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

MCQ

CH7 - REDOX REACTIONS

The reactions shown may occur in the air during a thunder storm.N\textsubscript{2} + O\textsubscript{2} \rightarrow 2NO2NO + O\textsubscript{2} \right...

2009 Summer

MCQ

CH7 - REDOX REACTIONS

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

2009 Winter

MCQ

CH7 - REDOX REACTIONS

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

2009 Winter

Theory

CH7 - REDOX REACTIONS

A student half-filled a syringe with water.She then carefully drew up some blue ink into the syringe so that it formed a separate layer below the wate...

2010 Summer

MCQ

CH7 - REDOX REACTIONS

The red colour in some pottery glazes may be formed as a result of the reactions shown.$$ ext{heat}\begin{align} \text{CuCO}_3 & \rightarrow \text{CuO...

2010 Winter

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

MCQ

CH7 - REDOX REACTIONS

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

2010 Winter

MCQ

CH7 - REDOX REACTIONS

The element vanadium, V, forms several oxides. In which change is oxidation taking place?

2012 Summer

MCQ

CH7 - REDOX REACTIONS

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

2012 Summer

MCQ

CH1 - STATES OF MATTER

The diagram shows how the molecules in the exhaust gases diffuse into the air. Which statement describes what happens to these molecules next?

2009 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

A student takes 2 g samples of calcium carbonate and adds them to 20 cm^3 samples of dilute hydrochloric acid at different temperatures. She measures ...

2009 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

The diagram shows the paper chromatograms of four substances, W, X, Y and Z.Which two substances are pure?

2009 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

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

2009 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Which numbers are added together to give the nucleon number of an ion?

2009 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

The electronic configuration of an ion is 2.8.8. What could this ion be?[Table showing options for $S^{2-}$ and $Ca^{2+}$]

2009 Summer

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?

2009 Summer

MCQ

CH4 - ATOMS COMBINING

Element V forms an acidic, covalent oxide. Which row in the table shows how many electrons there could be in the outer shell of an atom of V? [Table_1...

2009 Summer

MCQ

CH4 - ATOMS COMBINING

When sodium chloride is formed from its elements, each chlorine atom ...... 1 ...... one ...... 2 .......Which words correctly complete gaps 1 and 2?

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Nitrogen and hydrogen react together to form ammonia.$N_2 + 3H_2 \rightarrow 2NH_3$When completely converted, 7 tonnes of nitrogen gives 8.5 tonnes of...

2009 Summer