Download App

Sources of Energy — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceSources of Energy5 Marks
Question
A nuclear reaction is represented by the equation:$^{2}_{1}\text{H}+{^{2}_{1}\text{H}}\rightarrow{^{3}_{2}\text{He}}+\text{xc}+\text{E}$
  1. Name the process represented by this equation and describe what happens during this reaction.
  2. Identify the particle c and the number x of such particles produced in the reaction.
  3. What does E represent?
  4. State two conditions under which such a reaction takes place.
  5. What type of nuclear bomb is based on similar reactions?
✓

Answer

  1. Nuclear fusion; two smaller nuclei combine to form a bigger nucleus with the release of energy, brought about under the conditions of high temperature and pressure.
  2. Particle c is neutron; x= 1
  3. Energy liberated.
  4. Millions of degree of temperature and millions of pascals of pressure.
  5. Hydrogen bomb.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following questions: [5 M]" from Sources of Energy→Sources of Energy — all question types→Science STD 10 question papers→Maharashtra Board STD 10 question papers→Maharashtra Board question paper generator→

Similar questions

What is an electric motor? With the help of a labelled diagram, describe the working of a simple electric motor.
→
Draw a figure explaining various terms related to a lens.
→
Explain the following with the help of a diagram :
Myopia or Nearsightedness
→
A 5V battery is connected to two $20 Ω$ resistors which are joined together in series.
  1. Draw a circuit diagram to represent this. Add an arrow to indicate the direction of conventional current flow in the circuit.
  2. What is the effective resistance of the two resistors?
  3. Calculate the current that flows from the battery.
  4. What is the p.d. across each resistor?
→
How does the nuclear fission process takes place in the nuclear power plant?
→
The top part A of the flask-shaped reproductive organ X in the flower of a plant secrets a surgery substance into its lower part B which goes towards the bottom part C of the flask-shaped organ. When a tiny grain D coming from the top part E of another reproductive organ Y i the flower falls on part A, it grows a long tube F through the organ X i response to the sugary substance and reaches the bottom part C of flask-shaped organ to carry out fertilisation.
  1. Name parts (i) organ X, and (ii) organ Y, inside the flower?
  2. Name parts (i) A (ii) B, and (iii) C, of flask-shaped organ.
  3. Name (i) grain D, and (ii) part E of organ Y.
  4. Name the tube F.
  5. What is the phenomenon of growing a long tube in response to sugary substance in the process of fertilisation in a flower known as?
→
Read the passage and answer the questions based on it.
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat-resistant box then no energy can flow from inside the box or come into the box. In this situation, we get the following principle.
Heat energy lost by the hot object = Heat energy gained by the cold object. This is called the ‘Principle of heat exchange’.
  1. Where does heat transfer take place?
  2. In such a situation which principle of heat do you perceive?
  3. How can this principle be explained in short?
  4. Which property of the substance is measured using this principle?
→
A red-brown metal $X$ forms a salt $XSO_4$. When hydrogen sulphide gas is passed through an aqueous solution of $XSO_4,$ then a black precipitate of $XS$ is formed alongwith sulphuric acid solution.
  1. What could the salt $XSO_4$ be?
  2. What is the colour of salt $XSO_4?$
  3. Name the black precipitate $XS.$
  4. By using the formula of the salt obtained in $(a)$ above, write an equation of the reaction which takes place when hydrogen sulphide gas is passed through its aqueous solution.
  5. What type of chemical reaction takes place in this case?
→
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment?
→
The mass and weight of an object on earth are 5 kg and 49 N respectively. What will be their values on the moon? Assume that the acceleration due to gravity on the moon is 1/6th of that on the earth
→