Chemistry

You can't live without water! What is its chemical formula?

• H₂

• O₂

• H₂O

• H₂O₂

Who is credited with the invention of the modern periodic table?

• Mendel

• Mendeleev

• Nobel

• Newland

The symbol Ag stands for which element?

• Silver

• Gold

• Aluminium

• Antimony

Answer explanation

Ag stands for argentum, which is an old name for silver. The term "argent" survives, meaning silvery.

Anything that has mass and occupies space is called (a)   .

Which among the following are the unit representing temperature?

• Kelvin

• Celsius

• Ampere

• Kilogram

Which among these have definite volume but no definite shape?

• 
• 
• 

A drop of food coloring spreading out in a cup of water is an example of which transport process?

• Osmosis

• Diffusion

• Effusion

• Vapour pressure

Which among the following is not a noble gas?

• Helium

• Hydrogen

• Bromine

• Radon

In a solution of saltwater (a saline solution), salt is the:

• Solvent

• Colloid

• Sol

• Solute

Elements in modern periodic table is arranged in basis of (a)