NSO Level 1- Science Olympiad (SOF) Class 8: Questions 726 - 729 of 1076

Access detailed explanations (illustrated with images and videos) to 1076 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time!

View Sample Explanation or View Features.

Rs. 450.00 or

How to register?

Question number: 726

» Metals and Non-Metals

Edit
MCQ▾

Question

Diya was doing experiment. The steps of procedure are given here.

i) She took a test tube and put small pieces of copper wire in it.

ii) Added 4 to 5 drops of dilute sulphuric acid in test tube.

iii) Brought a lighted match stick near the mouth of the test tubes

She observed that the match stick burnt with a pop sound. What does the pop sound indicate?

Choices

Choice (4)Response

a.

A gas which extinguish the fire is produced due to the chemical reaction.

b.

A gas which helps in combustion is produced due to chemical reaction.

c.

A highly inflammable gas is produced due to the chemical reaction

d.

Question does not provide sufficient data or is vague

Question number: 727

» Coal and Petroleum

Edit
MCQ▾

Question

Hydrogen is a highly inflammable gas. The product formed when hydrogen burns in air is

Choices

Choice (4)Response

a.

Hydrogen peroxide

b.

Hydroxide

c.

Water

d.

All of the above

Question number: 728

» Reproduction in Animals

Edit
MCQ▾

Question

Which of the following is not an example of an oviparous animal?

Choices

Choice (4)Response

a.

Frog

b.

Crocodile

c.

Duck

d.

Blue whale

Question number: 729

» Force and Pressure

Edit
MCQ▾

Question

Frictional force is applied in the direction of

Choices

Choice (4)Response

a.

Opposite to the object

b.

The object

c.

Downwards

d.

None of the above

Developed by: