Acids are substances that yield H+ in acqueous solutions while bases yield OH?ions. In a neutral solution
A.there are no H+
B.there are no OH?
C.H+ and OH- are present in very small but equal concentration
D.[H+] + [OH-] = 1
Category: Chemical Technology Mcqs
The producer gas is composed of
A.CO and CO2
B.CH4 and CO2
C.CH4 and C2H4
D.CO N2 and H2
In a fuel cell
A.electrical energy is converted into chemical energy
B.chemical energy is converted into electrical energy
C.electrical energy is converted into mechanical energy
D.mechanical energy is converted into electrical energy
The setting of plaster of Paris takes place with
A.loss of CO2
B.hydrolysis
C.hydration
D.dehydration
During the electrolysis of sodium chloride the anodic reaction is
A.oxidation of sodium ions
B.reduction of sodium ions
C.oxidation of chloride ions
D.reduction of chloride ions
For the production of sulphuric acid chamber process was developed first but produced acid of concentration
A.less than 80%
B.98%
C.100%
D.95%
For blasting purposes TNT is mixed with
A.NH4CI
B.NH4NO3
C.NH4NO2
D.(NH4)2SO4
The most favourable conditions of temperature and pressure for the oxidation of sulphur dioxide to sulphur trioxide are
A.low temperature high pressure
B.low temperature low pressure
C.high temperature high pressure
D.high temperature low pressure
Gypsum is added to clinker during cement manufacture to
A.decrease the rate of setting of cement
B.make the cement impervious
C.bind the particles of calcium silicate
D.to facilitate the formation of colloidal gel
Which of the following is not an explosive?
A.Calcium ammonium nitrate
B.Nitroglycerine
C.Trinitrotoluene
D.Cellulose nitrate
