✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
Which of the following elements exhibits maximum number of oxidation states ?
A
Scandium
B
Zinc
C
Manganese
D
Cobalt
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 56-7 | Set 1 | Question 2 |
| CBSE 2026 | Series 56-7 | Set 2 | Question 3 |
| CBSE 2026 | Series 56-7 | Set 3 | Question 11 |
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)