5. Substances in the Surrounding - their properties and state 6th class science

 

5. Substances in the Surrounding - their properties and state

Q1.When a substance changes from one state to another state, the process is called........

1.Temperature change
2.Changes
3.Change state of the substance
4.Transformation

Q2.In the 19th century, the scientist ............. showed that the characteristic properties of a substance.

1.Carolus Linnaeus
2.Ray
3.J. Willard Gibbs
4.Roy

Q3.A ............. is used to measure temperature.

1.Hydrometer
2.Thermometer
3.Litre
4.Centimeter

Q4.............. is the unit of measuring temperature.

1.cm
2.kg
3.litre
4.°C

Q5.Boiling point of water is ............

1.100°C
2.50°C
3.60°C
4.90°C

Q6.Freezing point of the water ................

1.100°C
2.10°C
3.0°C
4.4°C

Q7.When water vapour cools, it is converted into water again. This process is called ...........

1.Boiling
2.Freezing
3.Condensation
4.Ebullition

Q8.Boiling point and Condensation point of the water the same.

1.True
2.False
3.
4.

Q9.Find out the freezing point of the candle.

1.100°C
2.50°C
3.60°C
4.30°C

Q10.The temperature of air in the freezer of a refrigerator is around...........

1.0°C
2.-5°C
3.-1°C
4.-18°C

Q11.Freezing point and Melting point of the water are ...............

1.Diffrent
2.Same
3.Not known
4.None of the above

Q12.Dry ice means -

1.Ice
2.Liquid Nitrogen
3.Solid carbon dioxide
4.None of the above

Q13. ............. is melted to make glass.

1.Sand
2.Glass
3.Oxygen
4.Plastic

Q14................ is used in animal husbandry.

1.Dry ice
2.Oxygen
3.Liquid nitrogen
4.Vapour

Q15.The change of a solid subsatnce directly into a gas is called ...............

1.Transformation
2.Sublimation
3.Electricity
4.Fluidity

Q16.Substances break into a small pieces or particles. This property of substances is called ........

1.Hardness
2.Elasticity
3.Fluidity
4.Brittleness

Q17.The rubber band and the sponge go back to their original shape. This property is called.......

1.Elasticity
2.Hardness
3.Fluidity
4.Brittleness

Q18.The property of a substance of getting dissolved is called its ...............

1.Transparency
2.Conductivity
3.Fluidity
4.Solubility

Q19.When we can look through a substance. This property of the substance is called.......

1.Conductivity
2.Fluidity
3.Transparency
4.Solubility

Q20.Metals can be converted into sheet by hammering. This property of metals is called ..........

1.Malleability
2.Conductivity
3.Solubility
4.Hardness