CBSE Worksheet for chapter-6 Sources of Energy class 10
Worksheet For class 10
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Nuclear Fission – Fission products, Types of fission reactions, Process of nuclear fission
Nuclear Fusion - Sun’s energy and hydrogen Bomb
Section 1 - Objective
Q1. The device in which the nuclear fission and release of energy is controlled, is known as:
- Nuclear reactor
- Cloud chamber
Q2. For a sustained chain reaction, the reproduction factor should be:
Q3. Moderator is used in nuclear reactor for:
- Slowing neutrons
- Accelerating neutrons
- Sttopping neutrons
- Heating the neutrons
Q4. The fusion reaction occur at:
- Low pressures
- Low temperature
- Extremely high temperature
- High temperature and low pressures
Q5. The source of energy of the sun:
- Nuclear fission
- Chemical reaction
- Nuclear fusion
- None of these
Q6. The number of neutrons in an atom X of atomic number Z and mass number A is :
Q7. When a beta particle is given out, the atomic number of the parent atom:
- Increases by unity
- Decreases by unity
- Remains the same
- Is halved
Q8. Which of the following has least penetrating power?
- Alpha particles
- Gamma rays
- Beta particles
- All have the same penetrating power
SECTION 2 – SUBJECTIVE
Q1. Differentiate between nuclear fission and nuclear fusion.
Q2. Define nuclear fusion reaction. Describe the conditions for the occurrence of a nuclear fusion reaction.
Q3. XRnY--86Po218 + alpha- particles. Find X And Y.
Q4. Name the two major components present in the left-over slurry of a biogas plant.
Q5. Why is charcoal considered to be a better fuel than wood?
Q6. Stae any three characteristics of a good source of energy. Name the gaseous fuel which has the highest calorific value.
Q7. Out of the two elements A and B with mass number 2 and 235 respectively, which one is suitable for making:
(a) a nuclear reactor
(b) a hydrogen bomb
Q8. Name the nuclear reaction involved in each case. Write one difference between the two types nuclear reactions.
Solutions for Section 1 & 2
|1. (C)||2. (B)||3. (A)||4. (C)||5. (C)||6. (C)||7. (A)||8. (A)|
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