Match List - I with List - II . table width: 100%; border-collapse: collapse; table, th, td border: 1px solid black; th, td padding: 10px; text-align: center; th background-color: blue; color: white; List I (Number) List II (Significant figure) (A) 1001 (I) 3 (B) 010.1 (II) 4 (C) 100.100 (III) 5 (D) 0.0010010 (IV) 6 Choose the correct answer from the options given below :

(A)-(II), (B)-(I), (C)-(IV), (D)-(III)

(A)-(IV), (B)-(III), (C)-(I), (D)-(II)

(A)-(I), (B)-(II), (C)-(III), (D)-(IV)

(A)-(III), (B)-(IV), (C)-(II), (D)-(I)

Units and Measurements PYQ — JEE Main 2024 · 1 Feb · Shift 2 · Q66 with Solution

Match List - I with List - II.

Choose the correct answer from the options given below :

View written solutionFree

Correct answer: A

Rules for significant figures
- All non-zero digits are significant.
- Zeros between non-zero digits are significant.
- Leading zeros are not significant.
- Trailing zeros to the right of a decimal are significant.
Count significant figures in each number

(A) $1001$
- The two zeros are between non-zero digits.
- So all digits are significant.
- Significant figures $= 4$ .
- Hence, $(A) \to (II)$ .
(B) $010.1$
- The initial zero is a leading zero, so it is not significant.
- Digits counted: $1,0,1$ .
- The zero is between non-zero digits, so it is significant.
- Significant figures $= 3$ .
- Hence, $(B) \to (I)$ .
(C) $100.100$
- In a decimal number, zeros between non-zero digits are significant.
- Also, trailing zeros to the right of decimal are significant.
- Digits: $1,0,0,1,0,0$ are all significant.
- Significant figures $= 6$ .
- Hence, $(C) \to (IV)$ .
(D) $0.0010010$
- Leading zeros before the first non-zero digit are not significant.
- After the first non-zero digit, zeros between non-zero digits are significant.
- The final zero is to the right of decimal and after a non-zero digit, so it is significant.
- Significant digits counted: $1,0,0,1,0$ .
- Significant figures $= 5$ .
- Hence, $(D) \to (III)$ .
Final matching
$(A)-(II),\quad (B)-(I),\quad (C)-(IV),\quad (D)-(III)$
Compare with options

This corresponds to Option A.
Comparison with stored correct answer
- Derived answer: A
- Stored correct answer: A
- They agree.

Match List - I with List - II.

Choose the correct answer from the options given below :

View written solutionFree

Correct answer: A

Rules for significant figures
- All non-zero digits are significant.
- Zeros between non-zero digits are significant.
- Leading zeros are not significant.
- Trailing zeros to the right of a decimal are significant.
Count significant figures in each number

(A) $1001$
- The two zeros are between non-zero digits.
- So all digits are significant.
- Significant figures $= 4$ .
- Hence, $(A) \to (II)$ .
(B) $010.1$
- The initial zero is a leading zero, so it is not significant.
- Digits counted: $1,0,1$ .
- The zero is between non-zero digits, so it is significant.
- Significant figures $= 3$ .
- Hence, $(B) \to (I)$ .
(C) $100.100$
- In a decimal number, zeros between non-zero digits are significant.
- Also, trailing zeros to the right of decimal are significant.
- Digits: $1,0,0,1,0,0$ are all significant.
- Significant figures $= 6$ .
- Hence, $(C) \to (IV)$ .
(D) $0.0010010$
- Leading zeros before the first non-zero digit are not significant.
- After the first non-zero digit, zeros between non-zero digits are significant.
- The final zero is to the right of decimal and after a non-zero digit, so it is significant.
- Significant digits counted: $1,0,0,1,0$ .
- Significant figures $= 5$ .
- Hence, $(D) \to (III)$ .
Final matching
$(A)-(II),\quad (B)-(I),\quad (C)-(IV),\quad (D)-(III)$
Compare with options

This corresponds to Option A.
Comparison with stored correct answer
- Derived answer: A
- Stored correct answer: A
- They agree.