EASY
6th ICSE
IMPORTANT
Earn 100

Which of the following represents the correct formula of the compounds?

Na(OH)2, CuO2, BaSO4, Cu(SO4)2, KCLO3, K2Cr2O7

Important Questions on Elements, Compounds and Mixtures

EASY
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>Test Your Understanding>Q 1
Which of the following is a monovalent element?
EASY
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>Test Your Understanding>Q 2

Write the names of the elements present in the following compound.

Ammonia

EASY
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>Test Your Understanding>Q 3
Which of the following is trivalent?
EASY
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>Test Your Understanding>Q 4
Which of the following represents a homogeneous mixture? 
EASY
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>Test Your Understanding>Q 1
Your teacher dissolved a small amount of solid copper sulphate in a tumbler half-filled with water. Which method would you use to get back solid copper sulphate from the solution?
EASY
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>Test Your Understanding>Q 2
Filtration using a filter paper can be used to separate
MEDIUM
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>Test Your Understanding>Q 3
How will you separate water and oil from their mixture?
EASY
6th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 2 - Elements, Compounds and Mixtures>EXERCISES>Q 1
How many elements are known at present?