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

The diagram shows a cup of tea. Which row describes the water particles in the air above the cup compared with the water particles in the cup? [Tabl...

2013 Summer

1

MCQ

CH11 - ACIDS AND BASES

Crystals of sodium chloride were prepared by the following method.1. 25.0 cm3 of dilute hydrochloric acid was accurately measured into a conical flask...

2013 Summer

2

MCQ

CH11 - ACIDS AND BASES

Lead iodide is insoluble in water. Lead iodide is made by adding aqueous lead nitrate to aqueous potassium iodide. Which pieces of apparatus are neede...

2013 Summer

3

MCQ

CH3 - ATOMS AND ELEMENTS

Element X is represented by $^{27}_{13}\text{X}$.Which statement about element X is correct?

2013 Summer

2

MCQ

CH12 - THE PERIODIC TABLE

The positions of four elements are shown on the outline of the Periodic Table.Which element forms a coloured oxide?

2013 Summer

2

MCQ

CH4 - ATOMS COMBINING

For which substance is the type of bonding not correct? [Table_1]

2013 Summer

1

MCQ

CH4 - ATOMS COMBINING

Element X has six electrons in its outer shell. How could the element react?

2013 Summer

3

MCQ

CH1 - STATES OF MATTER

The diagram shows an incomplete circuit. Which substance causes the lamp to light when added to the glass tube?

2013 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A compound with the formula $XF_2$ has a relative formula mass of 78. What is element X?

2013 Summer

1

MCQ

CH13 - THE BEHAVIOR OF METALS

What is the balanced chemical equation for the reaction between calcium and water?

2013 Summer

2