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Question 21M.1.sl.TZ1.28

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1.sl.TZ1.28
Level sl Paper 1 Time zone TZ1
Command term State Question number 28 Adapted from N/A
28.
[Maximum mark: 1]
21M.1.sl.TZ1.28

The enthalpy of combustion of a fuel was determined using the calorimeter shown. The final result was lower than the literature value.

Which factors could have contributed to this error?

I.   Not all heat from the combustion was transferred to the calorimeter.
II.  Incomplete combustion occurred.
III. The temperature probe touched the bottom of the calorimeter.

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

A

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