Explanation

• Pakistan Standard Time (PST) is 5 hours ahead of Greenwich Mean Time (GMT).
• Suggested by Professor Muhammad Anwar in 1951.
• GMT is the standard time of Greenwich, UK, used as a reference worldwide.
• Example: When it is 12:00 noon GMT, it is 5:00 PM in Pakistan.

Last verified on 17-03-2026

Explanation

• The law that states mass can neither be created nor destroyed is the Law of Conservation of Mass.
• This law states that mass remains constant in a chemical reaction.
• Matter cannot be created or destroyed, only transformed.

Last verified on 02-04-2026

Explanation

• Platelets, also called thrombocytes.
• They are blood cells that play a vital role in blood clotting.
• When a blood vessel is injured, platelets aggregate to form a plug that stops the bleeding.

Last verified on 02-04-2026

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.

Last verified on 02-04-2026

Explanation

Explanation

• Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia.
• It is the world's fifth-most populous country.
• It is the world's second-largest Muslim population.
• It is the 33rd-largest country by area.
• The capital of Pakistan is Islamabad.
• The Currency of Pakistan is the Pakistani rupee.

Last verified on 02-04-2026

Explanation

• During the day, plants perform photosynthesis, absorbing carbon dioxide and releasing oxygen.
• At night, in the absence of sunlight, they undergo respiration, where they take in oxygen and release carbon dioxide.

Last verified on 02-04-2026

Explanation

• The Khunjerab Pass is the highest mountain pass in the world.
• It is located at an elevation of approximately 4,693 meters (15,397 feet).
• It is situated on the border between Pakistan and China.
• It connecting the Gilgit-Baltistan region of Pakistan with China's Xinjiang region.

Last verified on 02-04-2026

Explanation

In the Fahrenheit scale:

• The freezing point of water is 32°F
• The boiling point of water is 212°F

Last verified on 02-04-2026

Explanation

• The freezing (or melting) point of ice on the Fahrenheit scale is 32°F.
• This is the temperature at which ice turns from a solid to a liquid. 
• The Fahrenheit scale also defines the boiling point of water as 212°F.
• A change of 1°F on the Fahrenheit scale is less than a 1°C change on the Celsius scale.

Last verified on 02-04-2026