Q Which of the following are examples of P, Q and R? A B C D
P Air Water Sugar Tin
Q Aluminium Iron Copper Petroleum
R Sulphur Carbon Zinc Zinc PMR 2004
2
The diagram shows a liquid fertiliser used by a farmer for his crops. After using it, his crops become stunted.
Which element is not found in the liquid fertiliser? A B C D
Nitrogen Phosphorus Sulphur Chlorine PMR 2004
3
Which of the following represents an element? A
B
C
D
PMR 2004 4
The steps below are used to separate a mixture of three substances, sand, iron powder and common salt crystals.
P - Dissolving in water Q - Using a magnet R - Evaporating S - Filtrating Which of the following is the correct sequence of steps to separate the three substances? A B C D
P→ Q→ S→ P→
Q P Q R
→R→S →S→R →P→R →S→Q PMR 2005
5
The following list contains the names of some metals and non-metals.
Sulphur
Carbon
Mercury
Copper
Which of the following classifications is correct? A
Metal Carbon Copper
Non-metal Sulphur mercury
B
Metal Mercury Copper
Non-metal Sulphur Carbon
C
Metal Sulphur Mercury
Non-metal Carbon Copper
D
Metal Sulphur Carbon
Non-metal Mercury Copper PMR 2006
6
Which of the following is true about copper, mercury and gold at room temperature? A B C D
Ductile Malleable In solid state Allow electric current to flow through PMR 2006
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