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Sec 4 Normal Science Chem TYS MCQ 2023 Set B
Quiz by HAO YI
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A student prepares and measures the volume of carbon dioxide gas produced when 0.5 g of magnesium carbonate reacts with 25.0 cm3 of dilute hydrochloric acid.
Which apparatus is used to obtain the most accurate result?
A
B
C
D
Petroleum is a mixture of hydrocarbons with different boiling points.
The different hydrocarbons are separated into useful fractions using a fractionating column.
Where in the fractionating column are the hydrocarbons with one to four carbon atoms collected?
A
B
C
D
A student prepares and measures the volume of carbon dioxide gas produced when 0.5 g of magnesium carbonate reacts with 25.0 cm3 of dilute hydrochloric acid.
Which apparatus is used to obtain the most accurate result?
Petroleum is a mixture of hydrocarbons with different boiling points.
The different hydrocarbons are separated into useful fractions using a fractionating column.
Where in the fractionating column are the hydrocarbons with one to four carbon atoms collected?
The electronic structure of element X is 2,8,3.
The electronic structure of element Y is 2,8,6.
What is the formula of a compound of X and Y?
Which particle contains the most electrons?
Which statement describes how a covalent bond is formed between two atoms?
Which row gives the correct formulae of calcium carbonate and calcium hydroxide?
The chemical equations for four different reactions are shown.
Which equation represents a precipitation reaction?
Which compound is added to soil to treat excess acidity?
When aqueous X is added to aqueous ammonium sulfate, an alkaline gas is produced.
Which row describes X and the pH of aqueous X?
Elements in Groups 1 and 17 of the Periodic Table will react together.
Which reaction is the most vigorous?
Period 2 of the Periodic Table contains the elements lithium to neon. Four statements describing trends are listed.
1 The elements have increasing proton (atomic) numbers.
2 The elements have increasing metallic character.
3 The elements have increasing melting points.
4 The elements have an increasing number of valence electrons.
Which statements are correct for the trend from left to right across Period 2?
Which row shows a substance that is a metallic element?
Metal M is placed between calcium and sodium in the reactivity series.
Which row describes the reactions of M and its oxide?
Which compound is an alkene?
Propene, C3H6, is formed as one of the products when dodecane, C12H26, is heated as shown.
Which type of change occurs in this reaction?
Which statement describes the composition of gases in air?
80 cm3 of dry air is heated with a metal until all of gas G has reacted.
The volume of air decreases to 63 cm3.
What is G?
Which row identifies pollutant gases produced by the combustion of fossil fuels?
