Environmental Content (CTET Paper-I Environmental Studies): Questions 65 - 69 of 140

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Question number: 65

» Environmental Content » Work and Play

Appeared in Year: 2012

MCQ▾

Question

In order to separate a mixture of sand and salt, which one of the following four sequences of processes has to be used? – (January)

Choices

Choice (4) Response

a.

Sedimentation, decantation, filtration, evaporation

b.

Evaporation, sedimentation, decantation, filtration

c.

Decantation, sedimentation, evaporation, filtration

d.

Filtration, decantation, evaporation, sedimentation

Question number: 66

» Environmental Content » Work and Play

Appeared in Year: 2011

MCQ▾

Question

A farmer wanted to separate the grains from the chaff. This can be achieved by the process called – (June)

Choices

Choice (4) Response

a.

Handpicking

b.

Winnowing

c.

Harvesting

d.

Threshing

Question number: 67

» Environmental Content » Food

Appeared in Year: 2011

MCQ▾

Question

Vitamins are substances – (June)

Choices

Choice (4) Response

a.

Required as medicines to make us healthy

b.

That increases our metabolic rate leading to loss of weight

c.

That builds muscles to keep us strong

d.

Required in small quantities to prevent deficiency diseases

Question number: 68

» Environmental Content » Water

Appeared in Year: 2012

MCQ▾

Question

An air- pump is kept in an aquarium in order to – (January)

Choices

Choice (4) Response

a.

Allow more oxygen to dissolve in water

b.

Provide more carbon dioxide to water plants

c.

Enhance the beauty of the aquarium

d.

Make water cleaner

Question number: 69

» Environmental Content » Water

Appeared in Year: 2012

MCQ▾

Question

A fish dies when it is put in an aquarium filled with previously boiled water but cooled to room temperature. This happens because the water in the aquarium is – (January)

Choices

Choice (4) Response

a.

Depleted in oxygen

b.

Depleted in minerals

c.

Unfit for swimming by fish

d.

Unfit for drinking by fish

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