NCERT Class 12 Chemistry Chapter 5 Biomolecules Test Mock Test
This free online test covers Chapter 5, Biomolecules, from the NCERT Class 12 Chemistry-II textbook. The 30 questions are written directly from the chapter — definitions, processes, worked examples and the points the book italicises — so a score here tells you how much of the chapter actually stuck, not how well you guess. Each answer carries an explanation that says why the right option is right and why the other three fail, which is where most of the learning happens. Attempt it after your first read of the chapter, then again before the exam. There is no negative marking, and you can review the full solution the moment you submit.
Duration
30 mins
Questions
30 MCQs
Total Marks
30 pts
Negative
0 per wrong
Topics Covered in This Paper
Sample Questions
Q1.Carbohydrates are defined chemically as:
- AAny compound whose molecular formula fits the general pattern Cx(H2O)y
- BOptically active polyhydroxy aldehydes or ketones, or compounds that give such units on hydrolysis
- CCompounds of carbon and water in which the two are chemically combined
- DAny sweet tasting organic compound containing oxygen
Q2.On hydrolysis, one molecule of sucrose gives one molecule each of glucose and fructose, while one molecule of maltose gives two molecules of glucose. Both are therefore classified as:
- ANon-sugars, since both are hydrolysed by dilute acid
- BDisaccharides, a sub-class of oligosaccharides, which yield two to ten monosaccharide units on hydrolysis
- CMonosaccharides, since neither can be hydrolysed to anything simpler
- DPolysaccharides, since both give more than one monosaccharide unit
Q3.Prolonged heating of glucose with hydrogen iodide gives n-hexane. This observation establishes that:
- AGlucose contains one primary alcoholic hydroxyl group
- BAll six carbon atoms of glucose are linked in a straight chain
- CGlucose contains an aldehyde group at one end of the molecule
- DGlucose contains five hydroxyl groups on different carbon atoms
Before you begin
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Each wrong answer carries -0 marks.
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Disclaimer: The questions provided here are extracted and digitized from previous year papers using automated processes. They may contain typographical errors, formatting issues, or minor variations from the actual examination paper. While we have done our best to verify the accuracy of the official answer keys, discrepancies may occasionally exist. Please refer to the official commission website for the most authentic paper.
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FAQ
Frequently asked questions
Frequently Asked Questions
- How many questions are in the NCERT Class 12 Chemistry Chapter 5 Biomolecules Test mock test?
- This paper has 30 multiple-choice questions carrying 30 marks in total, to be attempted in 30 minutes.
- Is the NCERT Class 12 Chemistry Chapter 5 Biomolecules Test mock test free to attempt?
- Yes. You can attempt the full paper online for free on AI Test Planet, and see your score and correct answers immediately after submitting.
- Does this paper have negative marking?
- No, there is no negative marking on this paper, so an attempted guess costs you nothing.
- Are solutions and explanations available?
- Yes. After you submit, every question shows the correct answer with a step-by-step explanation, along with a topic-wise breakdown of your performance.