Explanation

Water molecules are held together by hydrogen bonds,

It is a type of strong intermolecular force

Where the slightly positive hydrogen of one molecule attracts the slightly negative oxygen of another, creating a "sticky" network that gives water unique properties like surface tension.

Explanation

Amino acids are the building blocks of proteins, which are long chains of amino acids linked together by peptide bonds.

There are 20 different amino acids that the human body uses to build proteins.

They are essential for various cellular processes, including structure, function, and regulation.

Explanation

• Carbon dioxide (CO2) is produced when trees and fossil fuels are burned, through a process called combustion.
• Combustion releases carbon dioxide and water vapor into the atmosphere.

Explanation

The velocity of sound in air at sea level under standard conditions (around 15°C or 59°F) is approximately 343 meters per second (m/s)

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

Explanation

The quote, "A right is a claim recognized by society and enforced by the state," is attributed to the prominent political theorist Harold Laski

Harold Joseph Laski was an English political theorist and economist.

He was served as the chairman of the British Labour Party from 1945 to 1946

Professor at the London School of Economics from 1926 to 1950. 

Explanation

Ms. Florence Nightingale was the founder of modern nursing.

She was an English social reformer.

She was born on 12 May 1820 in Italy.

She died on 13 August 1910 in England

Awards

• Royal Red Cross (1883)
• Lady of Grace of the Order of St John (LGStJ) (1904)
• Order of Merit (1907)

Additional information 

she was a manager and trainer of nurses during the Crimean War 

In this war, she organized to care for wounded soldiers.

Crimean War (Oct 1853- Feb 1856) was fought between The Russians and the British, French and Ottoman Turkish

Explanation

Epistemology is the theory of knowledge

It is the branch of philosophy 

It deals with the nature, origin, and scope of knowledge.

The term 'epistemology' was coined by James Fredrick Ferrier

It comes from the Greek words "episteme' (knowledge) and 'logos' (theory)

Explanation

The first man to land on the moon was Neil Armstrong

He took the first step to the lunar surface on 20 July 1969

He went to the lunar surface in called Apollo 11.

Additional information:

Buzz Aldrin became the second person to land on the moon 

Yurl Gagarin was the first person to go to space in the world.

Rakesh Sharma was the first Indian to go into space.

Explanation

The Khmer Rouge name was popularly given to members of the Communist Party of Kampuchea (CPK)

The name was coined in the 1960s by then-Chief of State Norodom Sihanouk 

Its Headquarters is in Phnom Penh, Cambodia

Dates of operation from June 1951 to March 1999