Question

Why oxygen is called gas? choose the correct option. (A) Oxygen has neither fixed shape nor fixed volume. (B) Oxygen does not diffuses in air easily(C) Oxygen exerts pressure when filled in a container. (D) Oxygen cannot be liquefied. *

Both C and D

A only

All except D

Both A and C​

Answer 1

Heya....!!

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$\huge{\pink{\underline{\sf{Option.D}}}}$

Explanation:-

➡️Option.A (Oxygen has neither fixed shape not fixed volume)

A gas has neither a definite shape nor a definite volume. Here oxygen is also a gas .So option.A✔️✔️

➡️Option. B(Oxygen does not diffuses air easily)Diffusion is faster at higher temperatures because the gas molecules have greater kinetic energy.❌❌

➡️ Option.C(Oxygen experts pressure when filled in a container.)The pressure exerted by gas is due to random motion of particles.These collisions with the walls of the container exherts pressure.✔️✔️

➡️Option.D(Oxygen can't be liquefied)we can use liquid nitrogen to liquify oxygen. The usual way to do this is to pass oxygen gas from a compressed gas cylinder through a coil of hollow copper pipe which is submerged in liquid nitrogen.But it not says that oxygen is a gas.❌❌

Explore more:-

❇️Oxygen exerts pressure due to the collisions of the molecules on the walls of the containing vessel.

❇️Oxygen exist as a diatomic molecule.

❇️It has less boiling point.

❇️Oxygen exists as a gas due to a smaller size

❇️The intermolecular forces between oxygen are weak van der Waals forces. So, oxygen exists as a gas.