MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Three processes are listed. burning methane in air radioactive decay of $^{235}U$ reacting hydrogen with oxygen. Which statements about these proc...

2011 Summer

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Solutions of two chemicals are mixed.A reaction occurs and the temperature change is measured.Which statement is correct?

2014 Summer

3

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Statement 1 Hydrogen is used as a fuel.Statement 2 When hydrogen burns in the air to form water, heat energy is produced. Which is correct?

2013 Summer

1

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The equation for the effect of heat on hydrated sodium carbonate is as shown.$$\text{Na}_2\text{CO}_3 \cdot 10\text{H}_2\text{O}(s) \rightleftharpoons...

2011 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Power stations produce electrical energy from different fuels. Which fuel causes least pollution to the atmosphere?

2014 Summer

2

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Which substance does not require oxygen in order to produce energy?

2013 Summer

1

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The diagram shows the reaction between zinc oxide and dilute hydrochloric acid.Which terms describe the reaction?

2012 Summer

1

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

The diagram shows some properties that substances may have.To which labelled part of the diagram does $^{235}\text{U}$ belong?

2009 Summer

1

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Butane, ethanol and hydrogen are fuels.Which substances produce both carbon dioxide and water when used as a fuel?[Table_1]

2011 Summer

1

MCQ

CH9 - ENERGY CHANGES AND REVERSIBLE REACTIONS

Which diagram shows a process in which an endothermic change is taking place?

2009 Summer

1

MCQ

CH1 - STATES OF MATTER

The diagram shows the result of dropping a purple crystal into water. Which processes take place in this experiment?

2014 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

The four pieces of apparatus shown below are used in chemical experiments. Which statement about the apparatus is correct?

2014 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Alcohol and water are completely miscible. This means when mixed together they form only one liquid layer. Which method is used to separate alcohol fr...

2014 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

The diagram shows the structure of an atom of element X. What is X?

2014 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

The diagrams show four particles.Which two diagrams show atoms that are isotopes of each other?

2014 Summer

1

MCQ

CH4 - ATOMS COMBINING

The 'lead' in a pencil is made of a mixture of graphite and clay. When the percentage of graphite is increased, the pencil slides across the paper mo...

2014 Summer

2

MCQ

CH4 - ATOMS COMBINING

Element X is in Group I of the Periodic Table. X reacts with element Y to form an ionic compound.Which equation shows the process that takes place whe...

2014 Summer

1

MCQ

CH4 - ATOMS COMBINING

Solid F is an element. Solid G is a compound. Neither solid conducts electricity but G conducts electricity when dissolved in water. These properties ...

2014 Summer

1

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A compound contains one atom of calcium, two atoms of hydrogen and two atoms of oxygen. What is the correct chemical formula of the compound?

2014 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

In athletics, banned drugs such as nandrolone have been taken illegally to improve performance. Nandrolone has the molecular formula $C_{18}H_{26}O_2$...

2014 Summer

1