✓ 3 MARKS
Short Answer
🔥 APPEARED IN 3 BOARD SETS
(a) Differentiate between nuclear fission and fusion. (b) The fission properties of ${}_{94}\text{Pu}^{239}$ are very similar to those of ${}_{92}\text{U}^{235}$. How much energy (in MeV), is released if all the atoms in 1 g of pure ${}_{94}\text{Pu}^{239}$ undergo fission ? The average energy released per fission is 180 MeV.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2024 | Series Other | Set 1 | Question 22 |
| CBSE 2024 | Series Other | Set 1 | Question 24 |
| CBSE 2024 | Series Other | Set 1 | Question 28 |
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)