Explanation

The first process in a petroleum refinery is Distillation, also known as Fractional Distillation.

This process separates crude oil into various fractions or types of hydrocarbons, based on their boiling points and molecular weights.

The processes in a petroleum refinery:

1. Cracking
2. Reforming
3. Isomerization
4. Hydrotreating
5. Hydrocracking
6. Catalytic Cracking
7. Alkylation

Explanation

CoronaVac is an inactivated virus COVID-19 vaccine developed by Sinovac Biotech, a Chinese biopharmaceutical company based in Beijing, China.

It was approved for emergency use in China in February 2021.

It has since been used in several countries, including Brazil, Chile, and Indonesia.

Explanation

Ilm Al-Iqtisad was a book written by Muhammad Iqbal, the great poet-philosopher of the Indian subcontinent.

It was published in 1903.

Explanation

مجلہ اوراق کے ادیب کا نام ڈاکٹر وزیر آغا ہے۔

Explanation

Initially, the average of five numbers is 27, so the sum of these five numbers is:

5 x 27 = 135

If one number is excluded, the average becomes 25, which means the sum of the remaining four numbers is:

4 x 25 = 100

Now, let's find the excluded number by subtracting the sum of the remaining four numbers from the initial sum:

135 - 100 = 35

So, the excluded number is 35.

Explanation

غزل کا پہلا شعر مطلع کہلاتا ہے۔

Explanation

In January 2020, Ukraine International Airlines Flight 752 was tragically shot down in Iran shortly after takeoff.

This led to significant casualties, including passengers from multiple countries.

Explanation

In websites, hyperlinks allow users to navigate from one page or section to another.

These links are clickable and connect various parts of the site or external pages.

Explanation

آخری شب کا ہم سفر قرت العین حیدر کا ناول ہے۔

Explanation

We are selecting three different posts here, so order matters.

Thus, total ways of selecting a President, VP and Water-boy from a group of 10 people would be 10P3.