MCQ

CH7 - REDOX REACTIONS

In which reaction is lead(II) oxide, PbO, oxidised?

2012 Summer

2

MCQ

CH7 - REDOX REACTIONS

In which equation is the underlined substance acting as a reducing agent?

2013 Summer

2

MCQ

CH7 - REDOX REACTIONS

Which equation shows an oxidation reaction?

2014 Summer

2

MCQ

CH7 - REDOX REACTIONS

The reactions shown may occur in the air during a thunderstorm.$\text{N}_2 + \text{O}_2 \rightarrow 2\text{NO}$$2\text{NO} + \text{O}_2 \rightarrow 2\...

2009 Summer

1

MCQ

CH7 - REDOX REACTIONS

Which change is an oxidation?

2012 Winter

2

MCQ

CH7 - REDOX REACTIONS

The equations represent redox reactions. In which equation is the underlined substance acting as a reducing agent?

2009 Winter

2

MCQ

CH7 - REDOX REACTIONS

The equations for two reactions P and Q are given.P   \( 2\text{NaNO}_2 + \text{O}_2 \rightarrow 2\text{NaNO}_3 \)Q   \( 2\text{HgO} \righta...

2014 Winter

1

MCQ

CH7 - REDOX REACTIONS

The reactions shown may occur in the air during a thunder storm. $$N_2 + O_2 \rightarrow 2NO$$ $$2NO + O_2 \rightarrow 2NO_2$$ $$NO + O_3 \rightarr...

2013 Winter

3

MCQ

CH7 - REDOX REACTIONS

The red colour in some pottery glazes may be formed as a result of the reactions shown.$\text{heat}$CuCO$_3$ $\rightarrow$ CuO + CO$_2$CuO + SnO $\rig...

2010 Winter

2

MCQ

CH7 - REDOX REACTIONS

Which equation shows an oxidation reaction?

2014 Summer

1

MCQ

CH1 - STATES OF MATTER

Which diagram shows the process of diffusion?

2012 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Which method is most suitable to obtain zinc carbonate from a suspension of zinc carbonate in water?

2012 Summer

2

MCQ

CH10 - THE SPEED OF A REACTION

A student investigates how the concentration of an acid affects the speed of reaction with a 0.5 g mass of magnesium at 30°C. The student has a beake...

2012 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

An element Y has the proton number 18.The next element in the Periodic Table is an element Z.Which statement is correct?

2012 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

Which atom has twice as many neutrons as protons?

2012 Summer

1

MCQ

CH4 - ATOMS COMBINING

Which is a simple covalent molecule? [Table_1]

2012 Summer

2

MCQ

CH4 - ATOMS COMBINING

The electronic structures of atoms P and Q are shown.P and Q react to form an ionic compound. What is the formula of this compound?

2012 Summer

2

MCQ

CH4 - ATOMS COMBINING

The diagrams show the structures of two forms, P and Q, of a solid element. What are suitable uses of P and Q, based on their structures?

2012 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation for the reaction between magnesium and dilute sulfuric acid is shown.$$\text{Mg} + \text{H}_2\text{SO}_4 \rightarrow \text{MgSO}_4 + \tex...

2012 Summer

2

MCQ

CH1 - STATES OF MATTER

Winston Churchill, a British Prime Minister, had his false teeth electroplated with gold.The teeth were coated with a thin layer of carbon and were th...

2012 Summer

2