Explanation

The Great Wall of China was built during the reign of Qin Shi Huang.

He is the First Emperor who united China.

Initially constructed around 221 BC.

The wall was created as a defense against the Mongols.

The length of the Ming Great Wall is 8,851 km (5,500 mi).

The official total length of the Great Wall is 21,196 km (13,170 mi).

Explanation

After casting, ordinary cement concrete shrinks on drying.

This shrinkage is a natural process where water evaporates from the concrete, causing it to reduce in volume.

The shrinkage happens even without changes in mass or temperature, driven by the loss of capillary water from within the concrete. 

Explanation

About National Anthem of Pakistan:

• Written by: Hafeez Jalandhari in 1952
• Music by: Ahmad G. Chagla in 1949
• Adopted on: August 13, 1954
• First recorded by: Ahmed Rushdi in 1954
• Re-recorded after 68 years

• 15 lines in the National Anthem of Pakistan
• 48 words in the National Anthem of Pakistan
• First played in front of Raza Shah Rahalvi of Iran
• "Jan-i-Istaqbal" means Symbol of ambitions
• First played on national radio on August 14, 1947
• Duration of the National Anthem of Pakistan: 80 seconds (1 minute 20 seconds)
• Pakistan's National Anthem is written in: Persian

Explanation

The height of Hazrat Adam (AS) was 90 feet.

Adam is a word of Herbew language.

Hebrew is official language in Israel.

He was the first Muslim, as the Quran states that all the Prophets preached the same faith of Islam.

Known for being the first human being.

His spouse was Hawwā (حواء).

Hazrat Adam (AS) was 130 years old when Shees (AS) was born.

He spoke the language in the Garden of Eden.

His total age was 930 years.

Hazrat Adam (AS) met with the Holy Prophet ﷺ on the 1st heaven.

He had 3 sons.

His grave is located in Sri Lanka.

Explanation

Limestone is a Sedimentary Rock, Stratified Rock, Aqueous Rock.

Limestone consists of calcium carbonate,

Which has the chemical formula CaCO3.

Calcium carbonate is a chemical compound

It is a common substance found in rocks as the minerals calcite

RK11-12-22

Explanation

Explanation

The province of NWFP (North-West Frontier Province) was renamed Khyber Pakhtunkhwa on April 19, 2010.

It following the 18th Amendment to the Constitution of Pakistan, with 90 votes in favor.

NWFP was established in 1901.

At the time of Pakistan's independence in 1947, the Indian National Congress was a significant political party in NWFP.

Explanation

• If the pH value is greater than 7, the solution is basic (also known as alkaline).
• This means that the concentration of hydroxide ions (OH-) is higher than the concentration of hydrogen ions (H+).

Key Points:

• pH < 7: Acidic
• pH = 7: Neutral
• pH > 7: Basic (or alkaline)

Explanation

Iran Capital is Tehran.

Iran Currency is Rial.

Iran official language is Persian.

Iran located is in Continent Asia.

Iran Primary Religion is Islam.

Iran Head of Govt. is President – Ebrahim Raisi.

Iran Parliament called Majlis.

Explanation