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Important Questions

Biomolecules

ICSE · Class 12 · Chemistry

Most important questions from Biomolecules for ICSE Class 12 Chemistry board exam 2026. MCQs, short answer, and long answer questions with marks.

104 questions42 flashcards5 concepts

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104 Questions·
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Sample Questions

1multiple choice

DNA contains which of the following sugar?

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Deoxyribose

DNA contains deoxyribose (2-deoxyribose) as the pentose sugar. RNA contains ribose.

2multiple choice

The bond between amino acids in a protein is called:

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Peptide bond

Peptide bond (-CO-NH-) links amino acids. Glycosidic bonds link sugars; phosphodiester links nucleotides in DNA/RNA.

3multiple choice

Starch turns which colour with iodine solution?

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Blue-black

Starch gives a characteristic blue-black colour with iodine. Glycogen gives red-brown. This is a diagnostic test for starch.

4multiple choice

Which vitamin deficiency causes rickets in children?

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Vitamin D

Vitamin D (calciferol) deficiency causes rickets in children (soft and deformed bones) and osteomalacia in adults.

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Frequently Asked Questions

What are the important topics in Biomolecules for ICSE Class 12 Chemistry?
Key topics in Biomolecules include Classification of Carbohydrates – Complete Overview, Comprehensive Classification of Biomolecules, Comprehensive Biomolecules Classification and Structure. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Biomolecules — ICSE Class 12 Chemistry?
Understand the core concepts first, then work through the 104 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Biomolecules?
There are 104 practice questions available for Biomolecules. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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