2000
Which of the following procedures is suitable for identifying the food colouring added to a pastry sample?
See more
2000 WAEC SSCE Chemistry Past Questions
2000
Which of the following procedures is suitable for identifying the food colouring added to a pastry sample?
See more
2000
If 20 cm3 of distilled water is added to 80 cm3 of 0.50 mol dm-3 hydrochloric acid, the concentration of the acid will change to
See more
2000
Which of the following on burning in air contributes to acid rain?
See more
2000
When sodium hydroxide solution is added to a solution of zinc salt, the white precipitate fromed redissolves in excess sodium hydroxide because
See more
2000
A colourless, odourless liquid T, gives effervesce with sodium trioxocarbonate (IV) and a white precipitate with silver trioxonitrate (V) solution T is mose probably
See more
2000
Two-organic substances are labelled K and L if K gave a blue-black colour with iodine solution and L gave a deep red precipitate with Million's reagent, it can be concluded that
See more
2000
Given that the electronic configuration of an element X is 1s22s22p63s 23p4, it can be deduced that X
See more
2000
What is the mass number of an element if its atom contains 10 protons, 10 electrons and 12 neutrons?
See more
2000
Allotropes of an element differ in their
See more
2000
A plastic which cannot be softened by heat is described as
See more
2000
Biotechnology is applied in the following except
See more
2000
P,Q,R and S are metals in the same group in the Periodic Table but in periods 3,4, 5 and 6 respectively which of them loses electrons least readily?
See more
2000
If 20 cm3 of distilled water is added to 80cm 3 of 0. 50 mol dm-3 hydrochloric acid, the new concentration of the acid will be
See more