PracticeVideosBlogFlashcardsEspañol
All Practice Exams

100+ Free Tamil Nadu HSE First Year Biochemistry Practice Questions

Tamil Nadu Higher Secondary First Year (HSE +1 / Class 11) Bio-Chemistry under the Directorate of Government Examinations (DGE), Tamil Nadu practice questions are available now; exam metadata is being verified.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately
100+ Questions
100% Free

Loading practice questions...

Same family resources

Explore More Tamil Nadu HSE First Year / Class 11 (DGE)

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

Tamil Nadu HSE First Year Accountancy (DGE)

Practice Questions

Tamil Nadu HSE First Year Advanced Language (Tamil) (DGE)

Practice Questions

Tamil Nadu HSE First Year Agricultural Science (DGE)

Practice Questions

Tamil Nadu HSE First Year Basic Automobile Engineering (DGE)

Practice Questions

Tamil Nadu HSE First Year Basic Civil Engineering (DGE)

Practice Questions

Tamil Nadu HSE First Year Basic Electrical Engineering (DGE)

Practice Questions
2026 Statistics

Key Facts: Tamil Nadu HSE First Year Biochemistry Exam

10:00–1:15

Official March 2026 HSE theory sitting window including reading/verification time (dge.tn.gov.in timetable)

DGE TN HSE March 2026 public examination timetable

35/100

Minimum pass mark per subject under the HSE new pattern, subject to theory/practical floor rules

DGE HSE_E.pdf scheme of examination

3 hours

Approximate theory writing duration after reading and particulars verification in the public exam schedule

DGE TN HSE March 2026 timetable

DGE TN

Administered by the Directorate of Government Examinations, Chennai, for Tamil Nadu State Board Higher Secondary

dge.tn.gov.in

SCERT syllabus

Class 11 textbooks and syllabus prescribed by SCERT / School Education Department (Samacheer Kalvi)

DGE HSE scheme — syllabus prescribed by SCERT/DSE

English MCQ bank

This practice set is an English-language MCQ study adaptation, not the official mixed written paper

OpenExamPrep practice-content policy

₹150/₹200

School exam fee band for groups without/with practical subjects plus certificate/service charges (concessions apply)

DGE HSE_E.pdf school candidate fee table

Class 11

HSE First Year (+1) Bio-Chemistry focuses on biomolecules, enzymes, vitamins, cell foundations, and clinical intro

Samacheer Kalvi Class 11 Biochemistry syllabus themes

Free English MCQ practice for Tamil Nadu HSE +1 Biochemistry (DGE). Official paper is mixed written theory on the Samacheer Kalvi Class 11 syllabus — this bank is a study adaptation, not a format simulation.

Sample Tamil Nadu HSE First Year Biochemistry Practice Questions

Try these sample questions to test your Tamil Nadu HSE First Year Biochemistry exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Carbohydrates are best described chemically as:
A.Hydrocarbons with only C and H
B.Polyhydroxy aldehydes or ketones and their derivatives
C.Long-chain carboxylic acids only
D.Nitrogenous bases linked to sugars only
Explanation: Classically, carbohydrates are polyhydroxy aldehydes (aldoses) or polyhydroxy ketones (ketoses) and compounds derived from them (e.g., disaccharides, polysaccharides, sugar alcohols).
2Glucose is classified as which type of monosaccharide?
A.Aldopentose
B.Ketohexose
C.Aldohexose
D.Ketopentose
Explanation: Glucose has six carbons and an aldehyde group (in open chain), so it is an aldohexose. Fructose is a ketohexose; ribose is an aldopentose.
3Which pair correctly identifies the monosaccharide units of lactose?
A.Glucose + glucose
B.Glucose + fructose
C.Glucose + galactose
D.Fructose + galactose
Explanation: Lactose (milk sugar) is a disaccharide of D-galactose and D-glucose linked by a β-1,4-glycosidic bond.
4Sucrose is a non-reducing sugar because:
A.It has free aldehyde groups on both monosaccharides
B.The anomeric carbons of both glucose and fructose are involved in the glycosidic bond
C.It contains only β-linkages
D.It is a polysaccharide
Explanation: In sucrose, the α,β-1,2 bond joins C1 of glucose to C2 of fructose, locking both anomeric carbons. Without a free hemiacetal, sucrose does not open to a free carbonyl and does not reduce Benedict’s reagent until hydrolyzed.
5The storage polysaccharide of animal tissues is mainly:
A.Cellulose
B.Starch
C.Glycogen
D.Chitin
Explanation: Glycogen is the highly branched α-glucose polymer stored mainly in liver and muscle. Starch is the plant storage polysaccharide; cellulose is structural plant fiber.
6Amylopectin differs from amylose primarily by the presence of:
A.β-1,4 linkages only
B.α-1,6 branch points in addition to α-1,4 chains
C.Peptide bonds
D.Phosphodiester bonds
Explanation: Amylose is largely linear α-1,4-linked glucose. Amylopectin has α-1,4 chains with α-1,6 branch points about every 24–30 residues.
7Which qualitative test is commonly used as a general test for carbohydrates (furfural formation)?
A.Biuret test
B.Molisch’s test
C.Salkowski test
D.Millon’s test
Explanation: Molisch’s test uses α-naphthol and concentrated sulfuric acid; carbohydrates dehydrate to furfurals that form a purple ring. Biuret and Millon’s are protein tests.
8Fructose is best classified as a:
A.Aldohexose
B.Ketohexose
C.Aldopentose
D.Deoxy sugar only
Explanation: Fructose has six carbons and a ketone group at C2 in the open-chain form, making it a ketohexose. It can still act as a reducing sugar via tautomerization in alkaline conditions.
9Epimers are monosaccharides that differ in configuration at:
A.The anomeric carbon only after cyclization
B.Exactly one chiral carbon other than the anomeric carbon (typically)
C.All chiral carbons simultaneously
D.The number of carbon atoms only
Explanation: Epimers differ at a single stereogenic carbon (e.g., glucose and galactose are C4 epimers; glucose and mannose are C2 epimers). Anomers specifically differ at the anomeric carbon of cyclic forms.
10Cellulose cannot be digested by humans mainly because humans lack enzymes that hydrolyze:
A.α-1,4 glycosidic bonds
B.β-1,4 glycosidic bonds of cellulose
C.Peptide bonds
D.Ester bonds of triglycerides
Explanation: Cellulose is a linear β-1,4-linked D-glucose polymer. Human digestive enzymes hydrolyze α-linkages of starch/glycogen but not cellulose β-1,4 bonds, so cellulose acts as dietary fiber.

About the Tamil Nadu HSE First Year Biochemistry Practice Questions

Verified exam format metadata for Tamil Nadu Higher Secondary First Year (HSE +1 / Class 11) Bio-Chemistry under the Directorate of Government Examinations (DGE), Tamil Nadu is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.