Question

on changes to blue
4. The description which most approximately suits sulphur dioxide gas is that it is colourless and :
(1) insoluble in water
(2) has pungent and suffocating odour
(3) lighter than air
(4) has smell of rotten eggs
C​

Answer 1

Answer:

construct a rectangle with adjacent side of length is 4.8cm and 4.2 cm

Answer 2

Answer:

I think

3 ( lighter than air)

is right