NSO Level 1- Science Olympiad (SOF) Class 10: Questions 751 - 757 of 986

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Question number: 751

» Sources of Energy

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MCQ▾

Question

Choose correct disadvantage/ (s) of using wood as a fuel is/are

Choices

Choice (4)Response

a.

Less availability

b.

Expensive

c.

Produce smoke on burning

d.

None of the above

Question number: 752

» Sources of Energy

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MCQ▾

Question

Advantage of wind energy is

Choices

Choice (4)Response

a.

Low maintenance

b.

Eco-friendly

c.

Small area need

d.

Question does not provide sufficient data or is vague

Question number: 753

» Acids, Bases and Salts

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MCQ▾

Question

When is added to Solution

Choices

Choice (4)Response

a.

No Action takes places

b.

Oxygen is evolved

c.

Hydrogen is evolved

d.

Water is produced

Question number: 754

» Acids, Bases and Salts

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MCQ▾

Question

Which of the following is not a property of Bases?

Choices

Choice (4)Response

a.

Greater than 7 pH

b.

Turn litmus blue

c.

Corrode Metals

d.

All of the above

Question number: 755

» Metals and Non - Metals

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MCQ▾

Question

Which of the not an oxide ore of Calcium (Ca)?

Choices

Choice (4)Response

a.

Gypsum

b.

Dolomite

c.

Fluorite

d.

Calcite

Question number: 756

» Our Environment and Its Management

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MCQ▾

Question

In the given food chain, suppose the amount of energy at fourth trophic level is , what will be the energy available at the producer level?

Grass Grasshopper Frog Snake Hawk

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 757

» Chemical Reactions and Equation

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MCQ▾

Question

Which of the following metals is not protected by a layer of its oxide?

Choices

Choice (4)Response

a.

Metals

b.

Silver

c.

Aluminum

d.

All of the above

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