The present undesirable matrix in mineral is called as :
flux
slag
gangue
alloy
C.
gangue
The matrix present in mineral is called as gangue.
The work of conc. H2SO4 in esterification process is as :
dehydrating agent and catalyst
dehydrating agent
hydrolysing agent
catalyst
Which one will not show Cannizzaro reaction ?
Trimethyl acetaldehyde
Formaldehyde
Acetaldehyde
Benzaldehyde
When 23 g sodium metal reacts with methyl alcohol , it will form :
1 moles of H2
2 mole of H2
0.5 mole of H2
All of the above
In the presence of ether , 2-choloropropane reacts with sodium and form :
n-hexane
2 , 3 - dimethyl butane
n - hexene
CH3CHCH2
Which inorganic compound on heating changes into organic compound ?
Ammonium cyanide
Sodalime
Potassium cyanide
Sodamide
Which of the following compound will not show aldol condensation ?
CH3COCH3
HCHO
CH3CHO
CH3CH2CHO
The bad odour compound formed by the reaction between chloroform and aniline in the presence of alcoholic KOH :
acetylene
nitro benzene
phenyl isocyanate
carbylamine
The condensation product of reaction between phenol and phthalic anhydride :
methyl orange
salicylic acid
phenol red
phenolphthalein