Class 6 Garbage In Garbage Out CBSE Questions & Answers

Class 6 · Garbage In Garbage Out

This is Science Class 6 Garbage in Garbage out CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Algal bloom causes
  • A
    Low dissolved oxygen level
    Correct
  • B
    High dissolved oxygen level
  • C
    More presence of oxygen
  • D
    Less presence of oxygen
2
Backward composting is a method of
  • A
    Source reduction of wastes
    Correct
  • B
    House hold waste management
  • C
    Decomposition of dead plants
  • D
    Sewage treatment
3
Fastening the composting process by adding ___________ is called vermiform composting.
  • A
    Cockroach
  • B
    Earthworm
    Correct
  • C
    Bacteria
  • D
    Frog
4
Dissolved and suspended impurities in sewage is called
  • A
    Absorbents
  • B
    Contaminants
    Correct
  • C
    Pollution
  • D
    Sterile
5
Converting plants and animals wastes into manure is called
  • A
    Fertilizing
  • B
    Landfill
  • C
    Composting
    Correct
  • D
    Vermiform composting
6
Instead of polythene bag we should use
  • A
    Plastic bag
  • B
    Rubber bag
  • C
    Nylon bag
  • D
    Cotton bag
    Correct
7
The process of wastewater treatment is called
  • A
    Disinfection
  • B
    Chlorination
  • C
    Sewage treatment
    Correct
  • D
    Water treatment
8
Which is a paste of clay and paper?
  • A
    Paper-mache
    Correct
  • B
    Plaster
  • C
    Plasticine
  • D
    Clay
9
Sewage contain bacteria that may cause disease like
  • A
    Cholera and typhoid
    Correct
  • B
    Skin disease and heart disease
  • C
    Cancer and cholera
  • D
    Jaundice and tuberculosis
10
Which of the following substance cannot be reused
  • A
    Metals
  • B
    Paper
  • C
    Plastic container
  • D
    Fruit peels
    Correct
11
Solid organic wastes can be used as
  • A
    Pesticides
  • B
    Herbicides
  • C
    Manure
    Correct
  • D
    Fertilizers
12
Which of the following substance cannot be used a source of energy?
  • A
    Human excreta
  • B
    Cow dung
  • C
    Animals left out
  • D
    Plastics and polythene
    Correct
13
Biogas is obtained by decomposition of
  • A
    Wood and coal
  • B
    All of these
  • C
    Cow dung and other animal wastes
    Correct
  • D
    Polythene and polyester
14
Dried slug can be used as
  • A
    Contaminants
  • B
    Manure
    Correct
  • C
    Organic nutrients
  • D
    Insecticides
15
In which season water scarcity is most acute?
  • A
    Winter season
  • B
    Autumn season
  • C
    Summer season
    Correct
  • D
    Rainy season