Explanation

log5​25(125)(625)​=log5​5253.54​=log5​5257​

=log5​55=5log55​

=5 

Explanation

• The speed of sound in air at 0°C (32°F) is 332 meters per second.

The speed of sound in different materials:

• Air: 332 m/s
• Sea water: 1530 m/s
• Lead: 2160 m/s
• Gold: 3240 m/s
• Brick: 3650 m/s
• Copper: 4760 m/s
• Glass: 5100 m/s
• Aluminium: 6420 m/s

Explanation

The Wall of Knowledge, also known as the "Walls of Knowledge" or "Knowledge Park".

It is a public art installation located in Lahore, Pakistan.

It is a series of walls displaying inscriptions of famous quotes, poems, and excerpts from notable literary and intellectual figures, including Allama Iqbal, Bulleh Shah, and Faiz Ahmad Faiz, among others.

Explanation

اردو زبان ادب کے مشہور نقاد۔ پیدائش 15ستمبر سنہ 1908ء کو عظیم آباد میں ایک ممتاز خاندان میں ہوئی۔ ان کے والد ڈاکٹر عظیم الدین احمد جہاں پٹنہ یونیورسٹی میں عربی کے پروفیسر تھے وہیں اردو اور فارسی کے شاعر بھی تھے۔ ان کا تخلص عظیم تھا

Explanation

Syed Sajjad Zaheer was an Urdu writer, Marxist ideologue and radical revolutionary who worked in both India and Pakistan.

Born: November 5, 1899, Lucknow, India

Died: September 11, 1973, Almaty, Kazakhstan

Explanation

The formula to commence prayer by raising the hands upto the ears and bringing them down saying Al-Laahu Akbar and then put them below the navel is called "Takbeer-e-Tahreema".

It means that all other things are now forbidden than the prayer.

Explanation

The Battle of Nihawand, fought in 642 CE.

It was the last major confrontation between the Muslim forces under Hazrat Umar (RA) and the Persian Empire.

It resulting in a decisive victory for the Muslims and the decline of the Persian Empire.

Explanation

A switch is used to control the On/Off state of an electrical circuit.

It allowing current to flow or stopping it when needed.

Explanation

A nebula is a giant cloud of dust and gas in space.

Some nebulae come from the gas and dust thrown out by the explosion of a dying star, such as a supernova.

Explanation

Hazrat Umar (RA) divided the Muslim Empire into 10 provinces for administrative purposes.

The 10 provinces were:

1. Arabia
2. Basra (Iraq)
3. Kufa (Iraq)
4. Syria
5. Jordan (part of the Syrian province)
6. Palestine (part of the Syrian province)
7. Egypt
8. Persia (modern-day Iran)
9. Khorasan (modern-day Afghanistan and parts of Iran)
10. Armenia (which included parts of modern-day Turkey and Caucasus region)