When a beam of light passes front air into water, its speed:
A. increases
B. decreases
C. remains the same
D. None of above
When a beam of light passes front air into water, its speed: Read More »
Chemistry Mcqs
Soap is made by
A. mixing fats and acids
B. boiling fats and oils with an alkali
C. mixing soap base with chalk and fats
D. none of the above
Nitrogen gas was discovered by
A. J. Priestley
B. Dr. Philip Drinker
C. R.C. Funk
D. Daniel Rutherford
Nitrogen gas was discovered by Read More »
Dry air is:
A. good conductor of electricity
B. bad conductor of electricity
C. perfect insulator
D. perfect conductor
Humidity is:
A. discomfort due to heat
B. excess of heat in atmosphere
C. presence of water vapour in the air
D. absence of water vapour in the air