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 changes that occur when a substance changes state are shown below.Which process, W, X, Y or Z, is occurring in the following four situations?1. Bu...

2015 Summer

1

Theory

CH1 - STATES OF MATTER

A student uses the apparatus shown in the diagram below to measure the volume of carbon dioxide gas made when different masses of marble chips are add...

2015 Summer

2

Theory

CH3 - ATOMS AND ELEMENTS

Atoms contain electrons, neutrons and protons. What is the definition of nucleon number? A the number of neutrons in the nucleus of an atom B the numb...

2015 Summer

2

Theory

CH3 - ATOMS AND ELEMENTS

The diagram shows the atomic structure of an element X. What is X?A. aluminiumB. berylliumC. boronD. fluorine

2015 Summer

2

Theory

CH3 - ATOMS AND ELEMENTS

Which statements comparing the properties of electrons, neutrons and protons are correct?[Table_1]Table:| | neutrons and protons are both heavier th...

2015 Summer

2

Theory

CH4 - ATOMS COMBINING

Rescuers are drilling through fallen rock in order to rescue some men trapped in a cave. The drill needs lubricating from time to time.The following s...

2015 Summer

1

Theory

CH4 - ATOMS COMBINING

In which compounds are pairs of electrons shared between atoms?1. methane2. lead bromide3. sodium chlorideA. 1 onlyB. 2 onlyC. 1 and 3D. 1, 2 and 3

2015 Summer

2

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

What is the relative formula mass, $M_r$, of $CaCO_3$?A. 50B. 68C. 100D. 204

2015 Summer

2

Theory

CH1 - STATES OF MATTER

Copper and hydrogen can each be formed by electrolysis. At which electrodes are these elements formed? [Table_1]

2015 Summer

2

Theory

CH1 - STATES OF MATTER

The diagram shows a failed attempt to copper-plate a pan.Which action will plate the pan with copper?A. cooling the copper sulfate solution in an ice ...

2015 Summer

2