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100+ Free Tamil Nadu HSE First Year Computer Science Practice Questions

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

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2026 Statistics

Key Facts: Tamil Nadu HSE First Year Computer Science Exam

10:00–1:15

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

DGE TN 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

Class 11

Samacheer Kalvi / SCERT Higher Secondary First Year Computer Science syllabus depth (not +2 OOP/DBMS)

SCERT Tamil Nadu Class 11 Computer Science textbooks

Arrear 2026

March 2026 HSE+1 public sitting listed for 2018–2025 arrear candidates only

DGE TN official timetable PDF

DGE TN

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

dge.tn.gov.in

ta, en

Official pathway languages include Tamil and English for this subject registration

OpenExamPrep taxonomy officialLanguages for in-tn-hse1-computer-science

English MCQ bank

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

OpenExamPrep practice-content policy

₹200 band

School exam fee band for groups with practical subjects plus certificate/service charges (concessions apply)

DGE HSE_E.pdf school candidate fee table

Free English MCQ practice for Tamil Nadu HSE +1 Computer Science (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 Computer Science Practice Questions

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

1Which number system uses only the digits 0 and 1?
A.Decimal
B.Binary
C.Octal
D.Hexadecimal
Explanation: Binary (base 2) uses only digits 0 and 1. It is the native representation used by digital computers.
2What is the decimal equivalent of the binary number 1011₂?
A.9
B.10
C.11
D.13
Explanation: 1×2³ + 0×2² + 1×2¹ + 1×2⁰ = 8 + 0 + 2 + 1 = 11.
3How many unique symbols (digits) does the hexadecimal number system use?
A.8
B.10
C.16
D.2
Explanation: Hexadecimal is base 16, so it uses 16 symbols: 0–9 and A–F.
4What is the octal equivalent of decimal 10?
A.10₈
B.12₈
C.11₈
D.8₈
Explanation: 10 ÷ 8 gives quotient 1 and remainder 2; writing remainders as digits yields 12₈. Check: 1×8 + 2 = 10₁₀.
5Which binary value equals hexadecimal A₁₆?
A.1001₂
B.1010₂
C.1100₂
D.1111₂
Explanation: A₁₆ = 10₁₀ = 8+2 = 1010₂. Each hex digit maps to 4 binary bits.
6What is 1’s complement of the 8-bit binary number 01011010?
A.10100101
B.10100110
C.01011010
D.11011010
Explanation: 1’s complement flips every bit: 0↔1, so 01011010 becomes 10100101.
72’s complement of an n-bit number is obtained by:
A.Inverting all bits only
B.Inverting all bits and adding 1
C.Adding 1 then inverting bits
D.Reversing the bit order
Explanation: 2’s complement = 1’s complement + 1 (invert all bits, then add 1). It is the standard signed integer representation in computers.
8Convert binary 1101₂ to decimal using place values.
A.11
B.12
C.13
D.14
Explanation: Expand place values 8, 4, 2, 1 for bits 1,1,0,1: 8+4+0+1 = 13 in decimal.
9In positional notation, the weight of the rightmost digit in base b is always:
A.b
B.0
C.b⁰ = 1
D.bⁿ
Explanation: The least significant digit has weight b⁰ = 1 in any base b.
10What is the binary equivalent of decimal 25?
A.11001₂
B.11010₂
C.10101₂
D.11101₂
Explanation: 25 = 16+8+1, which are 2⁴, 2³, and 2⁰, so the binary bits are 11001₂.

About the Tamil Nadu HSE First Year Computer Science Practice Questions

Verified exam format metadata for Tamil Nadu Higher Secondary First Year (HSE +1 / Class 11) Computer Science 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.