Explanation

• Electronegativity is the ability of an atom to attract a shared pair of electrons in a covalent bond.
• It measures the ability of an atom to pull electrons towards itself.

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Explanation

Fats are found in various food sources, including:

• Oil (such as olive oil, coconut oil, etc.)
• Butter
• Margarine
• Seeds (such as sunflower seeds, pumpkin seeds, etc.)
• Nuts (such as almonds, walnuts, etc.)

Explanation

• Radioactivity was discovered by Henri Becquerel, a French physicist, in 1896.
• He discovered this when he was studying uranium and noticed that it emitted radiation without an external source of energy.
  
• The term radioactivity was coined by Marie Curie, who, along with her husband, investigated this phenomenon.
• Rutherford, a British physicist, studied the properties of radioactive decay and named the particles alpha, beta and gamma.

Explanation

Abu al-Qasim Khalaf, Known as a pioneer of surgery

Author of the medical encyclopedia Kitab al-Tasrif

He was an Arab physician, surgeon, and chemist 

Born:  Medina Azahara, al-Andalus (near present-day Cordoba, Spain)

Died: (aged 76–77)

MAJAR ACHIEVEMENT

He was the first physician to identify the

• Hereditary nature of haemophilia 
• Describe an abdominal pregnancy
• Root cause of paralysis

He also developed surgical devices for Caesarean sections and cataract surgeries.

Explanation

Syed Mohsin Naqvi was elected unopposed as the 37th chairman of the Pakistan Cricket Board (PCB)

Appointing date: 6 February, 2024

Tenue: three-year term

Replaced: Zaka Ashraf

Explanation

= (25/100)*25

= (25*25)/100

= 625/100

= 6.25

Explanation

To find out what number 15% of is equal to 45, you can set up the equation:

$0.15\times \text{X}=45$

To solve for X (the number we're looking for), divide both sides by 0.15:

$\text{X}=\frac{45}{0.15}$

$\text{X}=300$

So, 15% of 300 is equal to 45.

Explanation

**

ND10-1-2023

Explanation

The central color of a rainbow is Green

ROYGBIV: This mnemonic helps remember the order of colors. 

1. Red (outermost)
2. Orange
3. Yellow
4. Green (central) 
5. Blue
6. Indigo
7. Violet (innermost)