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Organic Chemistry (Level :Moderate)

Description: Online Study Material for Chemistry Covers Chemical Bonding, Chemical Reactions, Organic Chemistry, Inorganic Chemistry, Rates of Reactions for Class XI, Class XII, CBSE Chemistry, Medical Entrance Chemistry, Engineering Chemistry
Number of Questions: 25
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Tags: Chemistry Chemical Bonding Chemical Reactions Organic Chemistry Inorganic Chemistry Rates of Reactions Class XI Chemistry Class XII Chemistry CBSE Chemistry Medical Entrance Chemistry Engineering Chemistry Tetravalency of Carbon , Hybridization , P and S Bonds Hybridisation and Its Types Organic Chemistry: Some Basic Principles Organic Chemistry - Some Basic Principles and Techniques Hydrocarbons Hydrocarbon Alkanes and Cycloalkanes Alkanes
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Which of the following gases is the main constituent of cooking gas?

  1. Methane

  2. Propane

  3. Butane

  4. Ethane


Correct Option: C
Explanation:

Butane gas is the main constituent of cooking gas.

Valency of carbon in every compound is

  1. 4

  2. 5

  3. 6

  4. 3


Correct Option: A
Explanation:

Valency of carbon in every compound is 4.

The unique capacity of carbon atoms to bond together to form long chains or rings, is called:

  1. carbonisation

  2. carbonation

  3. catenation

  4. oxidation


Correct Option: C
Explanation:

The unique capacity of carbon atoms to bond together to form long chains or rings, is called catenation.

______ is a study of carbon and its compounds.

  1. Physical chemistry

  2. Organic chemistry

  3. Inorganic chemistry

  4. Bio-chemistry


Correct Option: B
Explanation:

Organic chemistry is a study of carbon and its compounds.

Compounds containing only carbon and hydrogen are called

  1. hydrocarbons

  2. carbohydrates

  3. organic compounds

  4. aromatic compounds


Correct Option: A
Explanation:

Compounds containing only carbon and hydrogen are called hydrocarbons.

Compounds with chains of carbon atoms are called

  1. aromatic compounds

  2. aliphatic compounds

  3. alkenes

  4. alkanes


Correct Option: B
Explanation:

Compounds with chains of carbon atoms are called aliphatic compounds.

Example for closed chain compound is

  1. propane

  2. cyclo propane

  3. ethane

  4. butane


Correct Option: B
Explanation:

 Example for closed chain compound is cyclo propane.

Hydrocarbons having double or triple bonds are known as

  1. saturated hydrocarbons

  2. unsaturated hydrocarbons

  3. alkenes

  4. alkynes


Correct Option: B
Explanation:

Hydrocarbons having double or triple bonds are known as unsaturated hydrocarbons. 

In _____ reaction, double or triple bonded compounds are converted into single bonded compounds.

  1. addition

  2. oxidation

  3. fermentation

  4. hydration


Correct Option: A
Explanation:

In addition reaction, double or triple bonded compounds are converted into single bonded compounds. 

CH2 = CH2 belongs to the ____________ group of compounds.

  1. alkane

  2. alkyne

  3. alkene

  4. none of these


Correct Option: C
Explanation:

CH2 = CH2 belongs to the alkene family.

Which organization formulates the system of naming organic compounds?

  1. IUPAC

  2. IPUAC

  3. ICUAP

  4. IAPAC


Correct Option: A
Explanation:

The International Union of Pure and Applied Chemistry (IUPAC) organization formulates the system of naming organic compounds.

The family of organic compounds which shows similar properties is called _________.

  1. isomers

  2. polymers

  3. hydrocarbons

  4. homologous series


Correct Option: D
Explanation:

The family of organic compounds which shows similar properties is called homologous series.

The general formula of alkane is

  1. Cn H2n+2

  2. Cn H2n

  3. Cn H2n-2

  4. Cn H2n-4


Correct Option: A
Explanation:

 The general formula of alkane is CnH2n+2.

The compounds containing the same molecular formula, but different structural formula are called

  1. polymers

  2. isomers

  3. hydrocarbons

  4. homologous


Correct Option: B
Explanation:

The compounds containing the same molecular formula, but different structural formula are called isomers.

_______ compounds are ring compounds with at least one cyclic ring.

  1. Aromatic

  2. Aliphatic

  3. Alkenes

  4. Cyclic


Correct Option: A
Explanation:

Aromatic compounds are ring compounds with at least one cyclic ring.

Molecular formula of butyne is

  1. C4H6

  2. CH3

  3. CH2

  4. C6H6


Correct Option: A
Explanation:

Molecular formula of butyne is C4H6.

The alkane members differ by

  1. CH3

  2. Cn H2n

  3. C6H3

  4. CH2


Correct Option: D
Explanation:

The alkane members differ by CH2.

Which of the following gases is used for artificial ripening of fruits?

  1. Ethene

  2. Ethane

  3. Methane

  4. Butane


Correct Option: A
Explanation:

Ethene gas is used for artificial ripening of fruits.

Molecular formula of methane is

  1. C4H6

  2. CH4

  3. CH2

  4. C6H6


Correct Option: B
Explanation:

Molecular formula of methane is CH4.

Which of the following compounds is an unsaturated hydrocarbon?

  1. Ethene

  2. Ethane

  3. Methane

  4. Butane


Correct Option: A
Explanation:

Ethene is an unsaturated hydrocarbon.

In the manufacture of methane, sodium hydroxide is treated with

  1. ethanol

  2. sodium carbonate

  3. sodium ethanoate

  4. sodium proponate


Correct Option: C
Explanation:

In the manufacture of methane, sodium hydroxide is treated with sodium ethanoate.

In alkenes, the molecular weight increases and the boiling point

  1. increases

  2. decreases

  3. shows no change

  4. None of these


Correct Option: A
Explanation:

In alkenes, the molecular weight increases and the boiling point increases.

The general formula of alkyne is

  1. Cn H2n+2

  2. Cn H2n

  3. Cn H2n-2

  4. Cn H2n-4


Correct Option: C
Explanation:

The general formula of alkyne is CH2n-2.

Example for alkane is

  1. ethane

  2. ethene

  3. ethyne

  4. all of these


Correct Option: A
Explanation:

Example for alkane is ethane.

Methane family is also known as

  1. ethene

  2. petroleum

  3. acetelene

  4. None of these


Correct Option: B
Explanation:

Methane family is also known as petroleum.

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