NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1816 - 1824 of 2029

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Question number: 1816

» Chemistry » Water

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MCQ▾

Question

Why potassium kept in kerosene oil?

Choices

Choice (4) Response

a.

It turns its color

b.

It is poison

c.

It forms oxygen

d.

It catches fire

Question number: 1817

» Chemistry » Air Around Us

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MCQ▾

Question

Name the gas used to fill the weather observation balloons.

Choices

Choice (4) Response

a.

Helium

b.

Hydrogen

c.

Inert Gas

d.

Nitrogen

Question number: 1818

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Which of the following is an immiscible liquid?

Choices

Choice (4) Response

a.

Pure water

b.

Milk

c.

Salt water

d.

Oil

Question number: 1819

» Chemistry » Water

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MCQ▾

Question

What result red hot iron react with steam?

Choices

Choice (4) Response

a.

Forms ferrous hydroxide

b.

Liberate oxygen

c.

Liberate hydrogen

d.

Forms ferric hydroxide

Question number: 1820

» Chemistry » Water

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MCQ▾

Question

When metallic oxide react with water then what happens?

Choices

Choice (4) Response

a.

Neutral reaction

b.

Alkalis form

c.

Acid form

d.

It explodes

Passage

Image showing A, B and C beakers.

Image Showing a, B and C Beakers.

Image showing A, B and C beakers.

Answer the question base on the image

Question number: 1821 (1 of 3 Based on Passage) Show Passage

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

If B is dissolved in A, C is formed. C is

Choices

Choice (4) Response

a.

Solution

b.

Solvent

c.

Solute

d.

All of the above

Question number: 1822 (2 of 3 Based on Passage) Show Passage

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

If A is dissolved in B, C is formed so A is

Choices

Choice (4) Response

a.

Solution

b.

Solute

c.

Solvent

d.

None of the above

Question number: 1823 (3 of 3 Based on Passage) Show Passage

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

If B is dissolved in A, C is formed. A is

Choices

Choice (4) Response

a.

Solution

b.

Solute

c.

Solvent

d.

All of the above

Question number: 1824

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Name the most lustrous liquid.

Choices

Choice (4) Response

a.

Mercury

b.

Salty water

c.

Sweet water

d.

Pure water

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