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

 Paper chromatography works on the principle of adsorption and partition,

Where compounds are separated based on their movement through paper (stationary phase) with the help of a solvent (mobile phase).

Explanation

James Simpson, a Scottish doctor, is credited with discovering the anesthetic properties of chloroform in 1847

Explanation

Metals make up the majority of elements in the periodic table, especially on the left and center.

They are generally good conductors, malleable, ductile, and have high melting points.

Explanation

During lightning or electrical discharges, nitrogen (N₂) reacts with oxygen (O₂) to form nitric oxide (NO).

This is the first step in the natural nitrogen cycle involving atmospheric fixation.

Explanation

Hydrochloric acid (HCl): is a strong inorganic acid, also known as a mineral acid.

Citric acid, acetic acid, and lactic acid are organic acids found in citrus fruits, vinegar, and muscle tissue, respectively.

Explanation

Mass number = Protons + Neutrons

Given 6 protons and 6 neutrons, the mass number is 6 + 6 = 12.

Explanation

Dolomite is a carbonate mineral composed of CaMg(CO₃)₂.

It contains both calcium and magnesium carbonates, making it a double carbonate salt.

Explanation

Greenhouse Effect refers to the process where certain gases, like carbon dioxide and methane, trap heat from the sun in the Earth's atmosphere, leading to an increase in temperature.

It is a natural process, but human activities have intensified it, contributing to global warming.

Explanation

An anion is a negatively charged ion.

H⁻ (hydride ion) carries a negative charge, so it is an anion.