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

The diagram shows some changes of state.Which words describe the changes of state, P, Q, R and S?

2017 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

The diagram shows part of a thermometer. What is the reading on the thermometer?

2017 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

Pure water has a boiling point of 100 °C and a freezing point of 0 °C.What is the boiling point and freezing point of a sample of aqueous sodium chl...

2017 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

Pure copper(II) sulfate crystals can be made by adding copper(II) oxide to hot dilute sulfuric acid. The copper(II) oxide is added until it ......1......

2017 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Which part of an atom has a relative mass of 1 and a relative charge of 0?

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Which molecule contains exactly two single covalent bonds?

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Sodium reacts with chlorine to form sodium chloride. Which statements describe what happens to the sodium atoms in this reaction? 1. Sodium atoms fo...

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Diamond is extremely hard and does not conduct electricity. Which statement explains these properties?

2017 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

What is the relative formula mass of ammonium nitrate, NH$_4$NO$_3$?

2017 Summer

MCQ

CH1 - STATES OF MATTER

Concentrated aqueous sodium chloride is electrolysed. What is the main product formed at the positive electrode (anode)?

2017 Summer