A metal that is widely used in the manufacture of paints and overhead electric cables is
aluminium
copper
iron
lead
Correct answer is A
No explanation has been provided for this answer.
Which of the following pollutants is not usually recycled?
Aluminium cans
Glass bottles
Nuclear wastes
Paper wastes
Correct answer is C
No explanation has been provided for this answer.
Which of the following industrial processes depends on the action of enzymes?
Liquefaction of air
Manufacture of soap
Brewing of beer
Catalytic cracking
Correct answer is C
The brewing of beer has to do with fermentation.
(CH 3)2CHCH2OH
CH3CH2CH(OH)CH3
(CH3)3COH
CH3CH2CH2CH2OH
Correct answer is C
No explanation has been provided for this answer.
An alkanol can be prepared by the reaction of an alkene with
concentrated tetraoxosulphate (VI) acid
bromine tetrachloroethane
aqueous potassium tetraoxomanganate (VII)
sodium hydroxide solution
Correct answer is A
An alkene reacts with conc. H\(_2\)SO\(_4\) to yield an alkyl hydrogen tetraoxosulphate (VI). The compound formed undergoes hydrolysis when boiled with water to yield an alcohol.