When an oxygen atom is attached to a carbon atom, the carbon atom becomes more acidic oxidized reduced basic

             When an oxygen atom is attached to a carbon atom, the carbon atom becomes more Oxidized.

                        In chemistry oxidation reduction are defined as,

                Addition of Oxygen

                Removal of Hydrogen

                Removal of Electrons

                Addition of Hydrogen

                Removal of Oxygen

                Addition of Electrons

Example:

                                CH₄  +  2 O₂    →    CO₂  +  2 H₂O

In above reaction the carbon atom in CH₄ has an oxidation number of -4 as it is bonded to less electronegative atom i.e. Hydrogen while, on product side the oxidation number of Carbon in CO₂ is +4 as it is attached to more electronegative oxygen atom. Hence, the oxidation number has increased from -4 to +4.

Carbon is also oxidized in reference of addition of oxygen and removal of hydrogen as defined above. Therefore, we can say that when an oxygen atom attaches to carbon atom the carbon gets oxidized.

oxidized

Explanation:

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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it would be a gas formation