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

Sodium chloride is a liquid at 900°C. How are the particles arranged and how do the particles move in sodium chloride at 900°C? [Table_1]

2019 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

2.00 g of powdered calcium carbonate is added to 50.0 cm3 of hydrochloric acid.Which apparatus is used to measure the calcium carbonate and the hydroc...

2019 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

Rock salt is a mixture of sand and sodium chloride.Sodium chloride is soluble in water but not in hexane.Sand is insoluble in both water and hexane.Wh...

2019 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

The colours in four dyes are separated using chromatography. Which chromatogram shows an insoluble colour?

2019 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Which statement about an atom of fluorine, $^{19}_{9}F$, is correct?

2019 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Calcium reacts with chlorine to produce calcium chloride.What happens when a calcium ion forms during this reaction?

2019 Summer

MCQ

CH4 - ATOMS COMBINING

Which row describes the formation of single covalent bonds in methane?

2019 Summer

MCQ

CH4 - ATOMS COMBINING

Diamond and graphite have giant covalent structures of carbon atoms. Which statement describes graphite?

2019 Summer

MCQ

CH4 - ATOMS COMBINING

The compound magnesium nitrate has the formula Mg(NO$_3$)$_2$.What is the relative formula mass of magnesium nitrate?

2019 Summer

MCQ

CH1 - STATES OF MATTER

Four substances are electrolysed using inert electrodes. Which row describes the electrode products? [Table_1]

2019 Summer