Question

State which of the following is not likely to be an element
l) On heating it gives off a gas and leaves a residue.
ll) Burns in air to form carbon dioxide and water
lll) Changes into solid at 273 K and to a gas at 373 K

(1) I , (2) ll and lll , (3) l and lll (4) l, ll and lll
Explain your answer

Answer 1

Answer:

(3) l and lll

l. On heating it gives off a gas and leaves residue.

lll. Changes into solid at 273 K and to a gas at 373 K.

HOPE IT HELPS YOU

Answer 2

Answer:

ara ta muja follow to karo