Class 04 EVS Our Environment CBSE Questions & Answers

Class 4 · EVS Our Environment

This is Science and Social Science (EVS) class 04 EVS Our Environment CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Using the same thing by cleaning is called
  • A
    Reduce
  • B
    Remove
  • C
    Recycle
  • D
    Reusing
    Correct
2
Which of the following is biodegradable?
  • A
    Aluminum
  • B
    Orange peels
    Correct
  • C
    Plastic bottle
  • D
    Aluminum foil
3
Addition of harmful substance in water leads to
  • A
    Algal bloom
  • B
    High oxygen demand
  • C
    Water pollution
    Correct
  • D
    Microbial growth
4
To reduce plastic waste we should
  • A
    Burn it
  • B
    Minimize its use
    Correct
  • C
    Bury in the earth
  • D
    Dump it in sea
5
A person who separates articles into various categories and sell for recycling
  • A
    Kabadiwala
    Correct
  • B
    House-cleaner
  • C
    Factory worker
  • D
    Vegetable seller
6
The network of drainage pipe to carry waste water is called
  • A
    Sewer system
    Correct
  • B
    Drainage
  • C
    Water supply system
  • D
    Waste water supply
7
Solid parts of sewage can be used as
  • A
    Insecticides
  • B
    Fertilizers
  • C
    Pesticides
  • D
    Manure
    Correct
8
Sewer system is useful in
  • A
    Rainy season only
  • B
    All seasons
    Correct
  • C
    Winter season only
  • D
    Summer season only
9
Which one is a good habit
  • A
    Using plastic bag
  • B
    Using scooter for short distance
  • C
    Throwing garbage into drain.
  • D
    Carrying a cloth bag for vegetable
    Correct
10
Which one is the most common cause of contamination of water in rural area?
  • A
    Addition of manure in field near water bodies
  • B
    Soil present around the water bodies
  • C
    Defection in or around water bodies
    Correct
  • D
    Presence of aquatic organisms
11
River water is unfit for drinking because it has
  • A
    Aquatic organism
  • B
    Suspended impurities and pollutants
    Correct
  • C
    More salts than required
  • D
    All of these
12
The area where garbage is collected and decomposed is called
  • A
    All of these.
  • B
    Landfills
    Correct
  • C
    Dustbin
  • D
    Compost
13
Burning of dried leaves and other parts of plant causes
  • A
    Air pollution
    Correct
  • B
    Soil pollution
  • C
    Water pollution
  • D
    Lots of heat is generated
14
Garbage must be segregated into ______________ before composting.
  • A
    Solid and liquid
  • B
    Biodegradable and non-biodegradable
    Correct
  • C
    Natural and artificial
  • D
    Red and green
15
Drainage system failure in a cities may cause
  • A
    Epidemic
  • B
    Water logging on street
    Correct
  • C
    Shortage of water
  • D
    Hygienic condition