Multiple choice

Which of the following statements is/are false?

a. Ammonia gas can be liquified by applying high pressure and lowering the temperature. b. Plasma is a mixture of free protons and ions. c. The changing of vapour directly into solid is called sublimation.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option as this statement is false. Plasma is a mixture of free electrons and ions.

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