Explanation

PIA flight landed in china in 1963

 PIA, in 1964 became the first non-Communist airline to fly to China

PIA was founded on 29 October 1946 as Orient Airways,

Orient Airways Ltd. was an airline established in 1946 new name Pakistan International Airlines in 1955

The airline shifted operations to the newly independent state of Pakistan in 1947.

Pakistan International Airlines is an international airline of Pakistan

SH19-8-2023

Explanation

Frogs have a three-chambered heart.

• It consists of two atria and one ventricle.
• The right atrium receives deoxygenated blood from the body organs.
• The left atrium receives oxygenated blood from the skin and lungs.
• Both the atria send the blood to the ventricle.
• Since there is only one ventricle there is the mixing of both oxygenated blood and deoxygenated blood

Sh18-8-2023

Explanation

A rectifier is an electrical device that converts Alternating Current (AC) into Direct Current (DC).

It works by allowing current to flow only in one direction using diodes.

Explanation

DRAM memories need a refresh.

Dynamic Random Access Memory (DRAM).

DRAM must be refreshed many times per second to store information, otherwise, it will lose what it is holding.

DRAM is the most common type of memory in use today.

ND18-4-2023

Explanation

The parliament initially had 210 seats

Including 10 women, but in 1985 it increased to 237 seats, and then to 342 seats.

Currently, there are  342 seats in the Diet.

Of these, 272 are directly filled with elections.

Explanation

The theory of relativity was given by Albert Einstein in the early 20th century.

. It encompasses both the Special Theory of Relativity (1905) and the General Theory of Relativity (1915),

Explanation

You had better take care of your health.

بہتر تھا کہ آپ اپنی صحت کا خیال رکھیں۔

The phrase "had better" is used to give strong advice or a warning.

It is followed by the base form of the verb.

Explanation

Explanation

The first Pakistani to climb Mount Everest was Nazir Sabir.

He achieved this feat on May 17, 2000, as part of a team on the Mountain Madness Everest Expedition.

He was also the first Pakistani to climb K2, Gasherbrum II, Broad Peak, and Gasherbrum I (Hidden Peak).

Explanation

• According to the United States Energy Information Administration (EIA), Russia has the largest natural gas reserves in the world.
• With an estimated 1,688 trillion cubic feet (47.8 trillion cubic meters) as of 2020.