HARD
9th CBSE
IMPORTANT
Earn 100

Fractional distillation is suitable for separation of miscible liquids with a boiling point difference of about 25 K or less. What part of fractional distillation apparatus makes it efficient and possess an advantage over a simple distillation process. Explain using a diagram.

Important Questions on Is Matter Around Us Pure?

HARD
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2B>Q 3
You are provided with a mixture containing sand, iron filings, ammonium chloride and sodium chloride. Describe the procedures you would use to separate these constituents from the mixture.
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2C>Q 1
Which amongst the following is not the characteristic of a physical change?
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2C>Q 2
Which amongst the following is not the characteristic of a chemical change?
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2C>Q 3
Which amongst the following is not a chemical change?
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2C>Q 4
Which amongst the following is not a chemical change?
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2C>Q 5
Which is the incorrect statement, when ammonium chloride is sublimated?
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2C>Q 6
Sublimation of naphthalene is an example of:
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 2 - Is Matter Around Us Pure?>EXERCISE 2C>Q 7
Burning of magnesium ribbon is an example of :