EASY
9th CBSE
IMPORTANT
Earn 100

What is dry ice?

Important Questions on Matter in Our Surroundings

HARD
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 2
Name the factors which can cause increase in the rate of evaporation of a liquid.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 3

Water kept in an earthen pot becomes cold after some time. Give reason.

MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 4
Steam burn is more painful than the burn from hot water. Give reason.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 5
Name the physical state of water under each one of the following conditions.
(a) At 25 °C and under atmospheric pressure.
(b) At 0 °C and under atmospheric pressure.
(c) At 100 °C and under atmospheric pressure.
 
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 6
Convert the following temperature into Kelvin scale.
25 °C 
 
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 6
Convert the following temperature into Kelvin scale.
27 °C        
 
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 6

Convert the following temperature into Kelvin scale.

373 °C

MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 1 - Matter in Our Surroundings>Questions as per the Guidelines of CBSE>Q 7

Convert the following temperature into Celsius scale.

298 K