MCQ

CH14 - MAKING USE OF METALS

Which process is involved in the extraction of zinc from zinc blende?

2017 Summer

1

MCQ

CH14 - MAKING USE OF METALS

Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel.What is not made from st...

2017 Summer

4

MCQ

CH14 - MAKING USE OF METALS

Iron from a blast furnace is treated with oxygen and with calcium oxide to make steel.Which substances in the iron are removed?[Table_1]

2016 Summer

3

MCQ

CH14 - MAKING USE OF METALS

Why is cryolite used during the extraction of aluminium by electrolysis?

2016 Summer

4

MCQ

CH14 - MAKING USE OF METALS

Why is argon gas used to fill electric lamps?

2017 Winter

1

MCQ

CH14 - MAKING USE OF METALS

Impurities in iron obtained from the blast furnace include carbon, phosphorus, and silicon. Which impurities are removed from the molten iron as gase...

2016 Winter

1

MCQ

CH14 - MAKING USE OF METALS

Which statement about the industrial extraction of aluminium from aluminium oxide is correct?

2016 Winter

2

MCQ

CH14 - MAKING USE OF METALS

The alloy brass is a mixture of copper and another metal. Brass is used to make the pins of electrical plugs. Copper is used to make electrical wiring...

2016 Winter

2

MCQ

CH14 - MAKING USE OF METALS

Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel. What is not made from s...

2017 Summer

3

MCQ

CH14 - MAKING USE OF METALS

Aluminium is extracted by electrolysis of a mixture of aluminium oxide and cryolite. Which statement is not correct?

2016 Summer

2

Theory

CH1 - STATES OF MATTER

The diagrams show the arrangement of particles in three different physical states of substance X.Which statement about the physical states of substanc...

2011 Summer

3

Theory

CH2 - SEPARATING SUBSTANCES

An aqueous solution is coloured. Which method of separation would show that the solution contains ions of different colours? A chromatography B crysta...

2011 Summer

1

Theory

CH2 - SEPARATING SUBSTANCES

The table gives the solubility of four substances in ethanol and in water.A mixture containing all four substances is added to ethanol, stirred and fi...

2011 Summer

1

Theory

CH4 - ATOMS COMBINING

Which two elements react together to form an ionic compound? [Table_1] A. W and X B. X and Y C. Y and Z D. Z and W

2011 Summer

1

Theory

CH3 - ATOMS AND ELEMENTS

The diagram shows part of the Periodic Table.Which element is correctly matched with its electronic structure?[Table_1: electronic structure]A: 2,8,1B...

2011 Summer

1

Theory

CH4 - ATOMS COMBINING

In the diagrams, circles of different sizes represent atoms of different elements.Which diagram represents hydrogen chloride gas?Options: A, B, C, D

2011 Summer

2

Theory

CH4 - ATOMS COMBINING

The nucleon number and proton number of the lithium atom are shown by the symbol $^7_3\text{Li}$.What is the correct symbol for the lithium ion in lit...

2011 Summer

1

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

What is the relative molecular mass ($M_r$) of HNO$_3$? A 5 B 31 C 32 D 63

2011 Summer

2

Theory

CH14 - MAKING USE OF METALS

Electricity from a power station passes through overhead cables to a substation and then to a school where it is used to electrolyse concentrated hydr...

2011 Summer

2

Theory

CH1 - STATES OF MATTER

Which statement about the electrolysis of molten lead(II) bromide is correct? A A colourless gas is seen at the cathode. B A grey metal is seen at...

2011 Summer

2