- Air and fire
- Air and oil
- Air and water
- Water and oil
Choose Answer :
(ii)When a small amount of common salt is dissolved in a glass of water the mixture formed is:
- Heterogeneous
- Homogeneous
- Immiscible
- Suspension
Choose Answer :
(iii) A chemist should acquire all of the following skills except:
- Experimentatio
- Observation
- Problem identification
- Surgery
Choose Answer :
(vi) An important property of oxygen which distinguishes it from other gases is that it:
- Burns and supports combustion
- Burns but does not support combustion
- Neither burns nor supports combustion
- Supports combustion but does not burn
Choose Answer :
(v) The process of chlorination in water treatment aims at:
- Forming suspension
- Killing micro-organisms
- Making syrup
- Removing bad odour
Choose Answer :
(vi) One of the following is not correct about coke being a better fuel than coal as it:
- Does not produce carbon dioxide gas
- Does not produce poisonous gas
- Has a higher heat content
- Is clean and smokeless
Choose Answer :
(vii) Class E fire can best be extinguished by using:
- Carbon dioxide
- Fire blanket
- Sand
- Water
Choose Answer :
(viii)The following is a set of apparatuses which are used for heating:
A.crucible, test tube, evaporating dish
B.evaporating dish, tongs, crucible
C.test tube, evaporating dish, tongs
D.tongs, crucible, test tube
Choose Answer :
(ix)Which of the following methods can be used to get oil from cotton seeds?
A.Decantation
B. Distillation
C. Grinding and distillation D. Grinding followed by squeezingChoose Answer :
(x)Which of the following apparatuses is suitable for measuring volumes of smaller quantities of liquids?
A.Beaker
B. Burette
C. Conical flask
D. Measuring cylinder
Choose Answer :
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