NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1856 - 1864 of 2029

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Question number: 1856

» Chemistry » Water

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MCQ▾

Question

In what proportion water exist in its chemical formula by mass?

Choices

Choice (4) Response

a.

1: 8

b.

1: 2

c.

8: 1

d.

2: 1

Question number: 1857

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Medicine is an example of

Choices

Choice (4) Response

a.

Pure

b.

Heterogeneous Mixture

c.

Homogeneous Mixture

d.

Question does not provide sufficient data or is vague

Question number: 1858

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

A mixture can be substance.

Choices

Choice (4) Response

a.

Element

b.

Impure

c.

Compound

d.

Pure

Question number: 1859

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Which of the following is the hardest substance known?

Choices

Choice (4) Response

a.

Copper

b.

Iron

c.

Diamond

d.

Silver

Question number: 1860

» Chemistry » Air Around Us

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MCQ▾

Question

Which of the gas human inhale?

Choices

Choice (4) Response

a.

Oxygen

b.

Carbon di-oxide

c.

Nitrogen

d.

None of the above

Question number: 1861

» Chemistry » Air Around Us

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MCQ▾

Question

Biological oxygen demand (BOD) indicates:

Choices

Choice (4) Response

a.

Salinity

b.

Dissolved oxygen levels

c.

Turbidity

d.

Organic matter levels in water

Question number: 1862

» Chemistry » Water

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MCQ▾

Question

Seawater contains ________ amount of common salt dissolved in it.

Choices

Choice (4) Response

a.

Large

b.

Less

c.

0.3%

d.

10%

Question number: 1863

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Tap water is a mixture of dissolved.

Choices

Choice (4) Response

a.

Insect and water

b.

Sand and water

c.

None of the above

d.

Question does not provide sufficient data or is vague

Question number: 1864

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

There are types of mixtures

Choices

Choice (4) Response

a.

Two

b.

Three

c.

One

d.

Question does not provide sufficient data or is vague

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