Theory

CH17 - ORGANIC CHEMISTRY

A compound has the formula CH₃CH₂CH=CH₂. Which row in the table shows the type of compound and the colour change when aqueous bromine is added?...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The diagram shows an industrial process. Substance M is one of the substances produced by this process and is used as aircraft fuel. What is this pr...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The structures of three compounds are shown.Why do these substances all belong to the same homologous series?A They all contain an even number of carb...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

Which bond is not in a molecule of ethanoic acid?A) C–OB) C=OC) C=CD) O–H

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

A compound has the formula CH3CH2CH=CH2.Which row in the table shows the type of compound and the colour change when aqueous bromine is added?[Table_1...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The structures of three compounds are shown.Why do these substances all belong to the same homologous series?A They all contain an even number of carb...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

Which bond is not in a molecule of ethanoic acid?A. C–OB. C=OC. C=CD. O–H

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The diagram shows an industrial process. Substance M is one of the substances produced by this process and is used as aircraft fuel. What is this pr...

2009 Summer

Theory

CH17 - ORGANIC CHEMISTRY

The apparatus shows an experiment used to test gas X.The bromine solution quickly becomes colourless.What is the structure of gas X?A H−C−HB H |...

2009 Winter

Theory

CH17 - ORGANIC CHEMISTRY

Which statement about petroleum is not correct?A. It can be separated into useful substances by fractional distillation.B. It consists mainly of hydro...

2009 Winter

MCQ

CH1 - STATES OF MATTER

Small crystals of purple $\text{KMnO}_4$ $(M_r = 158)$ and orange $\text{K}_2\text{Cr}_2\text{O}_7$ $(M_r = 294)$ were placed at the centres of separa...

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 c...

2017 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

A chromatogram obtained from the chromatography of four substances is shown. Which substance has an $R_f$ value of 0.6?

2017 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

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

2017 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

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

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Which statement about metals is not correct?

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Aluminium reacts with fluorine.$xAl(s) + yF_2(g) \rightarrow zAlF_3(s)$Which values of $x$, $y$ and $z$ balance the equation?[Table_1]

2017 Summer

MCQ

CH4 - ATOMS COMBINING

Carbon monoxide burns in oxygen to produce carbon dioxide. $$2\text{CO}(g) + \text{O}_2(g) \rightarrow 2\text{CO}_2(g)$$ Which mass of carbon dioxide...

2017 Summer

MCQ

CH1 - STATES OF MATTER

Which statement about electrolysis is correct?

2017 Summer

MCQ

CH1 - STATES OF MATTER

The reactivity series for a number of different metals is shown.[Image_1: Reactivity series and diagram]The diagram shows different metal strips dippe...

2017 Summer