Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

Which element is not added to a fertiliser?A. aluminiumB. nitrogenC. phosphorusD. potassium

2009 Summer

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

Which element is not added to a fertiliser? A aluminium B nitrogen C phosphorus D potassium

2009 Summer

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

Ammonia is manufactured by the Haber process. $$\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)$$ the forward reaction is exothermi...

2009 Summer

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

Fertilisers are used to provide three of the elements needed for plant growth. Which two compounds would give a fertiliser containing all three of the...

2009 Winter

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

Fertilisers are used to provide three of the elements needed for plant growth. Which two compounds would give a fertiliser containing all three of the...

2009 Winter

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

(a) Sulfuric acid is made by the Contact process.$$2SO_2 + O_2 \rightleftharpoons 2SO_3$$This is carried out in the presence of a catalyst at 450°C a...

2009 Winter

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

(a) Sulfuric acid is made by the Contact process.$$2SO_2 + O_2 \rightleftharpoons 2SO_3$$This is carried out in the presence of a catalyst at 450°C a...

2009 Winter

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

To grow roses, a fertiliser containing nitrogen, phosphorus and potassium is needed.For the best flowers, the fertiliser should contain a high proport...

2010 Summer

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

To grow roses, a fertiliser containing nitrogen, phosphorus and potassium is needed. For the best flowers, the fertiliser should contain a high propor...

2010 Summer

Theory

CH16 - SOME NON-METALS AND THEIR COMPOUNDS

To grow roses, a fertiliser containing nitrogen, phosphorus and potassium is needed.For the best flowers, the fertiliser should contain a high proport...

2010 Summer

MCQ

CH11 - ACIDS AND BASES

A student investigated the diffusion of ammonia gas, NH$_3$, and hydrogen chloride gas, HCl.Two sets of apparatus were set up as shown at room tempera...

2018 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

Chromatography is a technique used to separate coloured dyes.Which dye has an $R_f$ value of 0.7?

2018 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

Which piece of apparatus is used to measure exactly 26.3 cm³ of a liquid?

2018 Summer

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...

2018 Summer

MCQ

CH3 - ATOMS AND ELEMENTS

Chlorine exists as two common isotopes, $^{35}Cl$ and $^{37}Cl$.Information about these two isotopes is shown.[Table_1]Which statement explains why th...

2018 Summer

MCQ

CH4 - ATOMS COMBINING

Which substance is not a macromolecule?

2018 Summer

MCQ

CH12 - THE PERIODIC TABLE

Copper is a metallic element. Which statements about copper are correct? 1. Copper is malleable because layers of ions are in fixed positions and ca...

2018 Summer

MCQ

CH6 - USING MOLES

The equation for the combustion of ethane is shown.$2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O$Which volume of carbon dioxide, at room temperature and p...

2018 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A solution of ethanoic acid, CH$_3$COOH, has a concentration of 2 mol/dm$^3$.Which statement about this solution is correct?

2018 Summer

MCQ

CH7 - REDOX REACTIONS

Aqueous copper(II) sulfate is electrolysed using copper electrodes. Which statement is correct?

2018 Summer