Question

28. Which of the following precautions are to be taken for a successful run of the experiment to show that carbon dioxide is given out during respiration?
A) Cork should be air tight.
B) Seeds in the flask should be totally dry.
C) A small tube with freshly prepared KOH solution should be placed in the
flask.
D) The end of the delivery tube should be above water level.
The correct answer is
a) A and B
b) A and C
c) A,B and C
d) A, B and D​

Answer 1

Answer:

c)

Explanation:

all these accompany the answer