Chemical Reactions and Equation (NSO Level 1- Science Olympiad (SOF) Class 10): Questions 1 - 6 of 84

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Question number: 1

» Chemical Reactions and Equation

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MCQ▾

Question

In the balanced equation

The value of the a, b, c and d, are respectively

Choices

Choice (4) Response

a.

1,1, 2,3

b.

2,3, 4,3

c.

1,2, 2,3

d.

1,3, 2,3

Question number: 2

» Chemical Reactions and Equation

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MCQ▾

Question

Iron rusts more quickly in contact with_

Choices

Choice (4) Response

a.

Copper

b.

Zinc

c.

Potassium

d.

Calcium

Question number: 3

» Chemical Reactions and Equation

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MCQ▾

Question

Which of the following is not a single displacement reaction?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 4

» Chemical Reactions and Equation

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MCQ▾

Question

What will happen if ammonium chloride is heated?

Choices

Choice (4) Response

a.

Explosion will occur.

b.

Ammonium chloride will sublime on test tube

c.

Releases

d.

All of the above

Question number: 5

» Chemical Reactions and Equation

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MCQ▾

Question

What does the color of the change when heated?

Choices

Choice (4) Response

a.

Colourless

b.

Dark blue

c.

Black

d.

None of the above

Question number: 6

» Chemical Reactions and Equation

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Match List-Ⅰ List-Ⅱ▾

Question

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

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

(i)

Combination

(B)

(ii)

Decomposition

(C)

(iii)

Single displacement

(D)

(iv)

Double Displacement

Choices

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

a.

  • (iv)
  • (ii)
  • (i)
  • (iii)

b.

  • (iii)
  • (ii)
  • (i)
  • (iv)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (iv)
  • (ii)
  • (iii)
  • (i)

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