NIOS Class 10th Science and Technology English Medium (212) Solved Assignment (TMA) 2022-23

Science and Technology (212)

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1. Answer any one of the following questions in about 40-60 words.

(b) The car is parked in the sun by Sunil, and he completely closes the doors, and windows of the car for safety. After some time opening the doors of the car, he realizes that the temperature inside the car was higher than the temperature outside. Explain that due to which effect of heat this happened. If the car is completely covered with white cloth, then there will be any effect in the internal temperature of that car, if yes, explain the reason.

2. Answer any one of the following questions in about 40-60 words.

(a) In the winter season, fire is used as heat to escape from the cold. Due to the extreme cold, Shashi lit firewood in the room to increase the temperature of the room and closed the windows and doors of the room so that the cold outside air could not come into the room. After some time he felt suffocated. When the windows and doors of the room were opened, there was relief from suffocation. Explain exactly the main cause of event.

3. Answer anyone of the following questions in about 40-60 words.

(b) Name of scientist associated with origin of life are given below, identify one scientist out of these who gave experimental evidence for supporting the theory of origin of life.

(i) A.I. Oparin,

(ii) Stanley Miller,

(iii) J.B.S. Haldane,

(iv) Harrold Urey.

4. Answer any one of the following questions in about 100-150 words.

(a) Amrita is sitting in the middle of the square garden near her house. Whose perimeter is 48 meters. There is a road on the left side of the perimeter of this garden and a building on the other side. Firecrackers are lit by some children in the street, due to which sound is produced. Will Amrita sitting in the garden hear the echo of this sound or not? Explain your answer with reason.

5. Answer any one of the following questions in about 100-150 words.

(a) Justify the following statements with reason.

(i) There are different types of turbine construction for different types of power plants.

(ii) It is absolutely necessary to control the fission process in nuclear power plants.

(iii) Hydroelectric energy, solar energy, and wind energy are called renewable energy.

(iv) It is possible to produce energy from mW to MW using solar photovoltaic cells.

6. Prepare any one out of the Project given below:

(a) Visit in your area and collect the following articles.

(i) Copper wire, (ii) Sulphur, (iii) Aluminium sheet, (iv) Iron nail, (v) Iodine crystal

Answer the following:

(a) Classify these articles into metals, and non-metals.

(b) There is a brown coating on the iron nail. Explain the reason.

(c) Identify good conductors of heat, and define conductivity.

(d) Write down the reaction of metals with water.

(e) Write down the reactions of non-metals with water.