Explanation

Explanation

• Main Cause: Freon / CFCs
• Effect: Breaks down O₃ molecules → more UV-B radiation
• Other Contributors: Halons, carbon tetrachloride
• Result: Skin cancer, cataracts, climate impact

• The Montreal Protocol (1987) aimed to reduce CFC emissions
• Ozone layer protects Earth from harmful ultraviolet rays

Explanation

• Ctrl + V is the shortcut key used to paste copied or cut text.

Additional information:

• Ctrl + C — Copy
• Ctrl + X — Cut
• Ctrl + Z — Undo
• Ctrl + A — Select All

Last verified on 23-08-2026

Explanation

• 1 hp = 746 W
• 1 hp = 0.746 kW
• 1 kW = 1.34 hp
• 1 W = 0.00134 hp
• Standard unit system: SI unit of power is Watt

Last verified on 23-06-2026

Explanation

Given that the radius of a circle is increased to twice its original length

We have to find the increase in the area of the circle

Area of circle = πr²

Where r is the radius of the circle

Now, r = 2r

Area of circle = π(2r)²

= 4πr²

Last updated by NA on 27 April 2026

Explanation

Ancestors means people from whom one is descended — forefathers.

Ancestors means باپ دادا/وہ لوگ جن سے ایک اترا ہے

• Forebears means باپ دادا
• Tribe means قبیلہ

Last verified on 17-03-2026

Explanation

CPU speed is primarily measured in Hertz (Hz), and Gigahertz (GHz) for modern processors

The fundamental unit is Hertz (Hz), where 1 Hz = 1 cycle per second.

Modern Units: Most, if not all, modern processors use Gigahertz (GHz), where  1 GHz = 10^9 Hz (one billion cycles per second).

Context: It is often referred to as the "clock speed" or "clock rate" of the CPU.

Mbps measures internet speed.

Mbytes measure data size.

Last updated 15-feb-2026

Explanation

Explanation

اسم معرفہ: یہ وہ اسم ہوتا ہے جو کسی مخصوص شخص، جگہ یا چیز کو ظاہر کرتا ہے۔

اس کی چار اقسام ہیں:

اسم علم: جو کسی خاص شخص یا جگہ کے نام کے طور پر استعمال ہوتا ہے (مثلاً: پاکستان، احمد)۔

اسم ضمیر: جو کسی شخص یا چیز کی جگہ ضمیر کے طور پر استعمال ہوتا ہے (مثلاً: وہ، یہ)۔

اسم اشارہ: جو کسی مخصوص چیز یا شخص کی طرف اشارہ کرتا ہے (مثلاً: یہ، وہ)۔

اسم موصول: جو کسی جملے کے ساتھ مل کر مکمل معنی فراہم کرتا ہے (مثلاً: جو، جس)۔

Explanation

• The total length of the Line of Control (LoC) is 861 km.
• Separates Pakistan- and India-administered Kashmir.
• Established under the Simla Agreement, 1972.
• Previously called the Ceasefire Line.
• Established 2 July 1972