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Sec 4 Normal Science Chem TYS MCQ 2015 Set B
Quiz by HAO YI
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Which substance is a solid at 20 oC?
A
B
C
D
A mixture of coloured dyes is compared with other dyes using chromatography.
The chromatogram is shown below.
Which dyes are present in the mixture?
2 only
2 and 3
2 and 4
1 and 3
Which substance is a solid at 20 oC?
A mixture of coloured dyes is compared with other dyes using chromatography.
The chromatogram is shown below.
Which dyes are present in the mixture?
The nucleus of an atom has neutrons and protons.
Electrons are in different shells around the nucleus.
Which statement is correct?
A white powder, X, is formed when zinc is completely burned in air.
Which terms describe X, zinc and air?
Which statement about ionic compounds is correct?
The diagram shows a molecule.
What is the molecular formula of this molecule?
An oxide of element X dissolves in water to form a solution of pH 5.
Which row is correct for element X?
Soil in a garden has a pH of 6.5.
The pH of the soil is changed by adding calcium hydroxide.
Which plant needs calcium hydroxide to be added to the soil for the plant to grow well?
How are the elements arranged in the Periodic Table?
What determines the group of an element in the Periodic Table?
What is a property of all metals?
The experiment shown in the diagram is set up.
The apparatus is left for one month.
In which tube does the water level rise the most?
Which diagram represents the structure of an alloy?
What is the volume of oxygen in 50 cm3 of air?
Which statements about pollutants are correct?
1 Carbon monoxide is responsible for the production of 'acid rain'.
2 Oxides of nitrogen are present in car exhausts.
3 Sulfur dioxide can be produced by the combustion of fossil fuels.
Which fuel is a mixture of hydrocarbons?
Which row describes a polyunsaturated molecule?
The diagram shows an apparatus used to test a gas.
The bromine solution becomes colourless.
What is the structure of the gas?
