NSO Level 1- Science Olympiad (SOF) Class 10: Questions 887 - 889 of 986

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Question number: 887

» Chemical Reactions and Equation

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MCQ▾

Question

Figure shown the Heated the Ferrous sulphate

Figure Shown the Heated the Ferrous Sulphate

Heating ferrous sulphate is showing in figure.

What will happen?

Colour changes from light green to white

Second product is Oxygen gas

On heating, Ferrous sulphate crystals lose water and anhydrous ferrous sulphate is formed

First reaction product is ferric oxide

Choices

Choice (4) Response

a.

(1), (2)

b.

(1), (2) and (4)

c.

(1), (2), (3) and (4)

d.

(1), (3) and (4)

Question number: 888

» Sources of Energy

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MCQ▾

Question

Read the given statements for ocean thermal energy and mark the correct option

Statement 1: Temperature difference between surface water and water at the depth of should be or less

Statement 2: The hot water (from deeper layers) is pumped up to condense the liquid into vapor

Choices

Choice (4) Response

a.

Only statement 2 is correct

b.

Only statement 1 is correct

c.

None of the above

d.

Question does not provide sufficient data or is vague

Question number: 889

» Light - Reflection and Refraction

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MCQ▾

Question

Read the given statement and mark the correct option.

Statement 1: Concave mirror can produce both real and virtual images

Statement 2: Concave mirror can produce a large images of a nearby object

Choices

Choice (4) Response

a.

Only statement 2 is correct

b.

Statements 1 and 2 are correct

c.

Only statement 1 is correct

d.

Statements 1 and 2 are incorrect