NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1858 - 1865 of 2029

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Question 1858

Question

MCQ▾

A mixture can be substance.

Choices

Choice (4)Response

a.

Element

b.

Impure

c.

Compound

d.

Pure

Question 1859

Question

MCQ▾

Which of the following is the hardest substance known?

Choices

Choice (4)Response

a.

Copper

b.

Iron

c.

Diamond

d.

Silver

Question 1860

Question

MCQ▾

Which of the gas human inhale?

Choices

Choice (4)Response

a.

Oxygen

b.

Carbon di-oxide

c.

Nitrogen

d.

None of the above

Question 1861

Question

MCQ▾

Biological oxygen demand (BOD) indicates:

Choices

Choice (4)Response

a.

Salinity

b.

Dissolved oxygen levels

c.

Turbidity

d.

Organic matter levels in water

Question 1862

Question

MCQ▾

Seawater contains ________ amount of common salt dissolved in it.

Choices

Choice (4)Response

a.

Large

b.

Less

c.

0.3 %

d.

10 %

Question 1863

Question

MCQ▾

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 1864

Question

MCQ▾

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

Question 1865

Question

MCQ▾

What type of mixture water is?

Choices

Choice (4)Response

a.

Heterogeneous

b.

Homogenous

c.

All of the above

d.

None of the above

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