Match columns A, B, and C suitably. A Reactants B Products C Name of Reaction CH 4 + Cl 2 CO 2 + 2 H 2 O Addition CH 4 + 2 O 2 CH 2 = CH 2 Thermal cracking CH 3 - CH 2 - CH 3 CH 3 Cl + HCl Combustion CH ≡ CH + H 2 CH 2 = CH 2 + CH 4 Substitution

CH 4 + Cl 2 C H 3 C l + H C l Substitution reaction Methane undergoes a substitution reaction with chlorine in the presence of light. This reaction is a substitution reaction because one of the hydrogen atoms from the methane is replaced by a chlorine atom. CH 4 + 2 O 2 CO 2 + 2 H 2 O Combustion When methane is heated in the presence of sufficient air or dioxygen it forms carbon dioxide and water and an enormous amount of heat energy is released. CH 3 - CH 2 - CH 3 CH 2 = CH 2 + CH 4 Thermal cracking Propane when heated in the absence of air undergoes decomposition to form ethene and methane. Ethene reacts with hydrogen in presence of nickel (Ni) catalyst at high temperature to form ethene

Two organic reactions are given below: (a) Identify the products A and B. (b) Which type of reaction is (i)? (c) The product B has industrial values. Give its name and use.

(a) Product A is CH 2 Cl 2 and B is ( C 2 H 3 Cl ) n . (b) It is a substitution reaction. Reactions in which an atom or a group in a compound is replaced by another atom or a group are called substitution reactions. (c) Product B is Polyvinyl chloride (PVC), it is a thermoplastic and it is commonly used for making pipes.

Polymers are high molecular mass macromolecules, which are formed by repeating structural units derived from monomers. Polymers have a high molecular mass usually ranging between 10 3 - 10 7 u . In a polymer, various monomer units are joined by strong covalent bonds. Polymers can be natural as well as synthetic. Some examples of polymers are Nylon 6, Teflon and Polythene.

MEDIUM

Earn 100

Define thermal cracking.

Important Questions on Chemical Reactions of Organic Compounds

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Match columns A, B, and C suitably.

A Reactants	B Products	C Name of Reaction
${CH}_{4} + {Cl}_{2}$	${CO}_{2} + 2 H_{2} O$	Addition
${CH}_{4} + 2 O_{2}$	${CH}_{2} = {CH}_{2}$	Thermal cracking
$CH 3 - {CH}_{2} - {CH}_{3}$	${CH}_{3} Cl + HCl$	Combustion
$CH \equiv CH + H_{2}$	${CH}_{2} = {CH}_{2} + {CH}_{4}$	Substitution

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Organic compounds are obtained through different chemical reactions.

Complete the following reaction:

${CH}_{3} - CH = CH - {CH}_{3} + HI \to$

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Two organic reactions are given below:

Question Image

(a) Identify the products A and B.

(b) Which type of reaction is (i)?

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Organic compounds are obtained through different chemical reactions.

What is the difference between substitution reactions and addition reactions?

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Which of the following molecule can undergo addition reaction?

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Organic compounds are obtained through different chemical reactions.

Complete the following reaction:

${CH}_{3} - {CH}_{3} + {Cl}_{2} \to_____+ HCl$

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Discuss the stereochemistry of the reduction products obtained when but-2-yne is reduced with Lindlar’s catalyst and

Na

in liquid

{NH}_{3}

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Write short note on combustion.

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Write short note on the addition reactions.

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Chlorine reacts with saturated hydrocarbons at room temperature in the :

HARD

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Give a chemical test to distinguish between ethane and ethene.

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Explain the terms polymer and monomer.

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Describe any two examples of combustion.

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

A mixture of oxygen and ethyne is burnt for welding. Can you tell why a mixture of ethyne and air is not used?

HARD

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

How does methane react with the chlorine, oxygen.

HARD

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Write the name and general formula of a chain of hydrocarbons in which an addition reaction with hydrogen can take place. Stating the essential conditions required for an addition reaction to occur, write the chemical equation giving the name of the reactant and the product of such a reaction.

EASY

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Define the term polymerisation.

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

Give a test that can be used to differentiate between saturated and unsaturated hydrocarbons.

MEDIUM

Science>Chemistry>Chemical Reactions of Organic Compounds>Organic Reactions

What are polymers?

Define thermal cracking.

Important Questions on Chemical Reactions of Organic Compounds

Learn and Prepare for any exam you want !