EASY
9th CBSE
IMPORTANT
Earn 100

1 mole of oxygen weighs as much as 4 moles of helium. What is the ratio of atoms of oxygen to the atoms of helium? 

Important Questions on Atoms and Molecules

MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 3 - Atoms and Molecules>ASSIGNMENTS FOR FORMATIVE ASSESSMENT>Q (iii)
24 g of magnesium has as many atoms as 12g of carbon. How many moles of carbon will weigh as much as 24 g of magnesium? 
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 3 - Atoms and Molecules>ASSIGNMENTS FOR FORMATIVE ASSESSMENT>Q (iv)
Name two non-metals that have lustre. 
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 3 - Atoms and Molecules>ASSIGNMENTS FOR FORMATIVE ASSESSMENT>Q (v)
Name a non-metal which occurs as liquid at room temperature. 
EASY
9th CBSE
IMPORTANT
Core science chemistry>Chapter 3 - Atoms and Molecules>ASSIGNMENTS FOR FORMATIVE ASSESSMENT>Q (vi)
What is the difference between molecular mass and g-molecular mass of an element. 
MEDIUM
9th CBSE
IMPORTANT
Core science chemistry>Chapter 3 - Atoms and Molecules>ASSIGNMENTS FOR FORMATIVE ASSESSMENT>Q (vii)
1.70 g of silver nitrate in solution form reacts with 0.585 g of sodium chloride in solution form. If the mass of sodium nitrate formed is 0.85 g, what is the mass of silver chloride formed.