Biomolecules
Maharashtra Board · Class 12 · Chemistry
Flashcards for Biomolecules — Maharashtra Board Class 12 Chemistry. Quick Q&A cards covering key concepts, definitions, and formulas.
Interactive on Super Tutor
Studying Biomolecules? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for flashcards and more.
1,000+ Class 12 students started this chapter today
Define carbohydrates and give their general molecular formula representation.
Answer
Carbohydrates are polyhydroxy aldehydes or ketones or compounds which give rise to such units on hydrolysis. They are also called saccharides (Greek word 'sakkharon' means sugar). General formula: Cx(…
How are carbohydrates classified based on their hydrolysis behavior?
Answer
Carbohydrates are classified into three groups: 1) Monosaccharides - do not hydrolyze further (glucose, fructose) 2) Oligosaccharides - yield 2-10 monosaccharide units on hydrolysis (sucrose, maltose,…
What is the IUPAC nomenclature system for monosaccharides? Give examples.
Answer
General name: Glycose. Aldose = contains aldehydic carbonyl group (-CHO). Ketose = contains ketonic carbonyl group (C=O). Names modified by number of carbons: Glucose (C6H12O6) = aldohexose (6C aldose…
Write the chemical equation for preparation of glucose from sucrose.
Answer
C12H22O11 + H2O → C6H12O6 + C6H12O6 (Sucrose) + H⁺, Δ → (Glucose) + (Fructose) Method: Sucrose is hydrolyzed by warming with dilute HCl or H2SO4 for 2 hours. Glucose crystallizes out first when ethan…
How many chiral carbons are present in glucose? What is the significance of this?
Answer
Glucose has 4 chiral carbons (C-2, C-3, C-4, C-5). Significance: With n chiral carbons, maximum 2ⁿ optical isomers are possible. For aldohexose: 2⁴ = 16 optical isomers possible. Glucose is one of the…
Explain the ring structure of glucose and the concept of anomers.
Answer
Glucose exists in cyclic form due to reaction between -CHO group and -OH group at C-5, forming hemiacetal. This creates two ring structures (α and β anomers) that differ in configuration of C-1 (anome…
Why does glucose give positive Tollens test and Fehling test?
Answer
Glucose gives positive Tollens and Fehling tests because it has a hemiacetal group in its ring structure, which is a potential aldehyde group. The hemiacetal can open to form the free aldehyde group (…
Write the hydrolysis equation of sucrose and explain why it's called 'inversion of sucrose'.
Answer
C12H22O11 + H2O → C6H12O6 + C6H12O6 (Sucrose) + H⁺/invertase → (D-(+)glucose) + (D-(-)fructose) [α]D²⁰ = +66.5° → [α]D²⁰ = +52.7° + [α]D²⁰ = -92.4° Called 'inversion' because: Sucrose is dextrorotato…
+12 more flashcards available
Practice AllFrequently Asked Questions
What are the important topics in Biomolecules for Maharashtra Board Class 12 Chemistry?
How to score full marks in Biomolecules — Maharashtra Board Class 12 Chemistry?
How many flashcards are available for Biomolecules?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Biomolecules
Practice Quiz
Test yourself with a quick quiz
Important Questions
Practice with board exam-style questions
Revision Notes
Key points for last-minute revision
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Concept Maps
See how topics connect visually
Study Plan
Step-by-step plan to ace this chapter
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Biomolecules chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for Maharashtra Board Class 12 Chemistry.