Chemistry practice

The gas obtained by heating potassium chlorate is

• Cl2

• O2

• CO2

• None

How many valence elecrons on an atom of phosphorous has?

• 0

• 1

• 2

• 5

The monomer of polyethene is

• Propylene

• Methylene

• Ethylene

• Acetylene

Which of the following has electrovalent bond?

• O2

• H2

• CH4

• CaCl2

What is the pH value of human blood?

• 7

• 2.5

• 7.4

• 11.5

Aluminum is in the group

• 2nd

• 3rd

• 4th

• 5th

Which of the following is diatomic?

• Sodium

• Oxygen

• Iron

• Mercury

The greenhouse effect is caused by gases like

• Helium

• Nitrogen

• Oxygen

• Carbondioxide

Chief constituent of natural gas is

• Methane

• Ethane

• Butane

• Propane

Which of the following is not ultimately derived from the sun's energy?

• Geothermal Energy

• Wind Energy

• Fossil fuels

• Biomass