NCERT Solutions for Class 10 English Main Course Book (MCB) Unit 10

Unit-3 Promise for the future: Renewable Energy Class 10

Unit 10 Unit-3 Promise for the future: Renewable Energy Exercise Answers & Summary

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Unit-3 : Solutions of Questions on Page Number : 88

Q1 :  

In A.2 you will read about alternate sources of energy. Before doing so find out how much you already know about renewable sources of energy.

Complete column A, to indicate whether you think each statement is True (), False(X), or whether you do not know (?) After reading the passage, complete column B in the same way.

statements

(A)

(B)

(a)

Solar energy is a powerful source of energy

   

(b)

Electric battery operated cars are more powerful than those run on fossil fuels

   

(c)

EV stands for electric vehicles

   

(d)

Driving an electric vehicle is stressful

   

(e)

Solar power can be the next source of pollution in the world

   

(f)

India is one of the countries with a great potential for generation and use of solar energy

   

(g)

Using alternate s


Answer :

statements

(A)

(B)

(a)

Solar energy is a powerful source of energy

True

 

(b)

Electric battery operated cars are more powerful than those run on fossil fuels

False

 

(c)

EV stands for electric vehicles

True

 

(d)

Driving an electric vehicle is stressful

False

 

(e)

Solar power can be the next source of pollution in the world

False

 

(f)

India is one of the countries with a great potential for generation and use of solar energy

True

 

(g)

Using alternate sources of energy can help India save a lot of money spent in foreign exchange

True

 

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Q2 :  

Now go back to A.1 and complete column (B). How much did you know already before you read the article?


Answer :

statements

(A)

(B)

(a)

Solar energy is a powerful source of energy

True

True

(b)

Electric battery operated cars are more powerful than those run on fossil fuels

False

False

(c)

EV stands for electric vehicles

True

True

(d)

Driving an electric vehicle is stressful

False

False

(e)

Solar power can be the next source of pollution in the world

False

False

(f)

India is one of the countries with a great potential for generation and use of solar energy

True

True

(g)

Using alternate sources of energy can help India save a lot of money spent in foreign exchange

True

True

Answer needs Correction? Click Here

Q3 :  

India receives 5000 trillion KWH / year which means______________________


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Q4 :  

The advantages of using solar energy instead of fossil fuels is that it is______________________


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Q5 :  

It is important to find means of keeping air and noise pollution in urban areas under control because______________________


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Q6 :  

Tax exemptions and subsidies are required to______________________


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Q7 :  

Tax exemptions and subsidies are required to______________________


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Q8 :  

The media can help by______________________


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Q9 :  

Copy and complete the following table with the required information from the passage

Points of comparison

Internal Combustion

Engine Electric Motors

1.

Pollution

   

2.

Engine efficiency

   

3.

Peak power generation

   

4.

Recharging

   

5.

Maintenance

   


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Q10 :  

Based on your reading of the passage say whether the following statements are True or False:

(a) EVs have the potential to flourish in India

(b) EVs degrade with time

(c) EVs can create health hazards

(d) EVs cannot drive fast because they have only two pedals

(e) Solar power will not last for a very long time in our country

(f) Establishing Solar Power generating units is too expensive


Answer :

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Q11 :  

Below is a flow chart describing the process of making rubber. Use it to help you copy and complete the process description that follows it. Remember to use the simple present tense, a mixture of actives and passives, and to add sequence markers where you see*

Plant rubber trees

→

Make cuts in the bark and attach containers.

→

Collect latex in the containers

→

Send latex to the factory

Coagulate latex with acetic acid.

→

Separate the coagulated mass

→

Press it into blocks or roll it into sheets

→

Dry the blocks or sheets in a current of warm air

First rubber trees …….. in deep soil.*. When the trees …, fully ….., the bark of the tree …. and containers …. The latex …….. and is ……. to the factory. Here it ….. by treating it with acetic acid* the coagulated mass ….. It is then ….. into blocks or ….. into sheets. * …. in a current of warm air. Check: What tense did you use? Did you use sequence markers? Did you use a mixture of actives and passives?


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Q12 :  

You have been gifted a new cell phone which is powered by solar energy.

Write an email to your friend describing the phone and all its exciting features. You may use the notes that you have made in A.7


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Main Course Book (MCB) - English : CBSE NCERT Exercise Solutions & Summary for Class 10th for Unit-3 Promise for the future: Renewable Energy will be available online in PDF book form soon. The solutions are absolutely Free. Soon you will be able to download the solutions.

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