Which of the following electrons are involved in chemical bonding?
a) inner shell electrons
b) valence shell electrons
c) all electrons
d) none of these
In CrO, the oxidation state of Cr is:
a) +1
b) +2
c) +3
d) +4
What is the chemical formula of common salt?
a) NaCl
b) Na2CO3
c) NH3
d) H2O
Soap is __________ in nature:
a) Alkaline
b) Acidic
c) Neutral
d) Indicator
The splitting of white light into seven colors on passing through a transparent medium like glass prism is called as
a) Rainbow
b) Reflecting prisms
c) Dispersion
d) Refractive index
The most important potassium fertilizer is:
a) Potassium chloride
b) Potassium nitrate
c) Potassium sulphate
d) Potassium phosphate
