✓ 2 MARKS
Reasoning / Why
🔥 APPEARED IN 3 BOARD SETS
What is meant by essential amino acids ? Why are amino acids amphoteric in nature ?
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2025 | Series 56-4 | Set 1 | Question 21 |
| CBSE 2025 | Series 56-4 | Set 2 | Question 17 |
| CBSE 2025 | Series 56-4 | Set 3 | Question 17 |
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)