Explanation

Explanation

The chemical name for quartz is silicon dioxide

Chemical Formula: SiO₂

Composition: Silicon (Si) and Oxygen (O)

Structure: A framework of silicon-oxygen tetrahedra

Common Names: Silica, Rock Crystal (for the clear variety)

Explanation

Afghanistan was the only country that voted against Pakistan's admission to the United Nations (UN)

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Pakistan officially joined the United Nations (UN) on 30 September 1947 just over a month after it came into existence.

Pakistan has been elected seven times (tied with Colombia and India) into the UN Security Council, with the most recent term in 2013.

Explanation

In MS Excel, the shortcut keys Ctrl + Shift + ; (semicolon) are used to show or enter the current time.

In MS Word, Alt + Shift + T is the shortcut key for inserting the current time.

Additional information

shortcut key in  MS Excell:

Which key is used to help in MS Excel?

F1

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Shift+Backspace

**

Which key is used to enter the current date in Excel?

 Ctrl+;

Explanation

Rashid Mahmood Langrial is the current chairman of the Federal Board of Revenue (FBR) since 07 August 2024

He replaced Malik Amjad Zubair Tiwana 

Langriyal, a Grade 21 officer, was previously serving as Secretary of the Power Division.

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Last check and update on 22-01-2026

Explanation

The famous line, "Our sweetest songs are those that tell of saddest thought,"

Poet: Percy Bysshe Shelley (1792–1822).

A major English Romantic poet, suggesting that profound sorrow often inspires the most beautiful and moving art. 

Explanation

If Earth had no atmosphere, the sky would appear black even during the day,

Hence, the sky would appear black, just like it does from space.

Explanation

The new name of Leningrad is Saint Petersburg.

In a referendum held in 1991

The city of Saint Petersburg was founded by Tsar Peter the Great on 27 May 1703.

It became the capital of the Russian Empire 

Explanation

Franklin D. Roosevelt wrote the New Deal 

The New Deal programs were primarily launched between 1933 and 1939 

Explanation

"Equinox"  means Equal duration of day and night.

The time or date (twice each year) at which the sun crosses the celestial equator 

During the equinoxes, solar declination is 0°

The September equinox is called the autumnal or fall equinox on 23 September

The March equinox is called the vernal or spring equinox on 19 March or as late as 21 March