Question

An element ‘X’ is yellow coloured solid, insoluble in water but soluble in carbon disulphide.

It has low melting point 114.5°C. It boils at 445°C and it burns with pale blue flame forming

pungent smelling gas ‘Y’ which turns moist blue litmus red and finally colourless. ‘X’ and ‘Y’

are

(a) C, CO2

(b) N, NO2

(c) S, SO2

(d) I2, I2O5

Answer 1

Explanation:

S SO2

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