Daily Practice

GCSE Science

30th May 1970

5 questions · GCSE · 584 questions in this band

1
Moles, Formulae and Equations
In the equation 2H2 + O2 gives 2H2O, how many moles of water are formed from 3 mol of hydrogen?
2
Concentration, Yield and Atom Economy
Calculate the concentration in moles per cubic decimetre of a solution containing 0.5 mol in 250 cubic centimetres.
3
Chemical Changes
State the pH value of a neutral solution.
4
Reactivity, Acids and Salts
Name the salt made from zinc oxide and nitric acid.
5
Electrolysis
In the industrial extraction of aluminium, explain why the aluminium oxide is dissolved in molten cryolite rather than melted on its own.

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Any date always gives the same five questions, so a sheet can be set again or shared. All of May 1970, including the monthly compilation PDF.