Explanation

• A stretched spring possesses potential energy.
• When a spring is stretched or compressed, energy is stored in it.
• This stored energy is called elastic potential energy.
• It can be converted into kinetic energy when released.
• The more the stretch, the more energy is stored.

Last verified on 08-06-2026

Explanation

• Apple is rich in iron and dietary fiber.
• Iron helps in blood formation (RBC production).
• Fiber helps in digestion and stomach health.
• Apple also contains vitamins and antioxidants.
• It is a very healthy fruit for daily use.

Last verified on 07-06-2026

Explanation

• The usual gases used for lifting airships are hydrogen and helium.
• Hydrogen is the lightest known gas and thus has great lifting capacity,
• Helium is not as buoyant but is far safer than hydrogen because it does not burn.

Last verified on 01-04-2026

Explanation

Explanation

• Singular noun: Mouse
• Plural noun: Mice 
• The plural for a computer mouse is either "mice" or "mouses" according to most dictionaries, with "mice" being more common.

Last verified on 06-06-2026

Explanation

• Hanna Lake is located near Quetta city (Balochistan, Pakistan).
• It is about 10 km away from Quetta in Urak Valley.
• The lake was built in 1894 during British rule.
• It is a famous tourist spot in Pakistan.
• It covers an area of about 27 acres.

Last verified on 06-06-2026

Explanation

• Singular noun: Child
• Plural noun: Children
• Child means بچہ 
• Children means بچے

Last verified on 06-06-2026

Explanation

• “Worried about” is the correct fixed prepositional phrase.
• It shows concern for something specific.

Last verified on 05-06-2026

Explanation

• Delegate means to assign responsibility or to send someone as a representative.
• Delegate means نمائندہ 
  
• Representative means کسی کو بطور نمائندہ بھیجنا
• Assign means ذمہ داری تفویض کرنے کے لئے

Last verified on 04-06-2026

Explanation

• Lahore is called the "City of Colleges." 
• University of the Punjab ranks #1 in Lahore
• Because this city has the greatest number of colleges and universities.
• The University of Lahore is the largest private-sector university in Pakistan
• The Oldest University of Lahore is King Edward Medical University (1860)
• It is the second-largest city in Pakistan
• 26th largest in the world

Additional information 

• Manchester of Pakistan. Faisalabad.
  Gateway of Pakistan. Karachi.
  Brasilia of Pakistan. Islamabad.
  Valley or city of Flowers. Peshawar.
  City of Textiles. Faisalabad. 

Last updated by NA on 27 April 2026