NSO Level 1- Science Olympiad (SOF) Class 10: Questions 973 - 976 of 986

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Question number: 973

» Sources of Energy

Edit
MCQ▾

Question

Read the given statements and mark the correct option

Statement 1: In solar cells less initial cost but high maintenance

Statement 2: Solar cells are device that convert solar energy into electricity

Choices

Choice (4) Response

a.

Only statement 1 is correct

b.

Only statement 2 is correct

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 974

» Our Environment and Its Management

Edit
MCQ▾

Question

Excessive exposure of humans to UV-rays results in

(i) Damage to immune system

(ii) Damage to lungs

(iii) Skin cancer

(iv) Peptic ulcers

Choices

Choice (4) Response

a.

(i) and (iii)

b.

(i) and (ii)

c.

(iii) and (iv)

d.

(ii) and (iv)

Question number: 975

» Acids, Bases and Salts

Edit
MCQ▾

Question

Out of , which solution has higher value of pH?

Choices

Choice (4) Response

a.

b.

c.

None of the above

d.

Question does not provide sufficient data or is vague

Question number: 976

» Chemical Reactions and Equation

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match both the column and mark the correct option from the codes given below.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

(i)

Decomposition

(B)

(ii)

Combination

(C)

(iii)

Reduction

(D)

(iv)

Double Displacement

Choices

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

a.

  • (ii)
  • (i)
  • (iv)
  • (iii)

b.

  • (iii)
  • (i)
  • (iv)
  • (ii)

c.

  • (i)
  • (iv)
  • (ii)
  • (iii)

d.

  • (iv)
  • (iii)
  • (ii)
  • (i)