4. The Importance of keeping water safe | Questions Answers | Standard Two |

 

4.The Importance of keeping water safe

 Questions Answers 

Standard Two | Environmental Studies

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Q.1) Answer the following Questions in short:

1) How does the water in the rivers and lakes become polluted ?

Ans:-  After washing clothes near a river or lake and bathing cattle and animals in the river, water gets polluted.

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2) How is water filtered ?

Ans:-  We can filter water with the help of cotton clothes or readymade filters in the market.

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Q.2) Fill in the blanks using suitable words from the brackets:

             ( impure, clean, well, pure, germicide )

1) ------------------- should be put in the water tank.

Ans:- germicide.

2) Do not plant trees very close to the ---------------------.

Ans:- well

3) We get dangerous diseases like dysentery, cholera, and jaundice by drinking ------------------- water.

Ans:- impure

4) Store drinking water in a -----------------vessel.

Ans:- clean

5) Clean and -----------------water should be used for drinking and cooking.

Ans:- pure

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Q.3) Write three ways in which you can purify water.

Ans:- 1) filter water with cotton cloth or readymade filter.

          2) swirled alum in water.

          3) boil the water.

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Q.4) Rewrite the following sentences correctly :  

1) We must plant trees near a lake.

Ans:- ------------------------------------------------------------------.

2) We should wash clothes and utensils and bathe cattle in the river.

Ans:- ------------------------------------------------------------------.

3) Dip your hands in the water vessel.

Ans:- ------------------------------------------------------------------.

4) Do not boil the water and drink.

Ans:- ------------------------------------------------------------------.

5) We contract diseases by drinking pure water.

Ans:- ------------------------------------------------------------------.

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Q.5) Write answers in one sentence :  

1) What do we use to make water clear ?

Ans:- We can use alum to make water clear.

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2) How Long should the water be boiled for drinking ?

Ans:- Water should be boiled at least for 20 minutes.

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3) How should the water vessel used for drinking be kept?

Ans:- The water vessel used for drinking kept covered. it should be scrubbed and cleaned daily.

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4) Name the diseases you can get by drinking impure water.

Ans:- Diseases like dysentery, cholera, jaundice, etc are caused by drinking impure water.

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Q.6) Write 'right' or 'wrong' : 

1) Stored water should be covered.

Ans:- -------------------

2) Dip the glass into the vessel and remove water for drinking.

Ans:- -------------------

3) Germs do not get destroyed when we boil the water.

Ans:- -------------------

4) Filter the water and drink.

Ans:- -------------------

5) Boil the water during the monsoon season.

Ans:- -------------------

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Answers:- 1) Right.    2) Wrong.    3) Wrong.     4) Right.    5) Right

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Q.7) Each statement below has two reasons. Put a (✔) tick mark against the correct reasons :

1) Boil the drinking water, because -

           a) boil water becomes germfree.                                                            ☐

           b) boiled water tastes better.                                                                   ☐

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2) High walls should be built around the well, because -

           a) the leaves of trees do not fall into the well.                                        ☐

           b) the dirty water near the well does not enter the well.                         ☐

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3) The cattle should not be bathed in the river water, because -

           a) The people bathing in the river are affected by the cattle.                  ☐

           b) the river water gets polluted.                                                               ☐

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4) Stored water should be covered so that -

           a) covered water remains fresh.                                                               ☐

           b) dust and dirt do not enter covered water.                                             ☐

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5) The utensil containing drinking water should have tap, because -

           a) the water in the glass fills faster.                                                           ☐

           b) the possibility of putting a dirty glass into the vessels is avoided.       ☐

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Answers:- 1) a.    2) b.   3) b.    4) b.     5) b.

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Q.8) Cross out (❌) the wrong word in the brackets  :

1) Plant trees ( near / far from ) the well.

Ans:- Wrong word - near.

2) ( Pure / Impure ) water has plenty of germs.

Ans:- Wrong word - Pure.

3) Use boiled and filtered water for ( drinking / bathing ).

Ans:- Wrong word - bathing.

4) Use ( hands / ladle ) to remove water from the water utensil.

Ans:- Wrong word - hands.

5) The Utensil containing drinking water should ( have / not have ) a tap.

Ans:- Wrong word - not have.

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