Kolbe's Electrolysis for Alkanes

Q. In which of the following reactions, the Kolbe's electrolysis product is incorrectly mentioned?

1. 
2. 
3. 
4. 

Q.

When an aqueous solution containing sodium acetate and sodium propionate is electrolysed we get:

1. ethane
2. butane
3. Propane
4. all of these

Q. The concentrated aqueous solution of potassium salts of acetic acid and propanoic acid are electrolyzed. Which of the following are produced?

1. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}C{H}_3$
2. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_3$
3. $C{H}_{3}C{H}_{2}C{H}_3$
4. $C{H}_{3}C{H}_3$

Q. Electrolysis of potassium acetate gives:

1. methane
2. acetylene
3. ethane
4. ethylene

Q. The reaction condition leading to the best yield of $C_2{H}_{5}Cl$ are:

1. $C_2{H}_6\left(excess\right)+C{l}_2\stackrel{hvorheat}{\to }$
2. $C_2{H}_6\left(excess\right)+C{l}_2\stackrel{hvorheat}{\to }$
3. $C_2{H}_6+C{l}_2\left(excess\right)\underset{Roomtemperature}{\overset{dark}{\to }}$
4. $C_2{H}_6+C{l}_2\stackrel{hvorheat}{\to }$

Q. When an aqueous solution containing sodium acetate and sodium propionate is electrolysed we get:

1. Ethane
2. Propane
3. Butane
4. All of these

Q.

Partial reduction of A is selectively done using :

1. Sia₂ BH / AcOH

2. B₂H₆ / CH₃ COOH

3. B₂H₆ / AgNO₃ - NaOH

4. Li Al H₄

Q.

Write the monomers used for getting the following polymers.

(i) Polyvinyl chloride (ii) Teflon (iii) Bakelite

Q. Match the following

List -I (Products)	List -II (Reactants-Reaction)
A) Methane	(1) Sabatier - Senderens reaction of propylene
B) Ethane	(2) Wurtz reaction of methyl iodide
C) Propane	(3) Decarboxylation of sodium acetate
D) Butane	(4) Sodium butanoate by Kolbes electrolysis

(5) Sodium propanoate by Kolbes electrolysis

The correct match is :

1. A-2 B-3 C-1 D-5
2. A-4 B-2 C-1 D-5
3. A-3 B-2 C-1 D-5
4. A-2 B-3 C-1 D-4

Q. isopropyl alcohol is heated with a suspension of bleaching powder Ca0cl2 with water .the products are: 1.ethane and propane 2.ethyne and ethene 3.trichloromethane and cal acetate 4.carbon tetrachloride

Q. How the following conversions can be carried out?
(i) Propene to propan-1-ol (ii) Ethanol to but-1-yne
(iii) 1-Bromopropane to 2-bromopropane (iv) Toluene to benzyl alcohol
(v) Benzene to 4-bromonitrobenzene (vi) Benzyl alcohol to 2-phenylethanoic acid
(vii) Ethanol to propanenitrile (viii) Aniline to chlorobenzene
(ix) 2-Chlorobutane to 3, 4-dimethylhexane (x) 2-Methyl-1-propene to 2-chloro-2-methylpropane
(xi) Ethyl chloride to propanoic acid (xii) But-1-ene to n-butyliodide
(xiii) 2-Chloropropane to 1-propanol (xiv) Isopropyl alcohol to iodoform
(xv) Chlorobenzene to p-nitrophenol (xvi) 2-Bromopropane to 1-bromopropane
(xvii) Chloroethane to butane (xviii) Benzene to diphenyl
(xix) tert-Butyl bromide to isobutyl bromide (xx) Aniline to phenylisocyanide

Q. Acetamide is treated separately with the following reagent. Which one of those would give methylamine?

1. Soda lime
2. $NaOH+B{r}_2$
3. Conc. $H_{2}S{O}_4$
4. $PC{l}_5$

Q. Following compounds are given
(i) $C{H}_{3}C{H}_{2}OH$ (ii) $C{H}_{3}COC{H}_3$
(iii) $C{H}_3-\underset{\underset{C{H}_3}{|}}{C}HOH$ (iv) $C{H}_{3}OH$
Which of the above compound(s) on being warmed with iodine solution and $NaOH$, will give iodoform?

