NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1819 - 1826 of 2029

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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

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. A is

Choices

Choice (4)Response

a.

Solution

b.

Solute

c.

Solvent

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 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: 1823 (3 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: 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

Question number: 1825

» Chemistry » Water

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MCQ▾

Question

Effect of cooling on a saturated water solution

Choices

Choice (4)Response

a.

Solubility of solid remains same

b.

Solubility of solid some time increases and decreases

c.

Solubility of solid decreases

d.

Solubility of solid increases

Question number: 1826

» Chemistry » Air Around Us

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MCQ▾

Question

Chemical formula of oxygen

Choices

Choice (4)Response

a.

2O

b.

2O2

c.

O2

d.

O

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