Think different

Formula of Methane ??

• CH4

• M4

• C4H

• Me4

What will be the neutron of this element ?

Which gas or pollutant reduces the density of air ?

• Carbon dioxide

• Sulphur

• Chloroflourocarbons

• Nitrogen

A metal which forms a white deposit on its surface when exposed to moist air ?

• Potassium

• Lead

• Zinc

• Mercury

In which form does oxygen is not in the earth's crust ?

• Oxides

• Carbonates

• Nitrates

• Silicates

I am a brown coloured gas and I'm a mixture of nitric oxide and oxygen , who am I ?

• Laughing gas

• Nitrous oxide

• Nitric oxide

• Nitrogen dioxide

• Nitrogen monoxide

Name the gases which is used in making anaesthesia ?

I am a metal who does not react chemically and I am called as noble metal , who am I ?

• Ag

• Ar

• Au

• Sn

Put the appropriate product and balance it :-

4Fe + 3O2 -----> _________

• 3Fe2O4 . xH2O3

• 4Fe2O3 . xH20

• 2Fe2O3 . xH20

• 6Fe2O2 . xH2O

Name a non-toxic metal ?

• Lead

• Calcium

• Magnesium

• Tin

• Zinc