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Question 19M.1A.SL.TZ1.12

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1A.SL.TZ1.12
Level SL Paper 1A Time zone TZ1
Command term Question number 12 Adapted from N/A
12.
[Maximum mark: 1]
19M.1A.SL.TZ1.12

Boiling water is heated in a 2 kW electric kettle. The initial mass of water is 0.4 kg. Assume the specific latent heat of vaporization of water is 2 MJ kg–1.

What is the time taken for all the water to vaporize?

A. 250 s

B. 400 s

C. 2500 s

D. 4000 s

[1]

Markscheme

B

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