Which of the following fertilisers contains the least percentage of nitrogen?
Ammonium phosphate
Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills.
metalliferrous ores
The crushed material received for separation is called feed or
concentrate
Entropy of the system decreases, when
both a gas expands spontaneously from high pressure to low pressure. and water is converted into ice.
A gas performs the maximum work, when it expands
isobarically
Phenol can be converted to o-hydroxybenzaldehyde by
Reimer-Tiemann reaction
The rate of reaction between two reactants A and B decreases by a factor of 4 if the concentration of reactant B is doubled. The order of reaction with respect to reactant B is
2
Evaporation takes place at?
Any (All) temperature
POrbitals are ________ in shape?
Dumb bell
From which mineral is radium obtained -
Pitchblende
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