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WorksheetsQUIZ 1
Total questions: 15
Worksheet time: 7mins
Which isotope is used to detect the leakage of gas pipe?
Carbon - 14
Iodine - 131
Sodium - 24
Phosphorus - 32
Which of the following elements are in Group 18 of the Periodic Table of Elements?
Helium and krypton
Hydrogen and oxygen
Oxygen and krypton
Helium, hydrogen and oxygen
Which substances is a covalent compound?
sodium chloride
magnesium oxide
carbon tetrachloride
sodium carbonate
Which of the following properties are true about transition element?
Have low melting point
Form coloured compounds.
Have more than one oxidation numbers.
Have catalytic properties
Which statements are correct about Group 17 elements?
known as halogens
Monoatomic
Bromine is a reddish-brown liquid.
Iodine is in solid state at room conditions.
The pH scale indicates the degree of acidity or alkalinity of a solution.
Which of the following pH values is for strong alkaline solution?
pH 13
pH 10
pH 6
pH 3
Which salt can be prepared by this method?
Magnesium nitrate
Copper (II) sulphate
Lead(II) iodide
Barium chloride
An element X has one
valence electron in its atom.
Which statement
is the chemical property of element X?
Reacts with water to produce an alkaline solution
Reacts with chlorine to produce black solid
Reacts with oxygen to produce water
Reacts with sodium hydroxide to produce an acidic solution
Substance Y reacted with dilute nitrate acid solution to produce a colourless gas. A ‘pop’ sound is heard when the gas is tested with a lighted wooden splinter.
What is substance Y?
Sodium carbonate
Copper
Magnesium carbonate
Magnesium
A fertiliser can be produced by reacting ammonia gas with substance X. What is X?
Water
Sodium chloride
Sulphuric acid
Calcium hydroxide
Y is a strong acid. Which statement is correct about Y?
Produces red colour when tested with universal indicator
Its pH value more than 7
Dissociates partially in water
Concentration of OH- ions is high
The pH of solution Q is too high. Which of the following substances found in your house can be used to decrease the pH of the solution ?
table salt
baking soda
vinegar
starch solution
What is the purpose of adding calcium oxide (quicklime) to acidic soil?
to prevent soil from becoming too dry
to improve the soil's ventilation
to add nutrients to the soil
to neutralise the acid in the soil
Which statement is true about neutralisation ?
only salt is formed
a soluble salt is always formed
salt and water are formed
salt and carbon dioxide are formed
The following are physical characteristics of salts crystals except
fixed size
flat surface
fixed geometrical shape
fixed angle between surfaces
