Chlorination

Q. How to find number of isomers for any Organic compound?

Q.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields

(i) A single monochloride.

(ii) Three isomeric monochlorides.

(iii) Four isomeric monochlorides.

Q. Number of moles of MnO4 required to oxidize one mole of ferrous oxalate completely in acidic medium will be

Q. Which types of isomerism is shown by 2, 3-dichlorobutane?

1. Structural
2. Geometrical
3. Optical
4. None of the above

Q. The maximum number of isomers (including stereoisomers) that are possible on mono-chlorination of the following compound is ___:

Q.

What happens when methane reacts with chlorine? Write the chemical equations for the reactions.

Q. The reaction that does not give benzoic acid as the major product is:

1. 
2. 
3. 
4. 

Q. Match List-I with List-II

List-I	List-II
(a)	(i) Hell-Volhard-Zelinsky reaction
(b)	(ii) Gattermann-Koch reaction
(c) IMAGE	(iii) Haloform reaction
(d) IMAGE	(iv) Esterification

Choose the correct answer from the options given below.

1. (a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)
2. (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
3. (a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)
4. (a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)

Q. Which of the following alkane(s) on halogenation gives only only one monohalogenated product?

1. n-butane
2. 2-methylbutane
3. 2, 2-dimethylpropane
4. Cyclopentane

Q. Explain salts of oxo-acids in detail?

Q. 40. Write the chemical equations for the following reactions: i) Reaction of ethanolic NH3 with C2H5Cl. ii)Ammonolysis of benzyl chloride and reaction of amine so formed with two moles of CH3Cl.

Q. Formation of alkane by action of zinc and alkyl halide is called as

1. Corey-House synthesis
2. Wurtz reaction
3. Kolbe's reaction
4. Frankland reaction

Q.

How do you account for the formation of ethane during chlorination of methane?

Q.
The number of chiral centers generated during monochlorination in the above reaction is:

1. 4
2. 1
3. 2
4. 3

Q. The conversion of ozone into oxygen is exothermic, under what condition is ozone the most stable?
$2O_3\left(g\right)\rightleftharpoons 3O_2\left(g\right)$

1. At low pressure and low temperature
2. At high pressure and high temperature
3. At high pressure and low temperature
4. At low pressure and high temperature

Q.

Which of the following is used as an anti-knocking material?

1. T.E.L

2. ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$

3. Glyoxal

4. Freon

Q. In which of the following pairs, first structure is more stable than second?

1. 
2. 
3. 
4. 

Q. In the free radical chlorination of methane, the chain initiation step involves the formation of:

1. Methyl radical
2. Chloromethyl radical
3. Chlorine radical
4. Hydrogen chloride

Q. The number of possible enantiomeric pairs that can be produced during monochlorination of 2-methylbutane is

1. 2
2. 4
3. 3
4. 1

Q. Isopentane on monochlorination gives four isomeric monochloro derivatives of isopentane. Which product(s) has/have yield less than 35% in the mixture?

1. 1-chloro-2-methylbutane
2. 2-chloro-2-methylbutane
3. 2-chloro-3-methylbutane
4. 1-chloro-3-methylbutane

Q.

What is a 5 Carbon ring called?

Q. The reactivity of hydrogen atoms attached to carbon atom in the halogenation of an alkane has the order:

1. Secondary > Primary > Tertiary
2. Tertiary > Secondary > Primary
3. Primary > Secondary > Tertiary
4. Tertiary > Primary > Secondary

Q. The reactivity of hydrogen atom in an alkane towards substitution by bromine atom is

1. > >
2. < <
3. > <
4. < >

Q. An alkane (molecular weight 72) forms only one monochlorinated product. Its formula is

1. (CH₃)₄C
2. CH₃(CH₂)₃CH₃
3. (CH₃)₂CHCH₂CH₃
4. 

Q. How to find total number of isomers in a given compound?

Q. How many optical isomers are possible in a compound with one chiral carbon ?

1. $5$
2. $4$
3. $2$
4. $3$

Q. The total number of stereoisomers possible for $2,3$ - Dichlorobutane:

1. $2$
2. $3$
3. $4$
4. $5$

Q. On Friedel-Crafts alkylation, anisole yields major product:

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

Q. $15\text{mL}$ of a gaseous hydrocarbon was required for complete combustion in $357.15\text{mL}$ of air ($21\%$ of oxygen by volume) and the gaseous products occupied $327\text{mL}$ (all volumes being measured at NTP). What is the formula of the hydrocarbon?

1. $C_3{H}_8$
2. $C_4{H}_8$
3. $C_5{H}_{10}$
4. $C_4{H}_{10}$

Q. Write the correct reactivity order towards photochemical chlorination.
(X) $C{H}_3-C{H}_2-C{H}_2-C{H}_2-C{H}_3$

(Y) $C{H}_3-\stackrel{\stackrel{C{H}_3}{|}}{CH}-C{H}_2-C{H}_3$

(Z) $C{H}_3-\stackrel{\stackrel{C{H}_3}{|}}{\underset{\underset{C{H}_3}{|}}{C}}-H$

(W) $C{H}_3-C{H}_3$

1. X > Y > Z > W
2. Z > Y > X > W
3. X > Z > W > Y
4. Z > W > Y > X