Explanation

• Silviculture is the science and practice of establishing, growing, managing, and harvesting forest trees.
• It deals with the growth and development of forests.
• It aims to maintain healthy and productive forest resources.

Additional information:

• Forestry: Science and management of forests and forest resources.
• Agriculture: Cultivation of crops and rearing of animals.
• Arboriculture: Cultivation and management of individual trees and shrubs.

Last verified on 05-10-2026

Explanation

• In SONAR, the wavelength of the sound wave does not change simply because the submarine is farther away.
• Wavelength depends on the frequency of the sound and its speed in the medium, not on the distance traveled.

Additional information:

• SONAR: Sound Navigation and Ranging
• It uses sound waves to detect and locate underwater objects.

Last verified on 05-10-2026

Explanation

• The correct preposition after “approve” is “of” when expressing agreement or acceptance.
• The correct phrase is “approve of hunting.”
• “Approve of” means to consider something acceptable or satisfactory.

Last verified on 05-10-2026

Explanation

Explanation

• Upper Chenab Canal takes off from Head Marala on the Chenab River.
• Head Marala is located near Sialkot, Punjab, Pakistan.

Additional information:

• Lower Chenab Canal → Khanki
• Upper Jhelum Canal → Mangla
• Lower Jhelum Canal → Rasul

Last verified on 05-10-2026

Explanation

• Kallar Kahar Lake is situated in Chakwal District, Punjab.
• It is a natural saltwater lake.
• It is also a tehsil (subdivision) of Chakwal District.
• The lake is famous for its scenic beauty and migratory birds.
• It lies on the Lahore–Islamabad Motorway (M-2).

Last verified on 05-10-2026

Explanation

• GHQ (General Headquarters) is the headquarters of the Pakistan Army.
• It is located in Rawalpindi, Punjab, Pakistan.
• Established: 1947, after the independence of Pakistan.

Additional information:

• Pakistan Navy: Naval Headquarters — Islamabad
• Pakistan Air Force: Air Headquarters — Islamabad

Last verified on 05-20-2026

Explanation

• The Yangtze River in China is the longest river in Asia.
• It is the third-longest river in the world.
• It stretches over 6,300 kilometers (3,917 miles).

Additional information:

• The smallest river in China is the Qian River.
• It is part of the Xi River system.

Last verified on 05-10-2026

Explanation

• Surah Yusuf is the 12th Surah of the Holy Quran.
• It contains 111 verses.
• The Surah was revealed in Makkah.
• It is named after Prophet Yusuf (AS).
• The story begins with the dream of Prophet Yusuf (AS) and includes his separation from his family and eventual reunion.

Last verified on 05-10-2026

Explanation

• Flash memory is a type of EEPROM that can be electrically erased and reprogrammed in blocks.
• It is non-volatile memory, meaning it retains data even when power is turned off.
• It is widely used in USB drives, SSDs, and memory cards.

Last verified on 05-10-2026