RBSE Solutions for Class 5 EVS Chapter Chapter 12 Contaminated Water Spreads Diseases

Rajasthan Board RBSE Solutions for Class 5 EVS Chapter 12 Contaminated Water Spreads Diseases Textbook Exercise Questions and Answers.

RBSE Class 5 EVS Solutions Chapter 12 Contaminated Water Spreads Diseases

RBSE Class 5 EVS Contaminated Water Spreads Diseases Textbook Questions and Answers

Think and Answer the Following Questions:

Question 1. 
What is the difference between the river water and the water accumulated in a pit?
Answer: 
The river water keeps on flowing so it does not contaminate and it doesn’t smell foul. Insects don’t breed in the river water, while the water in a pit, is stagnant water, so it is contaminated and its smells foul. Mosquitoes and other insects grow in this water.

 

Question 2. 
Where do you see stagnant water in your nearby area?
Answer: 
We see stagnant water in our nearby area in the ponds, and drainwater accumulated near the locality.

Question 3. 
Why is there a foul smell from the water accumulated in a pit?
Answer: 
In a pit, the water is stagnant which is contaminate, and insects grow in it. Therefore, the water accumulated in a pit smells foul.

Question 4. 
Why there is no foul smell in the flowing water of rivers/streams?
Answer: 
In the flowing water, insects don’t breed. Therefore it doesn’t get contaminated too. Hence, it doesn’t smell foul,

Observe and Give Answers of the Following

Question 1. 
What do you see in the glass filled with the water collected from the pit? 
Answer: 
In the glass filled with the water collected from the pit tiny organisms and insects can be seen.

Question 2. 
Can you see small organisms or insects in it?
Answer: 
Yes, we can see small organisms or insects in it.

Think and Answer the Following

Question 1. 
Why did Mohit suffer from malaria?
Answer: 
In the evening when Mohit was playing in the garden, mosquitoes bit him.

Question 2. 
What are the symptoms of malaria?
Answer:
Patient of malaria feels very cold, suffers with high fever and vomits, 

Explore and Answer the Following

Question 1
Which mosquito causes malaria?
Answer: 
Female Anopheles mosquito causes malaria

Think and Give Answers of These Questions

Question 1. 
Which measures should be adopted to control the increase in the number of mosquitoes?
Answer: 
In open spaces water should not be allowed to accumulate. We should clean the drains from time to time arid sprinkle DDT powder.

Question 2. 
Where does the water get collected in open space?
Answer: 
The water gets collected in the pits near the locality.

Question 3. 
Do the mosquitoes flourish in this water?
Answer: 
Yes, the mosquitoes flourish in this water.

Look at the above Table and Answer the Following Questions :

Question 1. 
Which diseases are caused by contaminated water and food?
Answer: 
Jaundice, Diarrhoea, Worm infestation, Polio

Question 2. 
How will you identify that a person is suffering from jaundice?
Answer:
We will identify it by the symptoms such as diarrhoea with yellow urine, yellow tinted eyes apd nails, and vomiting.
 
Question 3. 
Fever along with spasms in hands and legs are the symptoms of which disease?
Answer: Polio,

Explore

Question 1. 
If there is any sick person in your nearby area, then what are his sufferings?
Answer: 
There is a person in our nearby area, suffers from loose motions, cramps in stomach, dryness of the tongue and lips and reduced frequency of urination.

Question 2. 
Based on the symptoms, from which disease he is suffering?
Answer: 
Diarrhoea.

Question 3. 
Discuss and try to know which dis-ease is diagnosed by the doctor?
Answer: 
Diarrhoea disease, rar

Think and Answer the Following

Question 1. 
What do you do to purify water at home?
Answer: 
We purify water at home by filtering, boiling or by using filtering machine (R.O.).

Learnt, Understood, and now tell

Question 1.
Which mosquito causes dengue disease?
Answer: 
Aedes mosquito causes dengue dis¬ease.

Question 2. 
Write the names of the method used to purify water?
Answer: 

1. Boiling 
2. Filtering 
3. By using filter (R.O.)

Question 3. 
Which diseases are caused by contaminated water?
Answer: 
Jaundice, diarrhoea, worm infestation, polio, etc., diseases are caused by contaminated water.

Question 4. 
Why should we not allow dirty waste to accumulate at any place?
Answer: 
If dirty water is accumulated at any place, mosquitoes and other insects breed in it, which cause many diseases.

RBSE Class 5 EVS Contaminated Water Spreads Diseases Important Questions and Answers

Objective Type Questions

Question 1. 
Choose the right option.
(i) Female Anopheles mosquito causes-
(a) Malaria 
(b) Dengue
(c) Jaundice 
(d) Polio
Answer:
(a) Malaria 

(ii) Aedes mosquito causes-
(a) Malaria 
(b) Dengue
(c) Jaundice 
(d) Polio
Answer:
(b) Dengue

(iii) Spasms in hands and legs, later paralysis in legs, is the symptom of-
(a) Malaria 
(b) Dengue
(c) Jaundice 
(d) Polio
Answer:
(d) Polio

Question 2. 
Fill in the blanks :
(a) Harimohan used to graze his .............. in his village.
(b) The villagers remained .............. most of the time.
(c) When Alka looked inside the pit carefully, she saw .............. in it.
Answer:
(a) sheep 
(b) ill 
(c) insects.

