Solved Chemistry MCQS
In public urinals, we observe some nascent smell. This smell is due to
Hydregen present in air reacts with nitrogen forming NH3
Formation of sulphonic acid by urea of urine
Hydrolysis of urea of urine by urease of atmosphere into NH3 and CO2
Reaction of CO2of atmosphere with urea mononitrate in urine
The number of oxygen atoms in 4.4 g of CO2 is approximately
6 x 1022
1.2 x 1023
12 x 1023
6 x 1023
An electrolyte
Gives ions only when dissolved in water
Possesses ions even in solid state
Gives ions only when electricity is passed
Forms complex ions in solution
Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH4or LiAIH4?
2-Methyl-2-propanol
1-Propanol
Ethanol
2-Propanol
Hydrogen chloride molecule contains
Electrovalent bond
Double bond
Co-ordinate bond
Covalent bond
Hypo is used to photography for
Picture printed
The fixation of picture
The colour of picture
Developing picture
The alkali metal which is liquid at 15
K
Na
Cs
None
When electrons revolve in stationary orbits,
There is no change in energy level
They vecome stationary
There is increase in energy
They are gaining kinetic energy
Aluminothermy used for on the spot welding of large iron structure is based upon the fact that
Reaction between iron and oxygen is endothermic.
As compared to iron, aluminium has greater affinity for oxygen
As compared to aluminium, iron has greater affinity for oxygen
Refraction between aluminium and oxygen is endothermic
The rotation of two carbon atoms joined by double bond would happened only if
Both bonds are broken
None of above
Pibond is broken
Sigma bond is broken
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