Daily Practice · 13+ Common Entrance

Daily Practice - 13+ Common Entrance

13th October 1993

5 questions · Years 7-8 · 744 questions in this band

1
Science: Full Practice Paper 8
Name the enzyme found in saliva that begins the digestion of starch in the mouth.
2
Science: Full Practice Paper 9
A pupil adds universal indicator to a solution and it turns red. State whether the solution is acidic, alkaline or neutral.
3
Working Scientifically
A thermometer has graduations every 1 degree C. A student takes a single temperature reading of 40 degrees C. Calculate the percentage uncertainty in this reading.
4
Science: Working Scientifically and Practical Skills Set 2
A pupil wants to find out whether increasing the concentration of a salt solution affects the boiling point of water. Suggest one variable, other than salt concentration, that should be kept the same for this to be a fair test.
5
Science: Working Scientifically and Practical Skills Set 3
On a graph of temperature (y-axis) against time (x-axis), a straight line rises from (0 s, 20 degrees C) to (40 s, 60 degrees C). Calculate the gradient of this line, and state what it represents.

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