH}$ pellet is an example of____(deliquescence/efflorescence).

Q. (a) How will you convert the following :
(i) Propanone to Propan-2-ol
(ii) Ethanal to 2-hydroxy propanoic acid
(iii) Toluene to benzoic acid
(b) Give simple chemical test to distinguish between :
(i) Pentan-2-one and Pentan-3-one
(ii) Ethanal and Propanal

Q. Which of the following compounds will not give a positive test with Tollens' reagent?

1. 
2. 
3. $C{H}_{3}C{H}_{2}NH-OH$
4. 

Q. Cyclo butane on hydrogenation in presence of nickel catalyst gives?

Q. Esters on catalytic hydrogenation always give a mixture of

1. Acid and alcohol
2. two alcohols
3. two acids
4. Aldehyde and alcohol

Q.

What are Etard Reaction and Gattermann Koch Reaction? Give example.

Q. Which of the following conversions is known as Stephen’s reduction?

1. 
2. 
3. 
4. 

Q. Acetone can not be obtained from:

1. Hydrolysis of isopropylidene chloride
2. Hydration of propyne
3. Dehydrogenation of isopropyl alcohol
4. Hydrolysis of ester

Q. In the following sequence of reactions:
$\text{Toluene}\underset{ii)H_3{O}^{+}}{\overset{i)KMn{O}_4/KOH,\Delta }{\to }}A\stackrel{SOC{l}_2}{\to }B\underset{BaS{O}_4}{\overset{H_2/Pd}{\to }}C$

The product C is:

1. $C_6{H}_{5}COOH$
2. $C_6{H}_{5}C{H}_3$
3. $C_6{H}_{5}C{H}_{2}OH$
4. $C_6{H}_{5}CHO$

Q. Reaction between $(C_2{H}_5{)}_{2}Cd$ and $C{H}_{3}COCl$ leads to the formation of -

1. dimethyl ketone
2. diethyl ketone
3. ethyl methyl ketone
4. acetaldehyde

Q. Which among the following reaction(s) gives methyl alcohol?

1. The reaction of ethylene with $H_{2}S{O}_4$ at ${80}^{\circ }C$
2. The reaction of water gas with hydrogen at high temperature
3. Alkaline hydrolysis of methyl bromide
4. Destructive distillation of wood

Q. Write balanced equation for : Acetic acid is warmed with ethanol in the presence of conc. $H_{2}S{O}_4$.