NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1963 - 1971 of 2028

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Question number: 1963

» Chemistry » Synthetic Fibers and Plastics

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Question

Which of the following are exact properties of nylon?

Choices

Choice (4)Response

a.

Transparent, light and easy to wash

b.

Soft, strong and light

c.

Strong, clastic and light

d.

Hard, inexpensive and strong

Question number: 1964

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Which of following plastic product that can be remoulded?

Choices

Choice (4)Response

a.

Bakelite

b.

Polycot

c.

Polythene

d.

Melamine

Question number: 1965

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Which of the following part of cottonplant given cotton balls?

Choices

Choice (4)Response

a.

Flower

b.

Seed

c.

Leaf

d.

Fruit

Question number: 1966

» Chemistry » Pollution of Air and Water

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Question

Inhalation of carbon monoxide which is emitted by automobiles prevents oxygen transport to body tissues by?

Choices

Choice (4)Response

a.

Forming a stable compound with haemoglobin

b.

Destroying haemoglobin

c.

Obstructing the reaction of oxygen with haemoglobin

d.

Changing oxygen

Question number: 1967

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

The monomer of polystyrene is?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1968

» Chemistry » Pollution of Air and Water

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MCQ▾

Question

In which of the following catalytic converters are used?

Choices

Choice (4)Response

a.

Dairy farms

b.

Automobiles

c.

Poultry Farms

d.

Wind mills

Question number: 1969

» Chemistry » Pollution of Air and Water

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MCQ▾

Question

Name the water purification method that does not kill the microorganisms?

Choices

Choice (4)Response

a.

Chlorination

b.

Distillation

c.

Filtration

d.

Boiling

Question number: 1970

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Jute fibre is obtained from the ________part of jute plant?

Choices

Choice (4)Response

a.

Stem

b.

Seeds

c.

Roots

d.

Leaves

Question number: 1971

» Chemistry » Pollution of Air and Water

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MCQ▾

Question

If the global warming or greenhouse effect remains unchecked, it alter?

Choices

Choice (4)Response

a.

Sea levels

b.

Rainfall

c.

Ozone Layer

d.

All a. , b. and c. are correct

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