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

Oxy-acetylene welding is a very common welding process.

Gases used in welding and cutting processes include:

• shielding gases such as carbon dioxide, argon, helium, etc.
• fuel gases such as acetylene, propane, butane, etc.

oxygen, used with fuel gases and also in small amounts in some shielding gas mixtures

Explanation

Pakistan Army is the 9th most powerful Army in the world out of 140 countries.

US ranked 1st, Russia 2nd, China 3rd and India 4th in the list.

Explanation

Ukraine President outlined a 10-point peace plan to end the war with Russia.

Announced: December 2022

Ukraine president: Volodymyr Zelenskyy 

Explanation

In 2022, British-Pakistani actor Riz Ahmed became the first Muslim to win an Oscar for Best Live-Action Short Film. 

He won his debut Oscars gong for co-writing Aneil Karia's “The Long Goodbye” at the 2022 Oscars ceremony in Los Angeles.

while

Sharmeen Obaid-Chinoy may be best known for winning an Oscar — Pakistan's first in 2012

Explanation

Dame Louise Martin  was elected to the role by the Commonwealth Sports Movement in September 2015

8th President of the Commonwealth Games Federation

Preceded by Prince Tunku Imran of Negeri Sembilan

Dame Louise Martin belongs: to Scotland

Explanation

In a norm-referenced test (NRT), performance is evaluated by comparing individuals to a predefined group (the "norming group"). Key features:

Relative Ranking: Scores show how an individual performs compared to peers (e.g., "Top 10%").

Examples: SAT, IQ tests, or standardized aptitude tests.

Explanation

Glass and pitch are examples of pseudo solids.

Pseudo solid is a solid which possesses the property of liquids.

Glass is a pseudo solid and in a very slow process, it flows like a liquid due to which the base of glass gets thicker than top.

Explanation

حروفِ علت سے مراد ایسے کلمات ہیں جن سے کسی کام کا سبب بیان کیا جائے

مشلا
محنت کرنی چاہیے اس لیے کہ یہ ترقی کا پہلا قدم ہے۔

اضافی معلومات 

حروف عطف وہ حروف ہوتے ہیں جو دو اسموں یا دو جملوں کو آپس میں ملانے کے لیے استعمال ہوتے ہیں

Explanation

Here three years indicate that this sentence belongs to Present Continuous Tense. 

We use has been + ing form of verb with singular subject in this tense.

She has been nursing her youngest child for three years