Question

In a set-up to study"CO, is released during respiration", the water level did not rise in the delivery tube. Which of the following could be the reasons ?
(i) The conical flask is not airtight. (ii) Germinating seeds are dry.
(iii) Water is not coloured. (iv) KOH is not fresh.
(A) CO and (ii) (B) (ii) and (iii)
(C) (i), (ii) and (iv) (D) (ii) and (iv)


CBSE Class X Science VSA (1 Mark)

Answer 1

Answer:

(iii) Water is not coloured

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