NSO Level 1- Science Olympiad (SOF) Class 10: Questions 1074 - 1078 of 1497

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Passage

Direction: Read the following passage and answer the question.

A silvery metal that resists corrosion even at high temperatures.

Metal is used in batteries, metal is resists corrosion and is used to plate other metals to protect them. Metal has a long history of being used in coins.

Other hand non-metal is colorless, odorless gas that is totally unreactive.

Non-metal is used as a cooling medium. Moreover, because of its low density non-metal is often used to fill decorative balloons, weather balloons and airships.

Question 1074 (3 of 3 Based on Passage)

Question MCQ▾

Among the following choices, which is not correct?

Choices

Choice (4)Response

a.

Non-metal has low melting and boiling points

b.

Metal react with oxygen to form basic oxides

c.

Non-metal Dull sound when hit with hammer

d.

Metal React with oxygen to form acidic oxides

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Question 1075

Question MCQ▾

If the absolute refractive indices of water, glass and diamond are 1.33,1.50 and 2.42, respectively, then which medium is optically densest?

Choices

Choice (4)Response

a.

Water

b.

Diamond

c.

Glass

d.

None of the above

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Question 1076

Question Match List-Ⅰ List-Ⅱ▾

Match column I and column II and select the correct option from the codes given below.

List-Ⅰ (Column I)List-Ⅱ (Column II)
(A)

Non convention source of energy

(i)

Coal

(B)

Hydro power plant

(ii)

Water

(C)

Convention source of energy

(iii)

Uranium

(D)

Nuclear power plant

(iv)

Nuclear energy

Choices

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

a.

  • (iv)
  • (ii)
  • (i)
  • (iii)

b.

  • (iii)
  • (i)
  • (ii)
  • (iv)

c.

  • (iv)
  • (iii)
  • (i)
  • (ii)

d.

  • (ii)
  • (i)
  • (iii)
  • (iv)

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Question 1077

Question MCQ▾

In a food chain, the third trophic level is always occupied by

Choices

Choice (4)Response

a.

Decomposers

b.

Herbivores

c.

Producers

d.

Carnivores

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Question 1078

Question MCQ▾

Read the given statement and mark the correct option.

Statement 1: Convex mirror in object and image is perpendicular to the mirror

Statement 2: Convex mirror has used in security mirror and side view mirrors in cars

Choices

Choice (4)Response

a.

Only statement 2 is correct

b.

Statements 1 and 2 are incorrect

c.

Statements 1 and 2 are correct

d.

Only statement 1 is correct

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