JAMB has a tendency of always repeating questions, and we are going to show you some of the most repeated Chemistry Past Questions.

Question 1
The alkanes are called paraffins because
(a) They are unstable
(B) They have little affinity for reaction✅
(C)They combust easily
(D) They are used as fuel industrially

Question 2

Alkanes can be synthesized by any of these methods except
(a) Reaction of zinc-copper couple with ethanol and ethyl iodide
(b) Reaction of aluminum carbide and cold water
(C) Reaction of sodium alkanoate with soda lime
(D) Heating benzoic acid with calcium oxide✅

Question 3

Gobar gas is used as an industrial fuel,it’s constituents are
(a)Propane and pentane
(B) Phosphine and methane
(C) Methane and carbon dioxide✅
(D) Phosgene and butane

Question 4

In the pyrolysis of alkanes,which of these is not a suitable catalyst
(a) Manganese dioxide
(b) Alumina
(C)Silica
(D) Platinum✅

Question 5

In the alkane synthesis,quick lime is added to the caustic soda due to what reason
(a)Caustic soda is deliquescent
(B) Caustic soda attacks glass
(C) Both✅
(D) Neither

Question 6

The chlorination of methane occurs in the presence of ultraviolet light but it can be made to occur in the dark in the presence of…….. Catalyst
(a) Tetraethyl lead✅
(B) Carbon disulfide
(C) Ammonia
(D) Palladium

Question 7

The Halo alkane used to preserve biological specimens is
(a)Monochloro methane
(B)Dichloro methane
(C) Trichloromethane✅
(D)Tetrachloro methane

Question 8

The Halo alkane with an antiseptic odour is
(a)Iodoform✅
(B)Chloroform
(C)Fluoroform
(D)Bromoform

Question 9

The product of the combustion of alkanes are
(A)Soot and steam
(B) Carbon dioxide and steam✅
(C)Carbon dioxide and water
(D)Carbon monoxide and steam

Question 10

The vital force theory was proposed by
(a)Jons Berzelius✅
(B) Frederick wöhler
(C)Kolbe
(D) Berthelot

Question 11

A mixture of methane and oxygen is heated in the presence of…… Catalyst to yield methana... Read more via https://examsoup.com.ng/2024/03/05/jamb-most-repeated-chemistry-questions-and-answers/