Quiz Science class 9th

Question 1 / 10

Si unit of acceleration-

M/s

M/s square

Km/s square

Km/hour square

Question 2 / 10

When water at 0°C freezes to form ice at the same temperature of 0°C, then it :

Absorbs some heat

Releases some heat

Neither absorbs nor releases heat

Absorbs exactly 3.34 x 105J/kg of heat

Question 3 / 10

Which of the following causes the temperature of a substance to remain constant while it is undergoing a change in its state?

Latent heat

Lattice energy

Loss of heat

None of these

Question 4 / 10

What is the name of the metal which exists in liquid state at room temperature?

Sodium

Potassium

Mercury

Bromine

Question 5 / 10

The continuous zig-zag movement of colloidal particles in a dispersion medium is called

Oscillation

Dispersion

Tyndall effect

Brownian movement

Question 6 / 10

Which of the following property does not describe a compound?

It is a pure substance.

It is mixed in any proportion by mass

It cannot be separated into constituents by physical means

It is composed of two or more elements

Question 7 / 10

According to the definition of pure substance, which of the following is a pure substance?

Ice

All of these

Mercury

Iron

Question 8 / 10

Which of the following non-metal is a good conductor of electricity?

Graphite

Silicon

Gold

Aluminium

Question 9 / 10

Which of the following statement is not true regarding the characteristic of matter?

Particles of a matter are randomly moving in all directions.

Kinetic energy of the particles of all maters remains the same at a particular temperature

Kinetic energy of the particles of all maters remains the same at a particular temperature.

Particles of matter diffuse into each other on their own.

Question 10 / 10

Heterogeneous mixture in which the solute particles do not dissolve and remain suspended throughout the solvent and the solute particles can be seen with the naked eye is known as :

Suspensions

Colloidal solution

Super saturated solution

Sublimation

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