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

In which changes do the particles move further apart? $$\text{W} \rightleftharpoons \text{Y} \text{ (gas)}$$ $$\text{X} \rightleftharpoons \text{Z} ...

2016 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

A sample of a dye is investigated by chromatography. A line is drawn across a piece of chromatography paper and a spot of the dye is placed on it.The ...

2016 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

One of the instructions for an experiment reads as follows. Quickly add 50 $\text{cm}^3$ of acid. What is the best piece of apparatus to use?

2016 Summer

3

MCQ

CH4 - ATOMS COMBINING

Diamond and graphite are macromolecules.Which statement about diamond and graphite is not correct?

2016 Summer

2

MCQ

CH4 - ATOMS COMBINING

The table shows the electronic structure of four atoms.[Table_1]Which two atoms combine to form a covalent compound?

2016 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

An aluminium atom has a nucleon number of 27 and a proton number of 13.How many neutrons does this aluminium atom contain?

2016 Summer

2

MCQ

CH4 - ATOMS COMBINING

What happens when a bond is formed between a green gaseous element and a soft metallic element?

2016 Summer

2

MCQ

CH6 - USING MOLES

The equation shows the reaction between magnesium and sulfuric acid. [A_r: H, 1; O, 16; Mg, 24; S, 32] $$ \text{Mg} + \text{H}_2\text{SO}_4 \rightarr...

2016 Summer

2

MCQ

CH1 - STATES OF MATTER

The diagram shows an electrical cable.Which statement about the substances used is correct?

2016 Summer

2

MCQ

CH1 - STATES OF MATTER

When substance X is electrolysed, the amount of gases P and Q formed is shown. What is substance X?

2016 Summer

1