Question

While performing cathode ray experiments, it was
observed that there was no passage of electric
current under normal conditions. Which of the
following can account for this observation ?
(a) Dust particles are present in air
(b) Carbon dioxide is present in air
(c) Air is a poor conductor of electricity under
normal conditions
(d) None of the above

Answer 1

I think so C Ais the answer as it is written under normal conditions but the experiment is under high pressure tube

Answer 2

$\bf\large\underline\pink{Answer:-}$

c) Air js a poor conductor of electricity under normal conditions.