VSSC Chemical Operator Paper 2016

Vikram Sarabhai Sapce Centre Chemical Operator Paper 2016

Which of the following is not a mixture?
(a) Distilled water
(b) LPG
(c) Gasoline
(d) Iodized table salt

Light year is a measure of
(a) Time
(b) Distance
(c) Mass
(d) None of the above

Organic molecules containing hydroxyl group are called
(a) Esters
(b) Ethers
(c) Aldehydes
(d) Alcohols

Pressure of gas is due to
(a) Intermolecular attraction between gas molecules
(b) Collision of gas molecules against the wall of container
(c) Random movement of gas molecules
(d) None of the above

All naturally occuring processes proceed spontaneously in a direction which leads to
(a) Increase in entropy
(b) Increase in enthalpy
(c) Decrease in entropy
(d) Increase in free energy

Potassium is kept in
(a) Kerosene
(b) Distilled water
(c) Ammonia
(d) Alcohol

Homolytic fission of a hydrocarbon will liberate
(a) Carbocation
(b) Carbanion
(c) Free radical
(d) Carbene

Noise pollution level in a chemical plant is expressed in
(a) Hertz
(b) Roentgen
(c) Decibel
(d) None of the above

The gas which caused Bhopal gas tragedy in 1984
(a) Carbon monoxide
(b) Methylisocynate
(c) Hydrogen cyanide
(d) Sulphur dioxide

As lead storage battery is charged
(a) Lead electrode becomes coated with lead sulphate
(b) Sulphuric acide is regenerated
(c) Lead oxide dissolves
(d) concentration of sulphuric acid decreases