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Test: Our Environment- 1


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10 Questions MCQ Test Science for Class 3 | Test: Our Environment- 1

Test: Our Environment- 1 for Class 3 2022 is part of Science for Class 3 preparation. The Test: Our Environment- 1 questions and answers have been prepared according to the Class 3 exam syllabus.The Test: Our Environment- 1 MCQs are made for Class 3 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Our Environment- 1 below.
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Test: Our Environment- 1 - Question 1

Which of the following is not true for the care of teeth?

Detailed Solution for Test: Our Environment- 1 - Question 1

Chewing or mastication is the process by which food is crushed and ground by teeth. It is the first step of digestion, and it increases the surface area of foods to allow a more efficient break down by enzymes.

Test: Our Environment- 1 - Question 2

Which of the following is used to see disease-causing germs?

Detailed Solution for Test: Our Environment- 1 - Question 2

Germs are microorganisms. This means that they can be seen only through a microscope. They can be found everywhere - in the air, soil, and water.

Test: Our Environment- 1 - Question 3

Mosquitoes spread:

Detailed Solution for Test: Our Environment- 1 - Question 3

Malaria is a life-threatening disease caused by parasites that are transmitted to people through the bites of infected female Anopheles mosquitoes. It is preventable and curable. In 2019, there were an estimated 229 million cases of malaria worldwide. 

Test: Our Environment- 1 - Question 4

Stagnant water breeds:

Detailed Solution for Test: Our Environment- 1 - Question 4

Malaria and dengue are among the main dangers of stagnant water, which can become a breeding ground for the mosquitoes that transmit these diseases. Stagnant water can be dangerous for drinking because it provides a better incubator than running water for many kinds of bacteria and parasites. 

Test: Our Environment- 1 - Question 5

What should be sprayed on stagnated water to prevent mosquitoes breeding?

Detailed Solution for Test: Our Environment- 1 - Question 5

The destruction of pupae and larvae of mosquitoes can be achieved chemically and biologically. The spraying of some oils such as kerosene oil, petroleum, paraffin oil, crude oil, etc. on the surface does not allow larvae to breathe and consequently, they die due to suffocation.
Cultivation of larvivorous fishes like Gambusia is another important control measure for mosquitoes. These fishes eat their larvae and pupae.
Application of mustard oil or citronella oil or some repellent cream on uncovered body parts of the body keeps mosquitoes away.

Test: Our Environment- 1 - Question 6

Which of the following is the correct way to dispose garbage?

Detailed Solution for Test: Our Environment- 1 - Question 6

This method is useful for the disposal of biodegradable waste. The part of the garbage which can rot in nature to form harmless substances is called biodegradable (plants and animal waste). Different biodegradable waste can be dumped in a pit. Here, it can be allowed to decompose after which the garbage will convert into useful manure. This is known as composting.

Test: Our Environment- 1 - Question 7

The solid waste produced in our house is called

Detailed Solution for Test: Our Environment- 1 - Question 7

It is unwanted materials and objects that people have thrown away. It is often also called trash, garbage, rubbish, or junk. Garbage is the waste we produce daily in our homes, including old or unwanted food, chemical substances, paper, broken furniture, used containers, and other things.

Test: Our Environment- 1 - Question 8

Flies spread:

Detailed Solution for Test: Our Environment- 1 - Question 8

The diseases that flies can transmit include enteric infections (such as dysen- tery, diarrhoea, typhoid, cholera and certain helminth infections), eye infections (such as trachoma and epidemic conjunctivitis)

Test: Our Environment- 1 - Question 9

Which of the following should NOT be done to keep our surroundings clean?

Detailed Solution for Test: Our Environment- 1 - Question 9

Spitting in public is an offence under municipal laws in various cities, but it is hardly taken seriously by the people in the country. Spitting in public places could enhance the spread of the virus.

Test: Our Environment- 1 - Question 10

Which of the Following is the best way to dispose waste water?

Detailed Solution for Test: Our Environment- 1 - Question 10

Your passion for gardening may also be the reason for excess water usage in your home. You must have noticed how some water flows down drainage holes at the bottom of pots. Instead of letting the excess water go to waste, you can collect it and reuse it to water your plants. Do this especially while watering larger plants so that the smaller ones can be watered using the wastewater collected from drainage holes.

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