Elements, Compounds and Mixtures

How many atoms does Phosphorous molecule has?

• 2

• 1

• 3

• 5

• 4

What is the state of matter of Bromine in room temperature?

• Einstein - Bose Condensate

• Solid

• Liquid

• Gas

• Plasma

Which of the following are positively charged?

• Proton

• Neutron

• Electron

• Positron

• None of these

What does this represent?

• Periodic table

• All the 118 elements

• A random group of letters

• Many colours

What is the valency of Aluminium?

• 1

• 2

• -1

• -2

• None of these

Which of these elements have odour?

• NH₃

• Nh₃

• H₂

• N₂

• NH₄

Which elements have a non - poisonous nature?

• O₂, H₂, N

• O₂, H₂, N₂

• O, H₂, N₂

• O₂, H, N₂