Explanation

After the 1979 Soviet invasion, around 4.5 million Afghans took refuge in Pakistan, making it one of the largest refugee movements.

The influx affected Pakistan’s economy, security, and demographics, with many refugees settling in camps and urban areas.

Explanation

The speed of sound is maximum in solids because particles are tightly packed, allowing faster vibration transfer.

In iron, sound travels around 5120 m/s, much faster than in air (343 m/s) or water (1482 m/s).

Explanation

"A small car" becomes "Small cars" in plural.

The verb "is" changes to "are", and "a great vehicle" becomes "great vehicles" to match the plural subject.

Explanation

"پانی مذکر ہے، اس لیے "بہہ رہا تھا" کا استعمال درست ہے۔

"بہہ رہی تھی اور "بہہ رہی تھیں" مونث کے لیے استعمال ہوتے ہیں، جو یہاں غلط ہیں۔

Explanation

To find the number of subsets of a set A:

Number of subsets = 2^n

where n is the number of elements in the set.

In this case:

A = {a, e, i, o, u}

n = 5

Number of subsets = 2^5 = 32

Explanation

Explanation

A list of items will be given to you by the manager.

• This is the correct passive voice conversion of the given active sentence.
• "Will give" (future tense) changes to "will be given" in passive form.

Explanation

Explanation

Explanation

A.O. likely stands for a retired Air Officer in the Air Force