Explanation

 The amount of heat required to vaporize one mole of a liquid at its boiling point is called Molar heat of vaporization. 

"Molar" refers to one mole of a substance, and "vaporization" means the process of turning a liquid into a gas. 

Explanation

The National Assembly has a total of 342 seats.

Of these, 266 are filled through direct elections.

10 seats are reserved for religious minorities.

60 seats are reserved for women, allocated through proportional representation to parties with more than 5% of the vote.

Explanation

Istilam is the act of kissing Hajar al-Aswad or gesturing towards it at the beginning and at the end of each circuit of the Kaaba during the rite of Tawaf.

In Hajj, touching the Black Stone is called Istilam.

 Istilam is an established sunna action of the Tawaf

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Explanation

Foremost means اہم

Unimportant means غیر اہم

Explanation

• The correct sentence is: "As for me, I will be happy to lend a hand."
• "For" is the correct preposition to use in this context.
• It indicating "as far as I am concerned" or "with regard to me".

Explanation

According to World Bank and the Pakistan Institute of Development Economics (PIDE)

Approximately 61.3% to 64% of Pakistan's total population lives in rural areas

"Urban area" can refer to towns, cities, and suburbs.

Rural areas, often called "the country," have low population density and large amounts of undeveloped land.

Explanation

My mother is the sister of your brother.

Your brother’s sister is also you (if you are female) or another sister in your family.

So, my mother is your sister.

If my mother is your sister, then I am your niece or nephew (depending on gender).

Answer: I am your niece/nephew.

Question updated 03-March-2026

Explanation

Mareena is afraid of spiders.

نفیسہ مکڑیوں سے ڈرتی ہے۔

"Afraid" is one of those adjectives that is followed by "of" when introducing the thing or person someone fears.

Afraid of means خوفزدہ

Explanation

Positive rays, also known as canal rays, are formed when electrons in a discharge tube collide with gas atoms, ionizing them and creating positively charged ions.

These ions then travel towards the cathode and are repelled by it, passing through holes in the cathode to form a stream of positive rays. Since these rays are composed of ions derived from the gas present in the tube,

Their nature is directly determined by the composition of the residual gas within the discharge tube. 

Explanation

The density of any substance, including the human body, depends on its mass and volume.

Specifically, the density is determined by the amount of matter (mass) within a given space (volume).

For a human body, the density can be calculated by comparing its weight in air to its weight when submerged in water, as this relates to the volume of water displaced.