Question

Which of the following steps can be followed for making the apparatus air tight?
i. placing the plants on glass plate
ii. using a suction pump.
iii. applying aseline to seal the bottom of jar.
iv. creating vacuum
A. i and ii
B. ii. and iii
C. i. and iii
D. ii. and iv​

Answer 1

Answer:

c option is correct

Explanation:

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Answer 2

C. i. and iii

Explanation:

i) Imagine the bell jar and then watch glass contain potassium hydro oxide we placing plant on glass plate, make sure that there is no gap between the tight jar and the bottom.so we can use this following order.

iii) when we apply the aseline  and seal with help of  moisture then the help jar set at the bottom, so we can follow the order