NSO Level 1- Science Olympiad (SOF) Class 10: Questions 861 - 865 of 986

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Question number: 861

» Magnetic Effects of Electric Current

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MCQ▾

Question

Read the given statements for magnetic field and mark the correct option

Statement 1: It is a vector quantity, having both direction & magnitude

Statement 2: SI Unit of a magnetic field is Tesla

Choices

Choice (4) Response

a.

Statements 1 and 2 are correct

b.

Only statement 1 is correct

c.

Only statement 2 is correct

d.

Statements 1 and 2 are incorrect

Question number: 862

» Light - Reflection and Refraction

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MCQ▾

Question

Object is at infinity convex mirror, the image formed is

Choices

Choice (4) Response

a.

Behind the mirror at focus, virtual and erect and much smaller than the object

b.

Behind the mirror, virtual, erect, and larger than the object

c.

Beyond the centre of curvature, real and inverted and larger than the object

d.

Between the pole and focus, virtual and erect and smaller than the object

Question number: 863

» Metals and Non - Metals

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MCQ▾

Question

An element reacts with oxygen to give a black colour compound. This compound reacts with hydrogen to give water. The element is likely to be

Choices

Choice (4) Response

a.

Zinc

b.

Nickle

c.

Iron

d.

Copper

Question number: 864

» Chemical Reactions and Equation

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MCQ▾

Question

Which of the following is not a chemical reaction?

Choices

Choice (4) Response

a.

Grilling a hamburger

b.

Milk going sour

c.

Vaporization of liquid nitrogen

d.

Electroplating a metal

Question number: 865

» Metals and Non - Metals

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MCQ▾

Question

An alloy which does contain tin is

Choices

Choice (4) Response

a.

Duralumin

b.

Brass

c.

Steel

d.

Pewter