1. Only $\left(ii\right)$
2. $\left(i\right),\left(ii\right)$ and $\left(iii\right)$
3. $\left(i\right)$ and $\left(ii\right)$
4. $\left(i\right),\left(iii\right)$ and $\left(iv\right)$

Q. The product is:

1. 
2. 
3. 
4. 

Q. which of following solution remains acidic at the end of electrolysis? K2CrO4 KMnO4 CH3COOK CuCl2

Q. How the following conversions can be carried out?
Benzyl alcohol to $2-$phenylethanoic acid

Q. Hydrolysis of $SiC{l}_4$ gives ?

1. $Si(OH{)}_4$
2. $SiOC{I}_2$
3. $Si{O}_2$
4. $H_{2}Si{O}_4$

Q. Ethyl alcohol is the hydrolysis product of :

1. $C_2{H}_{5}Cl$
2. $C{H}_{3}CHO$
3. $C_2{H}_{5}MgI$
4. $C_2{H}_4$

Q. In the preparation of alkanes; a concentrated aqueous solution of sodium or potassium salts of saturated carboxylic acid are subjected to .

1. Electrolysis
2. Hydrogenation
3. Hydrolysis

Q. An ester (A) with molecular formula $C_9{H}_{10}{O}_2$ was treated with excess of $C{H}_{3}MgBr$ and the compound so formed was treated with conc. $H_{2}S{O}_4$ to form olefin (B). Ozonolysis of (B) gave ketone with formula $C_8{H}_{8}O$ which shows positive iodoform test. The structure of (A) is?

1. $C_6{H}_{5}COO{C}_6{H}_5$
2. $C_6{H}_{5}COO{C}_2{H}_5$
3. $C{H}_{3}OC{H}_{2}CO{C}_6{H}_5$
4. $C{H}_{3}CO-C_6{H}_5-COC{H}_3$

Q. $Ca{C}_2\stackrel{hydrolysis}{\to }A\stackrel{HgS{O}_4+H_{2}S{O}_4}{\to }B.$

1. acetaldehyde
2. acetone
3. acetic acid
4. acetylene

Q.

how will you convert ethyl chloride into ethane and n-butane?

Q. In this reaction: $C{H}_{3}CHO+HCN\to C{H}_{3}CH\left(OH\right)CN\stackrel{H.OH}{\to }C{H}_{3}CH\left(OH\right)COOH$, an asymmetric centre is generated. The acid obtained would be:

1. $D$ isomer
2. $L$ isomer
3. $50\%$ $D$ + $50\%$ $L$ isomer
4. $20\%$ $D$ + $80\%$ $L$ isomer

Q. Describe the following:
(i) Acetylation (ii) Cannizzaro reaction
(iii) Cross aldol condensation (iv) Decarboxylation

Q. In the preparation of alkanes; a concentrated aqueous solution of sodium or potassium salts of saturated carboxylic acid are subjected to .

1. Electrolysis
2. Hydrogenation
3. Hydrolysis

Q. In which of the following reactions, the Kolbe's electrolysis product is incorrectly mentioned?

1. 
2. 
3. 
4. 

Q. End-product of the complete hydrolysis of $Xe{F}_6$ is :

1. $Xe{F}_{4}O$
2. $Xe{F}_2{O}_2$
3. $Xe{O}_3$
4. $Xe{O}_3^{-}$

Q. When an acidified solution of Na2MoOn atm. Mass=96 is electrolyzed, O2 gas is liberated corresponding to a volume of 0.112L at STP and mass of No deposited is 0.32g.then, the formula of the salt and oxidation state of Mo is

Q. Which of the regent is used to convert 2-butanone into propanoic acid?

1. $NaOH,I_2/H^{+}$
2. Tollen's agent
3. Fehling's solution
4. $NaOH,NaI/H^{+}$

Q.

Write the monomers used for getting the following polymers.

(i) Polyvinyl chloride (ii) Teflon (iii) Bakelite