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

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Which relative molecular mass, $M_r$, is \textbf{not} correct for the molecule given?[Table_1]

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Nitrogen and hydrogen react together to form ammonia.$$\text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3$$When completely converted, 7 tonnes of nitro...

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Which relative molecular mass, $M_r$, is not correct for the molecule given? [Table_1]

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

For each atom of carbon present in a molecule, there is an equal number of atoms of oxygen but twice as many atoms of hydrogen. What is the formula of...

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Water is formed when 48 g of oxygen combine with 6 g of hydrogen.What mass of oxygen combines with 2 g of hydrogen?

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

For each atom of carbon present in a molecule, there is an equal number of atoms of oxygen but twice as many atoms of hydrogen. What is the formula o...

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Water is formed when 48 g of oxygen combine with 6 g of hydrogen.What mass of oxygen combines with 2 g of hydrogen?

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Hydrogen and chlorine react as shown.1 molecule of hydrogen + 1 molecule of chlorine \rightarrow 2 moles of hydrogen chloride.What is the equation for...

2010 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Hydrogen and chlorine react as shown. 1 molecule of hydrogen + 1 molecule of chlorine → 2 molecules of hydrogen chloride What is the equation for ...

2010 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