MCQ

CH16 - HALOGEN DERIVATIVES

The following diagram represents the structure of a possible polymer.By which method might this polymer be made?

2009 Winter

MCQ

CH16 - HALOGEN DERIVATIVES

Which statements about the reaction of solid sodium bromide with concentrated sulfuric acid are correct?1. Hydrogen bromide is a product of the reacti...

2009 Winter

MCQ

CH16 - HALOGEN DERIVATIVES

Which statements are true for an $S_N2$ reaction? 1. One bond is broken as another bond is formed. 2. The formation of a transition state involves t...

2009 Winter

Theory

CH16 - HALOGEN DERIVATIVES

One method of making 1-bromobutane in the laboratory is described below.[Table_1](a) The overall reaction may be considered to take place in two stage...

2009 Winter

MCQ

CH16 - HALOGEN DERIVATIVES

In many countries plastic waste is collected separately and sorted. Some of this is incinerated to provide heat for power stations.Why is PVC, polyvin...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

When an isomer Y of molecular formula C₄H₉Br undergoes hydrolysis in aqueous alkali to form an alcohol C₄H₉OH, the rate of reaction is found t...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

Which reactions are examples of nucleophilic substitution?1. $\text{CH}_3\text{CH}_2\text{Br} + \text{OH}^- \rightarrow \text{CH}_3\text{CH}_2\text{OH...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

When an isomer Y of molecular formula C_4H_9Br undergoes hydrolysis in aqueous alkali to form an alcohol C_4H_9OH, the rate of reaction is found to be...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

Which reactions are examples of nucleophilic substitution? 1. $\text{CH}_3\text{CH}_2\text{Br} + \text{OH}^- \rightarrow \text{CH}_3\text{CH}_2\text{...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

Which compound undergoes an $S_N1$ substitution reaction?

2010 Winter

MCQ

CH3 - CHEMICAL BONDING

Which molecule contains six bonding electrons?

2017 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

The mass spectrum of a sample of lithium shows that it contains two isotopes, $^6\text{Li}$ and $^7\text{Li}$.The isotopic abundances are shown in the...

2017 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A sports medal has a total surface area of 150 cm$^2$. It was evenly coated with silver by electrolysis. Its mass increased by 0.216 g.How many atoms ...

2017 Summer

MCQ

CH2 - ATOMIC STRUCTURE

Which property of an atom does not affect its first ionisation energy?

2017 Summer

MCQ

CH3 - CHEMICAL BONDING

Which molecule has the largest overall dipole?

2017 Summer

MCQ

CH4 - STATES OF MATTER

The complete combustion of 2 moles of a straight chain alkane produces 400 dm^3 of carbon dioxide measured at 301 K and 1 \times 10^5 Pa. Carbon dioxi...

2017 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

Which expression gives the standard enthalpy change of combustion of methane?

2017 Summer

MCQ

CH6 - ELECTROCHEMISTRY

Solutions containing chlorate(I) ions are used as household bleaches and disinfectants. These solutions decompose on heating as shown. $$3ClO^- \righ...

2017 Summer

MCQ

CH6 - ELECTROCHEMISTRY

When $K_2MnO_4$ is dissolved in water, the following reaction occurs:$aMnO_4^{2-}(aq) + bH_2O(l) \rightarrow cMnO_4^{-}(aq) + dMnO_2(s) + eOH^{-}(aq)$...

2017 Summer

MCQ

CH7 - EQUILIBRIA

Methanol can be produced from hydrogen and carbon monoxide.$2H_2(g) + CO(g) \rightleftharpoons CH_3OH(g)$What is the expression for $K_p$ for this rea...

2017 Summer