Explanation

Commences means آغاز کرنا

Concludes means اختتام

Ends means ختم

Explanation

The correct preposition here is "at".

Because it indicates the location (school) where the social service week is taking place.

Explanation

Explanation

Start means شروع

End means آخر

Explanation

"At the station": Indicates the location where they waited.

"For twenty minutes": Specifies the duration of waiting.

Use "at" for general locations (e.g., at the park, at home).

Use "for" to indicate duration (e.g., for hours, for days).

Explanation

Kinetic energy is the energy an object possesses due to its motion.

The faster the object moves, the more kinetic energy it has.

Explanation

Hertz (Hz) is the unit used to measure processor speed.

It indicating how many cycles per second the processor can execute.

Modern processors are measured in:

• Megahertz (MHz) - millions of cycles per second
• Gigahertz (GHz) - billions of cycles per second

Explanation

Monarchy means بادشاہت یا سلطنت

Monarch means بادشاہ یا سلطان

A government ruled by a king or queen is called a Monarchy.

In a monarchy, power is usually inherited and passed through a royal family.

Explanation

The Thar Desert is located in the eastern part of Pakistan, specifically in the Sindh province.

It stretches from Cholistan in Punjab to the southern part of Sindh. 

About Thar Desert

15% located in Pakistan

85% located in India

Also called Friendly Desert

Located near Badin, Sindh 

Famous for: Sand 

Coal also found in Thar 

also known as Great Indian Desert

Explanation