Explanation

I came across an old friend in Islamabad this morning.

آج صبح اسلام آباد میں ایک پرانے دوست سے ملاقات ہوئی۔

The phrase "came across" means to encounter or find something or someone unexpectedly.

Here, it indicates meeting an old friend by chance.

Explanation

Arithmetic sequences

13,15,17,19,21,23,25,27,29,31,33...

ND18-9-2023

Explanation

 She always keeps on watching dramas.

وہ ہمیشہ ڈرامے دیکھتی رہتی ہے۔

"Watching" is correct

The phrase "keeps on" is a phrasal verb meaning to continue doing something, and it's always followed by a verb in the -ing form (called a gerund).

Explanation

The transistor is a semiconductor device with at least three terminals.

These terminals are typically referred to as the :

• Emitter
• Base
• Collector

They allow the transistor to control the flow of electrical signals and power. 

Explanation

Metalloids are known to have electronic band structures that are similar to semimetals or semiconductors.

Metalloids are known to form amphoteric or weakly acidic oxides.

These elements have the ability to form metallic alloys.

ND18-9-2023

Explanation

When entering text within a document, the enter key is normally pressed at the end of every Paragraph. A paragraph in Word is any text that ends with a hard return.

Explanation

The 6th period of the modern periodic table contains 32 elements.

This period is known as the "extended" period and includes elements from the Lanthanide series. 

It is the longest period of the periodic table

Explanation

The Base is the one or the number that is repeatedly multiplied by itself. -5 is the base, and the 2 is the exponent.

Explanation

Windows logo key + Home: Minimize all except the active desktop window (restores all windows on the second stroke).

Windows logo key + Shift + Up arrow: Stretch the desktop window to the top and bottom of the screen.

Explanation

Destroy   برباد کرنا

build تعمیر کرنا

ND18-9-2023