Decarboxylation Reaction of Alkanes

Q.

Which among the following compounds on reaction with methyl magnesium bromide followed by hydrolysis with water will give 2-methyl-2-propanol?

1. C₂H₅COOCH₃

2. HCOOC₂H₅

3. CH₃COCH₃

4. CH₃CH₂CHO

Q.

How will you convert ethene to ethane?

Q.

What are the factors affecting the product of electrolysis?

Q. When sodium propionate is heated with soda lime, the main product is

1. Ethane
2. Methane
3. Butane
4. Propane

Q. A compound is treated with $NaN{H}_2$ to give sodium salt. Identify the compound.

1. $C_2{H}_2$
2. $C_6{H}_6$
3. $C_2{H}_6$
4. $C_2{H}_4$

Q.

Indicate the steps in the preparation of:

(i) K2Cr2O7 from chromite ore.

(ii) KMnO4 from pyrolusite ore.

Q.

Alcohols and phenols react with Grignard reagent and form:

1. Aniline

2. Hydrocarbons

3. Phenyl benzoate

4. Alkyl bromide

Q. 20. During electrolysis of aq. CuSO4 solutions using Pt electrodes, identify correct statement 1) pH increases with time 2) pH decreases with time

Q.

Write the conditions to maximize the yield of H₂SO₄ by Contact process.

Q. Oxidation product of 1, 2-cyclopentanediol with $HI{O}_4$ is:

1. 
2. 
3. 
4. None of the above

Q. (a) Account for the following :

(i) $Cl-C{H}_{2}COOH$ is a stronger acid than $C{H}_{3}COOH$.

(il) Carboxylic acids do not give reactions of carbonyl group.

(b) Write the chemical equations to illustrate the following name reactions :

(i) Rosenmund reduction

(ii) Cannizzaro's reaction

(c) Out of $C{H}_{3}C{H}_2-CO-C{H}_2-C{H}_3$ and $C{H}_{3}C{H}_2-C{H}_2-CO-C{H}_3$, which gives iodoform test?

Q. Give reasons for the following:
(a) Protanation of Phenols is difficult whereas ethanol easily undergoes protonation.
(b) Boiling point of ethanol is higher than that of dimethyl ether.
(c) Anisole on reaction with HI gives phenol and $C{H}_3-I$ as main products and not iodobenzene and $C{H}_{3}OH$.

Q. The catalyst used in the manufacture of $HN{O}_3$ by Ostwald's process is

1. platinum gauze
2. vanadium pentoxide
3. finely divided nickel
4. platinum black

Q. Anhydrous sodium acetate on heating with sodalime gives

1. Acetic acid
2. Methane
3. Calcium acetate
4. Ethane

Q. conversion of propene to bromopropan

Q. An organic compound $X$ is oxidized by using acidified $K_{2}C{r}_2{O}_7$. The product obtained reacts with phenyl hydrazine, but does not answer silver mirror test. The possible structure of $X$ is:

1. $C{H}_{3}C{H}_{2}OH$
2. $(C{H}_3{)}_{2}CHOH$
3. $C{H}_{3}COC{H}_3$
4. $C{H}_{3}CHO$

Q.

What are the uses of ethane?

Q. Chloroethane on reacting with ammonia gives ? A. Ethanamine B.Propanamine C. Benzylamine D. Ethane nitril

Q.

What are ethoxylated surfactants?

Q. The volume of gases evolved by passing $0.965$ ampere current for $10$ hours through an aqueous solution of $C{H}_{3}COONa$ at STP.

1. $8.06L$
2. $16.13L$
3. $32.24L$
4. $1.76L$

Q.

Define electrolysis and what is the process of electrolysis?

Q. 99.The potential of a hydrogen electrode at ph=1 is

Q.

State the appropriate term used for: A liquid or solution which conducts electricity with accompanying chemical change.

Q. During the electrolysis of an aqueous solution of $NaCl,10.3g$ of chlorine was liberated at STP. Calculate the volume of hydrogen that would be liberated at ${20}^{o}C$ and $740mmofHg$ pressure from acidulated water, when the same quantity of current as that used in the electrolysis of $NaCl$ was passed.

1. $5521cc$
2. $3249cc$
3. $3582cc$
4. $2843cc$

Q. Consider the following sequence of reactions.
$PhCH(C{H}_3{)}_2\underset{Hv}{\overset{O_2}{\to }}A$
$A\underset{\text{warm}}{\overset{aq.H_{2}S{O}_4}{\to }}B+C$

The products (B) and (C) are respectively:

1. $PhCOOH\text{and}C{H}_{3}COC{H}_3$
2. $PhCOH\text{and}C{H}_{3}COOH$
3. $PhOH\text{and}C{H}_{3}COC{H}_3$
4. $PhCOC{H}_3\text{and}C{H}_{3}COOH$

Q. For the reduction of ketones to hydrocarbon, the appropriate agent is

1. $HI$
2. Red phosphorous
3. $Zn-Hg/HCl$
4. $H_{2}S{O}_4$

Q.

Name the process by which ethane is obtained from ethene.

Q. When sodium propionate is heated with soda lime, the main product is

1. Ethane
2. Methane
3. Propane
4. Butane

Q. 1m aqueous solution of NaCl undergo electrolysis a 50 milliampere current is passed for 12 hours Azeem current efficiency is 25% the total volume of gas produce at standard state is

Q. During the Kolbe electrolysis of aqueous solution of sodium acetate, 45 ml of $H_2$ gas is liberated at the cathode. Then, the volume of the gases liberated at the anode is:

1. 15 ml
2. 90 ml
3. 70 ml
4. 135 ml