6 ENVIRONMENT || NIOS-SECONDARY COURSE || HOME SCIENCE-216 CLASS X

 CHAPTER-6 

ENVIRONMENT


TERMINAL EXERCISE 

Q1. Define the terms pollution and pollutant. 

Ans: The term ‘pollution’ is derived from the Latin word ‘Polluere’, which means ‘to contaminate any feature of the environment’.

        Pollution is the addition of any substance to the environment in excess            to what is normally present, thereby, making the environment impure.

        The substances which cause pollution are known as pollutants.

 

Q2. What are the sources of air pollution? 

Ans:


 

Q3. How can you control soil pollution? 

Ans:

The following measures should be taken to prevention of soil pollution-
i. Use of pesticides should be minimized.
ii. Use of fertilizers should be judicious.
iii. Cropping techniques should be improved to prevent growth of weeds.
iv. Special pits should be selected for dumping wastes.
v. Controlled grazing and forest management.
vi. Wind breaks and wind shield in areas exposed to wind erosion.
vii. Planning of soil binding grasses along banks and slopes prone to rapid erosion.

 Q4. What are the effects of noise pollution? 

 Ans: 

  • Noise leads to emotional and behavioral stress. A person may feel            disturbed in the presence of loud noise such as produced by heating of  drums. 
  • Noise may permanently damage hearing. A sudden loud noise can cause severe damage to the eardrum. 
  • Noise increases the chances of occurrence of diseases such as              headache, blood pressure, heart failure, etc.
  •  
  • Noise leads to increased heart beat, constriction of blood vessels and dilation of pupil.
  • Noise is a problem especially for patients who need rest.
  • Noise may cause damage to liver, brain and heart. 

Q5. Mention two pollutants which pollute both soil and water.

        Ans: Chemical waste from Factories and Industries.
               Acid rain can pollute both of them.
              Garbage can pollute both of them.

 

Q6. How can you reduce pollution caused by smoke in your neighbourhood?

         Ans:  

  • Plant more and more Trees it reduces pollution
  • Using public transports.
  • Turn off the lights when not in use.
  • Recycle and Reuse.
  • No to plastic bags. 
  • Reduction of forest fires and smoking. 
  • Use of fans instead of Air Conditioner. 
  • Use filters for chimneys. 
  • Avoid usage of crackers.

       Q7. Why should we not defecate, urinate and spit on soil?
      Ans: We should not defecate, urinate and spit on soil because it can be          damaged and get eroded losing nutrients and will not be able to gain                nutrients so that we can't do farming on it.

 

Comments

Post a Comment

Popular posts from this blog

3 KONDIBA—A HERO || NIOS - SECONDARY COURSE || ENGLISH-202 CLASS-X

  CHAPTER-3  KONDIBA—A HERO  INTEXT QUESTIONS 3.1   1. When and how did Kondiba become blind? Ans: K obinda became blind with small pox at the age of 8.     2. Kondiba hated begging, but he had to beg. Why did he start begging? Give two reasons to complete the following statements:  a) He could not earn much by selling brooms.   b) He came to know that the beggars could earn well in Mumbai.   3. If you were in Kondiba’s place and would lose your eyesight what would you do? Ans:   4. Who had dug the well? Where was it dug? Ans: Residents of Golibar slum   had dug the well , in the center of the colony.   5. Why was the well dug? Ans: T he well was dug  t ap water was not enough for all the people living in the colony. 6. What had happened to the water in the well within two years? Ans:   T he water in the well  had turned blackish-green  within two years.   7. What happened one day when Kondiba was ...
Read more

1 SNAKE BITE || NIOS - SECONDARY COURSE || ENGLISH-202 CLASS-X

Chapter-1 SNAKE BITE INTEXT QUESTIONS 1.1  I. Answer the following questions.  Q.1. Why do you think the snake hid itself?  Ans: I  think the snake hid itself  because it was scared of human beings.     Q.2. What did Raja do when he saw the snake going into the coconut shell? Ans:W hen Raja saw the snake going into the coconut shell  Raja put a stone on the mouth of the coconut shell to close it.   Q.3. Why was Grandmother shocked? How did she react? Ans:   Raja’s grandmother was shocked to hear that Raja had brought home a snake. She cried for help.   Q.4. Imagine you are Raja’s grandfather. Raja brings home a snake. How do you think you would react? Ans: I would not like Raja bringing home snake. I think snakes are poisonous.             II. Say whether the following statements are true or false: 1. The snake hid under a stone.    F       2. Raja was very excited to see t...
Read more

21. THE VILLAGE PHARMACY || NIOS - SECONDARY COURSE || ENGLISH-202 CLASS-X

  Chapter-21   THE VILLAGE PHARMACY  INTEXT QUESTIONS 21.1 I. Answer the following questions:  1. Fill in the blanks with appropriate words from the text  a. Neema was studying in the VIII    standard.  b. Her father was a  doctor/paediatrician  by profession.  c. Neema came home with a   neem sapling  in her hand.  d. The fire accident took place in   Kumbakonam  in Tamil Nadu.  e. Neema’s  grandparents   were visiting her family from the village.  2. Circle the correct meaning of the underlined phrases in the following sentences from among the options given below each sentence.   a. The country is paying homage to the dead soldiers today.  1. showing respect ✅ 2. passing a comment  3. giving a prize  4. celebrating  b. Sometimes we have to face some tragic circumstances in life.  1. surprising events  2. sad events  ✅ 3. cause to be angry  4....
Read more