NSO Level 1- Science Olympiad (SOF) Class 8: Questions 600 - 604 of 1175

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Passage

Study the pictures carefully and answer the question

Safety Matchstick

Question 600 (2 of 6 Based on Passage)

Question

MCQ▾

When matchsticks are struck against rubbing surface, red phosphorous

Choices

Choice (4)Response

a.

Reacts with potassium chlorate

b.

Ignite antimony disulphide

c.

Converts into white phosphorous

d.

Question does not provide sufficient data or is vague

Question 601 (3 of 6 Based on Passage)

Question

MCQ▾

The head of the safety match sticks contain potassium chlorate, sulphur and glass powder. The role of sulphur here is

Choices

Choice (4)Response

a.

It gives necessary friction for combustion

b.

It acts an oxidiser

c.

It ignites the fuel

d.

It is the fuel for combustion

Question 602 (4 of 6 Based on Passage)

Question

MCQ▾

The head of the safety match sticks contain potassium chlorate, sulphur and glass powder. The role of potassium chloride here is

Choices

Choice (4)Response

a.

It gives necessary friction for combustion

b.

It is the fuel for combustion

c.

It ignites the fuel

d.

It acts an oxidiser

Question 603 (5 of 6 Based on Passage)

Question

MCQ▾

The sides of the match box contain red phosphorus, glue and glass powder. The role of phosphorus is

Choices

Choice (4)Response

a.

It is the fuel for combustion

b.

It ignites the fuel

c.

It acts an oxidiser

d.

It gives necessary friction for combustion

Question 604 (6 of 6 Based on Passage)

Question

MCQ▾

The head of the safety match sticks contain

Choices

Choice (4)Response

a.

Potassium chlorate

b.

Sulphur

c.

Both a. and b. are correct

d.

None of the above

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