Chapter Exam

Chapter-1 Advanced Number Systems — Online MCQ Test

Q: What is the base of the binary number system?

Answer: A. 2 — The binary number system uses only two digits (0 and 1), making its base 2.

Q: How many bits are there in one byte?

Answer: B. 8 bits — A byte is the standard unit of digital information consisting of 8 bits.

Q: How many bits are required to represent one hexadecimal digit?

Answer: B. 4 bits — One hexadecimal digit can be represented using 4 bits because 2⁴ = 16 (hexadecimal base).

Q: What is the binary equivalent of the hexadecimal number A5?

Answer: B. 10100101 — A (hex) = 1010 (binary), 5 (hex) = 0101 (binary). Therefore, A5 (hex) = 10100101 (binary).

Q: What will be the binary representation of -5 if we use signed magnitude representation with 8 bits?

Answer: A. 10000101 — In signed magnitude representation, the leftmost bit is the sign bit (1 for negative). +5 is 00000101, so -5 is 10000101.

INFORMATION TECHNOLOGY · Grade 7 · CBSE(NCERT)

Practice Chapter-1 Advanced Number Systems with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 7 INFORMATION TECHNOLOGY. This chapter covers: binary - decimal - octal - hexadecimal - base conversion - bits - bytes - computer arithmetic. AI-generated questions from basic to board-exam level, with instant results and explanations.

Questions

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10 random questions from this chapter (mixed difficulty)
Questions you've seen before won't repeat until the pool resets
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Chapter-1 Advanced Number Systems — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 7 INFORMATION TECHNOLOGY — Chapter-1 Advanced Number Systems, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is the base of the binary number system?

A. 2 ✓
B. 8
C. 10
D. 16

Answer: A. 2
The binary number system uses only two digits (0 and 1), making its base 2.

How many bits are there in one byte?

A. 4 bits
B. 8 bits ✓
C. 16 bits
D. 32 bits

Answer: B. 8 bits
A byte is the standard unit of digital information consisting of 8 bits.

How many bits are required to represent one hexadecimal digit?

A. 2 bits
B. 4 bits ✓
C. 8 bits
D. 16 bits

Answer: B. 4 bits
One hexadecimal digit can be represented using 4 bits because 2⁴ = 16 (hexadecimal base).

What is the binary equivalent of the hexadecimal number A5?

A. 10100011
B. 10100101 ✓
C. 10110101
D. 11010101

Answer: B. 10100101
A (hex) = 1010 (binary), 5 (hex) = 0101 (binary). Therefore, A5 (hex) = 10100101 (binary).

What will be the binary representation of -5 if we use signed magnitude representation with 8 bits?

A. 10000101 ✓
B. 10000100
C. 11000101
D. 01000101

Answer: A. 10000101
In signed magnitude representation, the leftmost bit is the sign bit (1 for negative). +5 is 00000101, so -5 is 10000101.

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