Yellow phosphorus is kept in
water
kerosene
ether
alcohol
A.
water
Phosphorus (white or yellow) is kept preserved in water as it catches fire in air at normal temperature and it does not react with water. It is highly reactive.
An element 'Y' emits one -and two - particles to give 'X'. X and Y are
isotones
isobars
isotopes
isoelectronics
For the reaction, 2NO2 2NO + O2, the value of Kp is equal to K. What will the value of Kp for reaction,
NO + O2 NO2
Which one of the following elements, is a component of a compound essential for photosynthesis ?
Iron
Calcium
Barium
Magnesium
The correct order of stability of carbocations, is :
1 < 2 < 3 < CH3
H3 < 1 < 2 < 3
3 < 2 < 1 < H3
2 < 3 < 1 < H3
The IUPAC name of the following compound is
bicyclo [2, 2, 0] octane
bicyclo [0, 2, 2] hexane
bicyclo [2, 1, 1] hexane
bicyclo [2, 2, 0] hexane
The following compound can not exhibit
CH3CH = CH - CH(OH).COOH
geometrical isomerism
optical isomerism
metamerism
position isomerism