NSO Level 1- Science Olympiad (SOF) Class 10: Questions 643 - 648 of 986

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Question number: 643

» Sources of Energy

Edit
MCQ▾

Question

Choose correct advantages of geothermal energy is/are

Choices

Choice (4)Response

a.

Expensive

b.

Many site available

c.

Renewable

d.

All of the above

Question number: 644

» Acids, Bases and Salts

Edit
MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: of black coffee is less than that of water of the same concentrate.

Statement 2: Vegetable oil has a less pH value then baking soda.

Choices

Choice (4)Response

a.

Only statement 2 is Correct

b.

Only statement 1 is Correct

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 645

» Sources of Energy

Edit
MCQ▾

Question

Which of the incorrect option for disadvantage of hydropower plant?

Choices

Choice (4)Response

a.

Highly expensive to construct

b.

People face social and environment problems

c.

Large area of human habitation and agricultural get submerged

d.

More maintenance cost

Question number: 646

» Our Environment and Its Management

Edit
MCQ▾

Question

Flow of energy in an ecosystem is always

Choices

Choice (4)Response

a.

Bidirectional

b.

No specific direction

c.

Multi directional

d.

Unidirectional

Question number: 647

» Acids, Bases and Salts

Edit
MCQ▾

Question

What gas is evolved when a hydrochloric acid reacts with a metal aluminum oxide is,

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 648

» Light - Reflection and Refraction

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match the column I and column II and the select the correct option from the coded given below:

List-Ⅰ (Column I)List-Ⅱ (Column II)

(A)

Act as concave mirror

(i)

Curved outward

(B)

Convex Mirror

(ii)

Used in street lights

(C)

Act as a convex mirror

(iii)

Used for security checking purposes

(D)

Concave Mirror

(iv)

Curved inward

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iv)
  • (i)
  • (ii)
  • (iii)

b.

  • (iv)
  • (i)
  • (iii)
  • (ii)

c.

  • (iv)
  • (ii)
  • (i)
  • (iii)

d.

  • (iii)
  • (ii)
  • (iv)
  • (i)

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