NSO Level 1- Science Olympiad (SOF) Class 10: Questions 919 - 923 of 986

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Question 919

Question

MCQ▾

Which of the following groups contain only non-biodegradable items?

Choices

Choice (4)Response

a.

Fruit peels, cake and lime juice

b.

Plastic, Bakelite, DDT

c.

Cake, wood and grass

d.

Grass, flowers and leather

Question 920

Question

MCQ▾

Which one is not correct?

Formic acid is used in

Choices

Choice (4)Response

a.

Preservative and antibacterial agent

b.

Various cleaning products

c.

Fuel cells

d.

None of the above

Question 921

Question

MCQ▾

Which is not an example of Calcination?

Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

Question 922

Question

MCQ▾

A proton moves freely in a magnetic field. Which of the following property of a proton changes?

Choices

Choice (4)Response

a.

Velocity

b.

Gravity

c.

Weight

d.

All of the above

Question 923

Question

MCQ▾

Which is a not correct statement for law of reflection?

Statement 1: The angle of incidence is equal to the angle of reflection

Statement 2: The incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the different plane

Choices

Choice (4)Response

a.

Statements 1 and 2 are incorrect

b.

Statements 1 and 2 are correct

c.

Only Statement 1 is correct

d.

Only Statement 2 is correct

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