In water molecule, Hydrogen & water are held together by ______ bond.

A. Ionic
B. Covalent
C. Hydrogen
D. Dating

The chemical symbol for silver is __________?

A. Au
B. Ag
C. Sv
D. At

The only non metal exists in liquid state is ___________?

A. Mercury
B. Bromine
C. Phosphorus
D. Iodine

Z number for chlorine is __________?

A. 35.5
B. 17
B. 15
D. 21

Elastic rebound theory explains:

A. Formation of rocks
B. Structure of solids
C. Causes of earthquake
D. None of these

The term ‘white coal’ is sometimes referred to which of the following?

A. Geothermal energy
B. Wind energy
C. Hydroelectricity
D. Biomass energy

Nearest star to the sun is: ___________?

A. Proxima centauri
B. Alpha scorpius
C. Beta orionis
D. Vegetal

Thanatology is the study of _________?

A. Careers
B. Being
C. Death
D. Soul

Vaccination is synonymous with ___________ immunity?

A. Artificial active
B. Natural active
C. Allergy
D. None of these

The product On the oxidation of 2°Alcohol is ________?

A. Aldehyde
B. Ketone
C. Carboxylic acid
D. Ester