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Organic Chemistry Basics MCQs with Answers

Organic Chemistry Basics MCQs

Welcome to the Organic Chemistry Basics MCQs with Answers. In this post, we are sharing Organic Chemistry Basics Multiple Choice Questions and Answers in Everyday Science section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Organic Chemistry Basics online MCQs Test.

Organic chemistry is the branch of chemistry that deals with the study of:
a) Inorganic compounds
b) Organic compounds
c) Both inorganic and organic compounds
d) None of the above

Answer
b) Organic compounds

Which element is present in all organic compounds?
a) Carbon
b) Oxygen
c) Hydrogen
d) Nitrogen

Answer
a) Carbon

How many valence electrons does a carbon atom have?
a) 2
b) 4
c) 6
d) 8

Answer
b) 4

What is the hybridization of a carbon atom in methane (CH4)?
a) sp
b) sp2
c) sp3
d) sp3d

Answer
c) sp3

Which bond is formed between two carbon atoms in an organic compound?
a) Sigma bond
b) Pi bond
c) Double bond
d) Triple bond

Answer
a) Sigma bond

What is the general formula for an alkane?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
b) CnH2n+2

Which functional group contains a carbon-oxygen double bond?
a) Alcohol
b) Aldehyde
c) Carboxylic acid
d) Ketone

Answer
d) Ketone

What is the general formula for an alkene?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
a) CnH2n

Which functional group contains a hydroxyl group (-OH)?
a) Alcohol
b) Aldehyde
c) Carboxylic acid
d) Ketone

Answer
a) Alcohol

What is the general formula for an alkyne?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
a) CnH2n

Which functional group contains a carbonyl group (C=O)?
a) Alcohol
b) Aldehyde
c) Carboxylic acid
d) Ketone

Answer
d) Ketone

What is the general formula for an alcohol?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
a) CnH2n+2

Which functional group contains a carboxyl group (-COOH)?
a) Alcohol
b) Aldehyde
c) Carboxylic acid
d) Ketone

Answer
c) Carboxylic acid

What is the general formula for an aldehyde?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
b) CnH2n

Which functional group contains a carbonyl group at the end of a carbon chain?
a) Alcohol
b) Aldehyde
c) Carboxylic acid
d) Ketone

Answer
b) Aldehyde

What is the general formula for a carboxylic acid?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains an amino group (-NH2)?
a) Alcohol
b) Aldehyde
c) Amine
d) Ketone

Answer
c) Amine

What is the general formula for an amine?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
c) CnHn

Which functional group contains a nitrogen atom bonded to three carbon atoms?
a) Alcohol
b) Aldehyde
c) Amine
d) Ketone

Answer
c) Amine

What is the general formula for a ketone?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
a) CnH2n

Which functional group contains a nitrogen atom bonded to two carbon atoms?
a) Alcohol
b) Aldehyde
c) Amine
d) Ketone

Answer
c) Amine

What is the general formula for an ether?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains an oxygen atom bonded to two carbon atoms?
a) Alcohol
b) Aldehyde
c) Ether
d) Ketone

Answer
c) Ether

What is the general formula for an ester?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains an oxygen atom bonded to a carbon atom by a double bond and to another carbon atom by a single bond?
a) Alcohol
b) Aldehyde
c) Ester
d) Ether

Answer
c) Ester

What is the general formula for an amide?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a nitrogen atom bonded to a carbon atom by a double bond and to another carbon atom by a single bond?
a) Alcohol
b) Aldehyde
c) Amide
d) Amine

Answer
c) Amide

What is the general formula for a nitrile?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
a) CnH2n

Which functional group contains a carbon atom triple-bonded to a nitrogen atom?
a) Alcohol
b) Aldehyde
c) Amide
d) Nitrile

Answer
d) Nitrile

What is the general formula for a thiol?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
a) CnH2n

Which functional group contains a sulfur atom bonded to a carbon atom by a single bond?
a) Alcohol
b) Aldehyde
c) Thiol
d) Ether

Answer
c) Thiol

What is the general formula for a sulfide?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a sulfur atom bonded to two carbon atoms?
a) Alcohol
b) Aldehyde
c) Sulfide
d) Thiol

Answer
c) Sulfide

What is the general formula for an acyl halide?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a carbonyl group (-C=O) bonded to a halogen atom?
a) Alcohol
b) Aldehyde
c) Acyl halide
d) Ketone

Answer
c) Acyl halide

What is the general formula for an anhydride?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains two carbonyl groups (-C=O) bonded to an oxygen atom?
a) Alcohol
b) Aldehyde
c) Anhydride
d) Ether

Answer
c) Anhydride

What is the general formula for a vinyl halide?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
b) CnH2n

Which functional group contains a carbon-carbon double bond and a halogen atom?
a) Alcohol
b) Aldehyde
c) Vinyl halide
d) Ether

Answer
c) Vinyl halide

What is the general formula for an alkyl halide?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a halogen atom bonded to a carbon atom?
a) Alcohol
b) Aldehyde
c) Alkyl halide
d) Ether

Answer
c) Alkyl halide

What is the general formula for a tosylate?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a sulfonic acid group (-SO3H) bonded to a carbon atom?
a) Alcohol
b) Aldehyde
c) Tosylate
d) Ether

Answer
c) Tosylate

What is the general formula for a sulfonate?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a sulfonic acid group (-SO3H)?
a) Alcohol
b) Aldehyde
c) Sulfonate
d) Ether

Answer
c) Sulfonate

What is the general formula for a phosphate ester?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a phosphate group (-PO4) bonded to a carbon atom?
a) Alcohol
b) Aldehyde
c) Phosphate ester
d) Ether

Answer
c) Phosphate ester

What is the general formula for a carbamate?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains an amine group bonded to a carbonyl group (-NHCOO-)?
a) Alcohol
b) Aldehyde
c) Carbamate
d) Ether

Answer
c) Carbamate

What is the general formula for a carbonate ester?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
d) CnHn+2

Which functional group contains a carbonate group (-O(C=O)O-) bonded to a carbon atom?
a) Alcohol
b) Aldehyde
c) Carbonate ester
d) Ether

Answer
c) Carbonate ester

What is the general formula for an imine?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
b) CnH2n

Which functional group contains a nitrogen atom bonded to a carbon atom by a double bond?
a) Alcohol
b) Aldehyde
c) Imine
d) Ether

Answer
c) Imine

What is the general formula for a nitro compound?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
a) CnH2n

Which functional group contains a nitrogen atom bonded to an oxygen atom by a double bond and to another oxygen atom by a single bond?
a) Alcohol
b) Aldehyde
c) Nitro compound
d) Ether

Answer
c) Nitro compound

What is the general formula for a diazo compound?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
b) CnH2n

Which functional group contains a nitrogen atom bonded to two carbon atoms, one of which is a part of a double bond?
a) Alcohol
b) Aldehyde
c) Diazo compound
d) Ether

Answer
c) Diazo compound

What is the general formula for an azide?
a) CnH2n
b) CnH2n+2
c) CnHn
d) CnHn+2

Answer
b) CnH2n

Which functional group contains a nitrogen atom bonded to three other nitrogen atoms?
a) Alcohol
b) Aldehyde
c) Azide
d) Ether

Answer
c) Azide

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