✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
The rate of change of volume of a sphere with respect to its diameter, when its radius is $5 \text{ cm}$, is :
A
$400\pi \text{ cm}^3/\text{cm}$
B
$100\pi \text{ cm}^3/\text{cm}$
C
$50\pi \text{ cm}^3/\text{cm}$
D
$25\pi \text{ cm}^3/\text{cm}$
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 65-3 | Set 1 | Question 9 |
| CBSE 2026 | Series 65-3 | Set 2 | Question 2 |
| CBSE 2026 | Series 65-3 | Set 3 | Question 13 |
02 // OFFICIAL CBSE MARKING SCHEME BREAKDOWN
- Step 1: Stating the fundamental formula / law statement (+1 Mark)
- Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
- Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)