Question 3. 
Match Table A and Table B :

Table A	Table B
Malaria	spasms in hands and legs
Worm infestation	Cold, high fever
Polio	dryness of the tongue and lips
Dengue	Offsprings of mosquito
Larvae	Aedes mosquito

Answer:

Table A	Table B
Malaria	Cold, high fever
Worm infestation	dryness of the tongue and lips
Polio	spasms in hand and legs
Dengue	Aedes mosquito
Larvae	offsprings of mosquito

Question 4. 
State True/False.
(i) Mosquitos grow in stagnant water.
(ii) Aedes mosquito causes malaria.
(iii) We should allow dirty water to get accumulated around us.
Answer:: 
(i) True 
(ii) False 
(iii) False.

Very Short Answer Type Questions

Question 1. 
Why did Harimohan take his sheep to the pond?
Answer: 
To let them drink water.

Question 2. 
What did Harimohan do in the village?
Answer: 
He grazed his sheep.

Question 3. 
Due to using contaminated water, the people of Sarala Village remained in which condition most of the time?
Answer: 
They remained ill.

Question 4. 
What did Alka see in the water when she looked inside the pit carefully?
Answer: 
She saw insects.

Question 5. 
What is there outside Alka’s house?
Answer: 
A beautiful garden.

Question 6. 
Where does Mohit play every evening?
Answer: 
In the garden.

Question 7.
Which disease did the doctor diagnose in Mohit?
Answer: 
Malaria.

Short/Long Answer Type Questions

Question 1. 
People of Sarala Village used water of the pond for which purposes?
Answer: 
People of Sarala village used the water of the pond for drinking, cooking, and for their animals to drink, etc.

Question 2. 
What is the effect of summers on the pond?
Answer: 
During summer season, the water of the pond would dry up and turn into mud.

Question 3. 
Why can’t Alka play in the garden outside her house?
Answer: 
Alka can’t play in the garden outside her house because mosquitoes trouble her a lot, by biting her.

Question 4. 
How do mosquitoes breed?
Answer: 
Mosquitoes lay eggs in stagnant water only. From these eggs, larva come out. When larva (Offsprings of mosquitoes) grow up, it becomes a mosquito.

Question 5. 
Explain the symptoms of diarrhoea.
Answer: 
More than 4-5 motions in a day, cramps in the stomach, dryness of the tongue and lips, reduced frequency of urination, etc. are the symptoms of diarrhoea.

Question 6. 
How will you identify worm infestation?
Answer: 
We will identify worm infestation if the patient has the symptoms like reduced appetite, yellowing of the face, pain in the stomach, etc.

Question 7. 
Explain the symptoms of polio dis-ease.
Answer: 
The symptoms of polio include fever, headache, sneezing, vomiting, spasms in hand and legs and later, paralysis in the legs.

Question 8. 
How can we prevent the diseases caused by contaminated water?
Answer: 
To prevent the diseases caused by contaminated water, we should drink clean and pure water. We should purify drinking water by Alteration, boiling or use of filter machine (R.O.), etc.

Question 9. 
Read the following table. Go through the symptoms mentioned in the table, and write down the names of the concerned diseases.

Symptoms	Disease
1. Dryness of the tongue and lips, reduced frequency of urine	Diarrhoea
2. Fever, spasms in hands and legs, later paralysis in legs	Polio
3. White stool, vomiting	Jaundice

Answer:

Symptoms	Disease
1. Dryness of the tongue and lips, reduced frequency of urine
2. Fever, spasms in hands and legs, later paralysis in legs
3. White stool, vomiting

Question 10. 
Read the diseases given in the following table and mention their symptoms

Disease	Symptoms of the disease
1. Dengue
2. Malaria
3. Jaundice

Answer:

Disease	Symptoms of the disease
1. Dengue	Fever, bodyache, spasms in muscles, red rashes
2. Malaria	Fever, Cold
3. Jaundice	White stool, yellowish urine yellow tinted eyes and nails vomiting

Question 11. 
In the following table, read the symptoms, and mention the names of the concerned disease.

Symptoms	Disease
1. Fever, Cold
2. Pain in muscles and joints
3. Reduced appetite

Answer:

Symptoms	Disease
1. Fever, Cold	Malaria
2. Pain in muscles and joints	Dengue
3. Reduced appetite	Worm infestation

Question 12. 
In the following table read the names of diseases and mention their causes.

Disease	Causes of the disease
1. Diarrhoea
2. Worm infestation
3. Jaundice

Answer:

Disease	Causes of the disease
1. Diarrhoea	Contaminated water and food
2. Worm infestation	Contaminated water and food
3. Jaundice	Contaminated water and food