NSO Level 1- Science Olympiad (SOF) Class 8: Questions 601 - 605 of 1076

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Passage

Study the pictures carefully and answer the question

Image of safety Matchstick

Image of Safety Matchstick

Image of safety Matchstick

Question number: 601 (3 of 6 Based on Passage) Show Passage

» Combustion and Flame

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

It gives necessary friction for combustion

b.

It acts an oxidiser

c.

It is the fuel for combustion

d.

It ignites the fuel

Question number: 602 (4 of 6 Based on Passage) Show Passage

» Combustion and Flame

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MCQ▾

Question

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 number: 603 (5 of 6 Based on Passage) Show Passage

» Combustion and Flame

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MCQ▾

Question

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 number: 604 (6 of 6 Based on Passage) Show Passage

» Combustion and Flame

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MCQ▾

Question

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 number: 605

» Combustion and Flame

Edit
MCQ▾

Question

Crackers on ignition produce sound. The reason is

Choices

Choice (4) Response

a.

Crackers are explosives

b.

Crackers when ignited move fast and hit on obstacles to produce sound

c.

Explosion is a rapid reaction where heat light and sound are produced

d.

Both a. and c. are correct

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