NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1910 - 1917 of 2029

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Question number: 1910

» Physics » Work and Machines

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MCQ▾

Question

The efficiency of an ideal machine is:

Choices

Choice (4)Response

a.

100 %

b.

80 %

c.

90 %

d.

92 %

Question number: 1911

» Physics » Work and Machines

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MCQ▾

Question

In which of the following class of lever fulcrum is in middle?

Choices

Choice (4)Response

a.

Class III

b.

Not Mentioned

c.

Class II

d.

Class I

Question number: 1912

» Physics » Work and Machines

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MCQ▾

Question

If the efficiency of a machine is , Mechanical Advantage is 5 and load is then calculate the effort

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1913

» Chemistry » Separation of Substances

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MCQ▾

Question

The property of magnetic poles to rest at a given direction is known as ________.

Choices

Choice (4)Response

a.

Directive property

b.

Repulsion

c.

Magnetic poles

d.

Magnetic property

Question number: 1914

» Chemistry » Separation of Substances

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MCQ▾

Question

The property by which iron ore attracts iron is known as

Choices

Choice (4)Response

a.

Directive property

b.

Magnetism

c.

Magnetic force

d.

Repulsion

Question number: 1915

» Physics » Work and Machines

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MCQ▾

Question

Efficiency of an ideal machine such as lever, pulley or gear train is:

Choices

Choice (4)Response

a.

Equals to 100%

b.

More than 100%

c.

More than 50%

d.

Less than 100%

Question number: 1916

» Chemistry » Changes Around Us

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MCQ▾

Question

Exchange of energy is in change.

Choices

Choice (4)Response

a.

Physical

b.

Reversible

c.

Chemical

d.

Question does not provide sufficient data or is vague

Question number: 1917

» Physics » Work and Machines

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MCQ▾

Question

The new substance formed after chemical change is.

Choices

Choice (4)Response

a.

Reactant

b.

New substance

c.

Product

d.

None of the above

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