MCQ on Carbohydrate Basics

 

Question 1: The general formula of carbohydrates is:

A) CnH2nOn

B) CnH2n+2On

C) CnH2n-2On

D) CnH2nO2

Explanation: Most carbohydrates follow the empirical formula (CH2O)n, meaning the ratio of hydrogen to oxygen is 2:1, similar to water. Hence, CnH2nOn.

Question 2: Which of the following is an aldose sugar?

A) Fructose

B) Sucrose

C) Starch

D) Glucose

Explanation: Glucose contains an aldehyde group in its open-chain form, making it an aldose. Fructose and ribulose are ketoses.

Question 3: What is the largest planet in our solar system?

A) Jupiter

B) Earth

C) Mars

D) Venus

Explanation: Jupiter is the largest planet in our solar system.

Question 4: Which gas do plants absorb from the atmosphere?

A) Carbon dioxide

B) Oxygen

C) Nitrogen

D) Hydrogen

Explanation: Plants absorb carbon dioxide from the atmosphere.

Question 5: What is the largest mammal in the world?

A) Blue whale

B) African elephant

C) Giraffe

D) Lion

Explanation: The blue whale is the largest mammal in the world.

Question 6: What is the largest mammal in the world?

A) Blue whale

B) African elephant

C) Giraffe

D) Lion

Explanation: The blue whale is the largest mammal in the world.

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