NSO Level 1- Science Olympiad (SOF) Class 10: Questions 808 - 810 of 986

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Question number: 808

» Our Environment and Its Management

Edit
Match List-Ⅰ List-Ⅱ▾

Question

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)

Biodegradable substances

(i)

It consists of a number of interconnected food chains, involving many organisms

(B)

Food web

(ii)

Substances that cannot be broken down into simpler ones by biological processes

(C)

Food chain

(iii)

It is a series of organisms feeding on one another

(D)

Non-biodegradable substances

(iv)

Substances that are broken down into simpler substances by biological processes

Choices

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

a.

  • (ii)
  • (i)
  • (iv)
  • (iii)

b.

  • (iii)
  • (ii)
  • (iv)
  • (i)

c.

  • (iv)
  • (i)
  • (iii)
  • (ii)

d.

  • (iv)
  • (ii)
  • (iii)
  • (i)

Question number: 809

» Metals and Non - Metals

Edit
MCQ▾

Question

Which of the not an oxide ore of Aluminum?

Choices

Choice (4)Response

a.

Common salt

b.

Trona

c.

Chile saltpeter

d.

Borax

Question number: 810

» Metals and Non - Metals

Edit
MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: All metals react with oxygen to form metal oxides

Statement 2: All non-metals react with oxygen to form acidic or neutral oxides.

Choices

Choice (4)Response

a.

Only Statement 2 is true.

b.

Statements 1 and 2 are wrong.

c.

Statements 1 and 2 are true.

d.

Only Statement 1 is true.

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