Explanation

• The average adult has a blood volume of about 5 liters (5-6 litres), though this can range from 4.5 to 5.5 liters.
• Male: About 5.5 liters.
• Female: About 4.5 liters.
• Proportion: Blood makes up roughly 7% of a person's total body weight. 

Last verified on 30-03-2026

Explanation

The first census in Pakistan was held in 1951.

Additional information:

Total nationwide censuses in Pakistan: 7

• 1st Census: 1951
• 2nd Census: 1961
• 3rd Census: 1972
• 4th Census: 1981
• 5th Census: 1998
• 6th Census: 2017
• 7th Census: 2023

Frequency: Every 10 years (approx.)

Historical start: 1872 (British rule, first census in the region)

Last verified on 17-01-2026

Explanation

 Hahn is involved in the German project aimed at developing an atomic bomb.

History:

On December 21, 1938, German scientists Otto Hahn and Fritz Strassmann split uranium atoms

and were surprised to find several lighter products, including barium-141, instead of the heavy elements they had anticipated.

Additional information:

J. Robert Oppenheimer was called the "father of the atomic bomb".

Explanation

• In Hajj, the ritual of stoning the devil is called Ramy al-Jamarat
• It involves throwing pebbles at three pillars (or walls) in Mina
• During the last stages of Hajj (10th-12th/13th of Dhu al-Hijjah).
• Requiring at least 49 pebbles.

 Last updated NA 13-04-2026

Explanation

Explanation

Explanation

When the first wahi was revealed to the Holy Prophet ﷺ?

610AD
*****

What was the age of Rasool Ullah (PBUH) at the time of the first Wahi?

40 years 6 months

How many verses (Ayats) were in the first Wahi?

5

Name the first prescriber of wahi in Makkah.

***

Who was the first writer of “Wahi” in Quraish?
Hazrat Zaid bin Sabit (RA)

The first Wahi was descended on Cave Hira.

پہلی وحی غارحرا میں نازل ہوئی تھی۔

Sh2-9-2023

Explanation

• The Indus Waters Treaty, signed on September 19, 1960, between India and Pakistan and brokered by the World Bank.
• It allocates the Western Rivers (Indus, Jhelum, Chenab) to Pakistan and the Eastern Rivers (Ravi, Beas, Sutlej) to India.
• It was signed in Karachi by Pakistan President Ayub Khan, Indian Prime Minister Jawaharlal Nehru, and Mr. W.A.B. Illif. 
• The Treaty became effective on April 1, 1960.

Explanation

The fluid in your lead-acid battery is called Electrolyte.

It's actually a mixture of sulphuric acid and water.

Explanation

The material used for bleaching paper pulp is sodium hypochlorite.

It acts as an effective bleaching agent.

It helping to remove color and impurities from the pulp.