9th Science SET 1 – Justfinder

9th Science Set1

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Free Online Best 9th Class Science Questions for improve your knowledge of Science Subject and General Knowledge for competitive exams. This 9th Science Set 1 test that contains 25 Multiple Choice Questions with 4 options. You have to select the right answer to a question.

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Question 1

Which of the following cannot be considered a form of matter?

A	atom
B	water
C	humidity
D	elctron

Question 2

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

A	Dispersion
B	tyndall effect
C	Brownian movement
D	Oscillation

Question 3

Which one of the following statements is not true?

A	The molecules in a solid vibrate about a fixed position
B	The molecules in a liquid are arranged in a regular pattern
C	The molecules in a gas exert negligibly small forces on each other, except during collisions
D	The molecules of a gas occupy all the space available

Question 4

Which one of the following set of phenomena would increase on raising the temperature?

A	Diffusion, evaporation, compression of gases
B	Evaporation, compression of gases, solubility
C	Evaporation, diffusion, expansion of gases
D	Evaporation, solubility, diffusion, compression of gases

Question 5

How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?

A	Precipitation
B	sublimation
C	Chromatography
D	Cetrifugation

Question 6

Which of the following property does not describe a compound?

A	It is composed of two or more elements
B	It is mixed in any proportion by mass
C	It is a pure substance.
D	It cannot be separated into constituents by physical means

Question 7

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______

A	Colloidal solution
B	Super saturated solution
C	Sublimation
D	Suspensions

Question 8

Which of the following phenomena always results in the cooling effect?

A	condensation
B	Evaporation
C	sublimation
D	all of the Above

Question 9

When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment____

A	Bromine cannot be heavier than air because it is going upwards against gravity
B	Air is heavier than bromine
C	Both air and bromine have the same density
D	Bromine is heavier than air

Question 10

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

A	Particles of a matter are randomly moving in all directions.
B	Kinetic energy of the particles of all maters remains the same at a particular temperature.
C	Kinetic energy of the particles increases with a rise in temperature
D	Particles of matter diffuse into each other on their own.

Question 11

In tincture of iodine, find the solute and solvent?

A	alcohol is the solute and iodine is the solvent
B	iodine is the solute and alcohol is the solvent
C	any component can be considered as solute or solvent
D	tincture of iodine is not a solution

Question 12

A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is_____

A	krpton
B	kerosene
C	carbon steel
D	carbondioxide

Question 13

When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in_______

A	Centrifugation
B	Fractional distillation
C	Evaporation
D	Tunneling

Question 14

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

A	sodium
B	pottasium
C	mercury
D	bromine

Question 15

When two liquids do not mix, they form two separate layers and are known as_____

A	Miscible liquids
B	Immiscible liquids
C	Saturated liquids
D	Super saturated liquids

Question 16

A pure substance which is made up of only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is referred to as_____

A	a compound
B	an element
C	a molecule
D	a mixture

Question 17

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

A	Aluminium
B	silicon
C	graphite
D	gold

Question 18

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

A	Latent heat
B	Lattice energy
C	loss of heat
D	none of the Above

Question 19

The correct procedure of heating iron-sulphur mixture to prepare iron sulphide is

A	Heat the powder mixture at the base of the test tube using a blue flame throughout.
B	Heat the iron filings and sulphur mixture in the middle of the test tube using yellow flame throughout.
C	Heat the powder mixture at the top of the test tube using an orange flame throughout.
D	Heat the iron filings-sulphur mixture at 3/4 quarters of the test tube using a red flame throughout.

Question 20

When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation ______

A	Rises very slowly
B	Rises rapidly until steam is produced
C	First rises and then becomes constant
D	Does not rise at all

Question 21

If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of______

A	evaporation
B	percipitation
C	condensation
D	sublimation

Question 22

Which of the following elements is not a metalloid?

A	boron
B	silicon
C	germanium
D	tunsdten

Question 23

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

A	Releases some heat
B	Absorbs some heat
C	Neither absorbs nor releases heat
D	Absorbs exactly 3.34 x 105J/kg of heat

Question 24

Which of the following statement is correct?

A	Materials existing as liquids at room temperature have their melting and boiling points lower than that of room temperature
B	The phenomenon involving the transition of a substance from solid to liquid state is called sublimation
C	To convert a temperature on the Celsius scale to Kelvin scale, subtract 273 from the given temperature
D	The density of ice is less than that of water.

Question 25

On converting 308 K, 329 K and 391 K to Celsius scale, the correct sequence of temperatures_____

A	33°C, 56°C and 118°C
B	35°C, 56°C and 119°C
C	35°C, 56°C and 118°C
D	56°, 119°C and 35° C

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