MEDIUM
9th CBSE
IMPORTANT
Earn 100

Give reason:

We can easily move our hand in air, but to do the same through a solid block of wood, we need a karate expert.

Important Questions on Matter in Our Surroundings

HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 4
Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why?
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 1
Convert the following temperature to Celsius scale:
(a) 300 K
(b) 573 K
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 2
What is the physical state of water at?
(a) 250 Co
(b) 100 Co
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 3
For any substance, why does the temperature remain constant during the change of state?
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 4
Suggest a method to liquefy atmospheric gases.
HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 1
Why does a desert cooler cool better on a hot dry day?
HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 2
How does the water kept in an earthen pot (matka) become cool during summers?
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 1 - Matter in Our Surroundings>Questions>Q 3
Why does our palm feel cold when we put some acetone or petrol or perfume on it?