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Question 1
When using a light microscope, which adjustment should you make first to bring a specimen roughly into focus under low power?
Correct Answer:
Use the coarse focus knob with the lowest-power objective
Question 2
A student measures mass on a balance that reads to 0.01 g. Which statement best describes the precision of a single reading of 12.40 g?
Correct Answer:
The reading is reported to the nearest 0.01 g, so precision is limited by the instrument resolution
Question 3
Why is a control sample or control experiment included when testing the effect of enzyme concentration on reaction rate?
Correct Answer:
To provide a baseline showing results when the independent variable is zero or inactive
Question 4
In a titration, a student rinses the burette with distilled water only, then fills it with 0.100 mol dm⁻³ NaOH. What is the most likely effect on the titre volume of NaOH needed to neutralise a fixed acid sample?
Correct Answer:
Titre increases because residual water dilutes the NaOH in the burette
Question 5
A solution of concentration 0.250 mol dm⁻³ has volume 25.0 cm³. How many moles of solute are present?
Correct Answer:
0.00625 mol
Question 1
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About this Exam

Prepare with the CCEA GCE Life & Health Sciences Practice Questions - CCEA GCE Life and Health Sciences (Northern Ireland) Exam practice quiz. This question bank includes 100 questions covering rate, reaction, blood, mainly, and equilibrium. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CCEA GCE Life & Health Sciences Practice Questions - CCEA GCE Life and Health Sciences (Northern Ireland) Exam

This practice set contains 100 questions from the matching question bank and focuses on rate, reaction, blood, mainly, and equilibrium. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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