General Science for Competitive Exams

1. What are soaps?
[A]Sodium or potassium salts of heavier fatty acids
[B]Mixture of glycerol and alcohol
[C]Esters of heavy fatty acids
[D]Salts of silicates


2. Deep blue colour is imparted to glass by the presence of ____________________.
[A]Nickel oxide
[B]Cobalt oxide
[C]Iron oxide
[D]Cupric oxide


3. The vast resources of unutilised natural gas can be used in the production of ___________________.
[A]Synthetic petroleum
[B]Carbide
[C]Fertilisers
[D]Graphite


4. Paper is manufactured by ____________________________.
[A]Wood and bleaching powder
[B]Wood and resin
[C]Wood, sodium and bleaching powder
[D]Wood, calcium, hydrogen sulphite and resin


5. One fathom is equal to ___________________.
[A]30 feet
[B]100 cm
[C]6 feet
[D]6 meters