Symmetry | MCQs

Explanation

Both CS₂ (carbon disulfide) and SO₃ (sulfur trioxide) have zero dipole moment.

Note….: Here CS 2 and SO3 options are correct. However, FPSC did not give a choice of both A and B.

Explanation

Explanation

Explanation

1. Center:

To check for symmetry, we first need to identify the center of the graph.

The equation is in the form of a circle, x^2 + y^2 = 1, which has its center at the origin (0,0).

2. x-axis symmetry:

A graph is symmetric about the x-axis if replacing y with -y in the equation does not change the equation.

Let's test this:

x^2 + (-y)^2 - x = 1

x^2 + y^2 - x = 1

As we can see, the equation remains the same, so the graph is symmetric about the x-axis.

Explanation

The unit cell with the highest symmetry is cubic. 

Among all crystal systems, the cubic unit cell has the highest symmetry because:

• All sides are equal: $a=b=c$

• All angles are right angles α=β=γ=90∘

• It has multiple axes of symmetry and mirror planes

This high degree of symmetry leads to highly uniform and isotropic properties.