Explanation

Venus has a thick atmosphere primarily composed of carbon dioxide, with clouds of sulfuric acid

• Venus is the brightest planet.
• It has an atmosphere but no moons.
• It's identical in size, chemistry and gravity.
• It has volcanoes, mountains and sand.
• It's also called Sister Planet of the Earth.

Explanation

White clothes reflect most of the sunlight, which helps keep the body cooler compared to darker clothes, which absorb more heat.

Explanation

• The speed of sound in air at sea level and 20°C (68°F) is approximately 343 meters per second.
  

The speeds of sound in different materials:

• Air: 343 m/s
• Water: 1433 m/s
• Wood: 3300-3600 m/s
• Brick: 4176 m/s
• Steel: 6100 m/s
• Diamond: 12000 m/s

Explanation

Pakistan's hydropower potential is estimated to be around 60,000 MW.

However, the country is only currently utilizing around 16% of this potential.

Explanation

Osman I, also known as Osman Gazi, was the founder of the Ottoman Empire

Reign: 1299–1324.

Osman was a Turkish tribal leader.

Explanation

Smallpox was eradicated in Pakistan in 1980, along with the rest of the world, as declared by the World Health Organization (WHO).

Explanation

There are six categories of the Nobel Prize:

Peace

Physics

Chemistry

Physiology or Medicine

Literature

Economics

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All Nobel price was Firstly invented by Alfred Nobel in 1901 except Nobel Prize in Economics was invented by Sveriges Riksbank  in 1968

History

Alfred Nobel (a Swedish chemist) initiated Nobel Prize in:

Peace

Physics

Chemistry

Physiology or Medicine

Literature

In 1901, Nobel Prize was first awarded in Stockholm, Sweden,

expected the Peace Prize in Kristiania (now Oslo), Norway.

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Nobel Prize in Economics started in 1968

In 1968, Sveriges Riksbank (Sweden's central bank) established the Prize in Economic Sciences in Memory of Alfred Nobel, founder of the Nobel Prize

Explanation

Cyclone سائیکلون

Explanation

The correct spelling is Height.

The other words (Light, Might, Sight) are spelled correctly.

Explanation

Pashtuns are the largest ethnic group in Afghanistan. 

Tajiks are the second-largest ethnic group in Afghanistan.

It comprises between 25% and 30% of the population.

The Tajiks in Afghanistan are mainly Sunni Muslims who follow the Hanafi sect.