Explanation

Captain Raja Muhammad Sarwar, the country's first recipient of Nishan-i-Haider

Born in Singhori village in Gujjar Khan on November 10, 1910

Sarwar joined the army in 1929 as a sepoy.

He was commissioned in the Punjab Regiment in 1944 and served in World War II.

In 1947, he volunteered to participate in the battle to retake Kashmir.

Explanation

Alzheimer's disease is a disease that affects the brain and nervous system.

It happens when nerve cells in the brain die.

ND12_8_2023

Explanation

On 21 July 1921, a young surgeon named Frederick Banting and his assistant Charles Best

On 11 January 1922, insulin was first used in the treatment of diabetes

Sh10-8-2023

Explanation

A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host.

Explanation

Earth's magnetic field always has a horizontal component except at  At 60*latitude 

At magnetic poles, the angle of dip is  $90^o$ . Hence the horizontal  component 

 $B_H=Bcos\theta =0$ 

Explanation

Liquified HCl has been cooled until the gas turns into a liquid.

ND06-08-2023

Explanation

Except at the magnetic pole, the Earth's magnetic field is always horizontal

 the horizontal component of the earth's magnetic field is zero at the magnetic poles.

Hence, Earth's magnetic field always has a horizontal component except at the magnetic poles where it is zero.

Explanation

The waves in which the particles of the medium travel in the same direction as the waves, are longitudinal waves.

Longitudinal waves are waves in which the individual particles of the medium move in a direction parallel to the direction of propagation of the disturbance. 

Sh5-8-2023

Explanation

Radio waves are  Electromagnatic waves

  with the longest wavelengths in the electromagnetic spectrum, typically with frequencies of 300 gigahertz 

Radio waves were first predicted by the theory of electromagnetism proposed in 1867 by Scottish mathematical physicist James Clerk Maxwell

SH5-8-2023

Explanation

A person climbing a hill bends forward in order to increase stability.

 Increase the stability of an object by lowering its center of gravity or increasing the width of its base

SH5-8-2023