Glucose can be obtained from starch by
hydrogenation
dissoiation
hydrolysis
dialysis
dehydration
Correct answer is C
No explanation has been provided for this answer.
2.73cm3
28.3cm3
37.3cm3
273cm3
283cm3
Correct answer is B
No explanation has been provided for this answer.
Sodium metal is produced at the anode
Sodium amalgam is formed at the cathode
Oxygen gas is produced at the anode
The grahite anode dissolves
The resulting solution becomes acidic
Correct answer is C
No explanation has been provided for this answer.
When naphthalene on heating changes from the solid state directly to the gaseous state it undergoes
evaporation
sublimation
decomposition
combustion
ionisation
Correct answer is B
No explanation has been provided for this answer.
Calcium is usually extracted by the electrolysis of its
trioxonitrate (V)
tetraoxosulphate (IV)
oxide
hydride
chloride
Correct answer is E
No explanation has been provided for this answer.