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Question-1
The tank used for the treatment of waste water with aerobic bacteria is called:
(A)
Aerobic tank
(B)
Aeration tank
(C)
Stirring tank
(D)
Anaerobic tank
Question-2
The amount of oxygen required by microorganisms to decompose the organic substance is known as:
(A)
Dissolved Oxygen
(B)
Chemical oxygen demand
(C)
Biochemical oxygen demand
(D)
Turbidity
Question-3
Which is the largest river conservation project in India?
(A)
YAP
(B)
GAP
(C)
GCP
(D)
YCP
Question-4
The waste water from kitchens and bathrooms is often called:
(A)
Grey water
(B)
White water
(C)
Red water
(D)
Blue water
Question-5
Infectious bio medical wastes are produced from:
(A)
House
(B)
Industry
(C)
Hospital
(D)
Mine
Question-6
The secondary sludge can also be used as:
(A)
Land filler
(B)
Compost
(C)
Pesticide
(D)
Fuel
Question-7
Waste water from school, office and home are generally called:
(A)
Industrial waste
(B)
Municipal waste
(C)
Agricultural waste
(D)
Domestic waste
Question-8
Which of the following programs was organized to prevent the river Ganga from being further polluted?
(A)
GAP
(B)
YAP
(C)
GPA
(D)
GPP
Question-9
The Chernobyl nuclear power plant was located in:
(A)
Ukraine
(B)
Uganda
(C)
Uruguay
(D)
Guyana
Question-10
In which sea is rapid eutrophication seen?
(A)
Red sea
(B)
Mediterranean sea
(C)
Arabian sea
(D)
All the above
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Std 7
CBSE
Practice in Related Chapters
Nutrition in Plants
Nutrition in Animals
Transportation in Animals and Plants
Respiration
Soil
Weather, Climate and Adaptations of Animals to Climate
Water- A Precious Resource
Forests: Our Lifeline
Transportation and Excretion
Natural Resources-Forest Products
Waste Management
Reproduction in plants
Waste water Management
Forest and Their Conservation
Movements of Substances
The Living World and its Surroundings
Multiplication in Plants
Living Science
Introduction to Cells
Cell Organelles
Levels of Organisation
Organ Systems of Human Body
Life Processes: Nutrition in Animals and Plants
Life Processes-Movement in Plants and Animals
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