chemistry: exp. Test 2023

written by gogorabei | June 19, 2023

Results

-

Share your score!

Tweet your score!

#1. 21)The processes which are used to convert alkane consists of 5 atoms to insecticide consists of (18)z atoms are………

a)Strong heating then rapid quenching then halogenation then polymerization

a)Strong heating then rapid quenching then halogenation then polymerization

b)Polymerization then halogenation then strong heating then rapid quenching

b)Polymerization then halogenation then strong heating then rapid quenching

c)Strong heating then rapid quenching then polymerization then halogenation

c)Strong heating then rapid quenching then polymerization then halogenation

d)Halogenation then rapid quenching then strong heating then polymerization

d)Halogenation then rapid quenching then strong heating then polymerization

#2. 23)The molecular formula C5H10 O expresses……..

a)Ethyl propyl ether and pentanal

a)Ethyl propyl ether and pentanal

b)Butanoic acid and 3- Pentanol

b)Butanoic acid and 3- Pentanol

c)Pentatonic acid and 3- methyl butanone

c)Pentatonic acid and 3- methyl butanone

d)2- methyl butanal and pentanone

d)2- methyl butanal and pentanone

#3. 24)Which of the following steps are suitable to obtain red iron oxide …….

a)Heating iron in air to redness for short time

a)Heating iron in air to redness for short time

b)Adding dil. Sulphuric acid to iron II oxide then heat the product

b)Adding dil. Sulphuric acid to iron II oxide then heat the product

c)Heating iron II carbonate in absence of air

c)Heating iron II carbonate in absence of air

d)Passing stream of hot water vapour over hot iron at 500 0C

d)Passing stream of hot water vapour over hot iron at 500 0C