GCE O-Level · Chemistry (6092)

Experimental Design: Practice Questions

5 multiple-choice questions marked as you go, and 2 written questions with worked solutions. All on Experimental Design.

7 questions9 marksFree, no account

Question 1

1 mark

Which piece of laboratory apparatus is most appropriate for measuring exactly \(25.0 \text{ cm}^3\) of aqueous sodium hydroxide during a titration experiment?

Question 2

1 mark

A student needs to measure the volume of a gas evolved in a chemical reaction over a period of 5 minutes. Which combination of apparatus is the most suitable for measuring the rate of this reaction?

Question 3

1 mark

To identify the components of a colourless liquid mixture using paper chromatography, a locating agent is required. What is the primary reason for using a locating agent in this context?

Question 4

1 mark

Which apparatus is specifically designed to measure variable volumes of gas evolved during a chemical reaction?

Question 5

1 mark

A sample of gas is known to be acidic and needs to be dried before collection by downward delivery. Which drying agent is suitable for this purpose, and which gas could it be?

Question 6

2 marks

A student needs to dry a sample of hydrogen gas before collection. Which of the following substances listed in the syllabus can be used as a drying agent?

Write your answer out first, then check it against the worked solution.

Question 7

2 marks

Name the most appropriate piece of laboratory apparatus used to measure precisely \(25.0 \text{ cm}^3\) of hydrochloric acid during a titration.

Write your answer out first, then check it against the worked solution.

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