Explanation

• Prophet Muhammad PBUH have at the age of 40.
• He and his wife had six children — two boys (who did not live into adulthood) and four girls.
• By the time he was 40, he began having religious visions that would change his life.
• This is Prophet Muhammad's mosque in Medina.
• At the age of 40 in 11 BH (610 CE), Muhammad is said to have received his first verbal revelation in the cave called Hira, which was the beginning of the descent of the Quran that continued up to the end of his life.

Last verified on 02-04-2026

Explanation

Explanation

• Al-Baqarah (The Cow or The Heifer) is the second and longest chapter of the Quran, with 286 verses.
• It derives its name from the story of the cow (vv. 67-73).
• Verse 282, the longest verse, is known as 'āyatu d-dayn.
• It consists of 25,500 letters and is positioned in Juzʼ 1–3.
• The chapter has 40 Rukus.
• It is classified as Medinan.

Additional information:

• Hazrat Ibrahim (علیہ السلام) is mentioned 13 times.
• The verse 183 describes the obligation of fasting (soam).
• Surah Aal-e-Imran is the second longest surah of Holy Quran.
• Surah Al-Kausar is the shortest surah of Holy Quran.

Last verified on 30-03-2026

Explanation

• The hottest planet in our solar system is Venus.

Additional information:

• The black planet is called Venus.
• The second-closest planet to the Sun is Venus.
• Slowest Rotating Planet
• No moon
• Similar in size to Earth

Last verified on 30-03-2026

Explanation

The currency of Japan is the yen.

Japan is an island country in East Asia.

Japan is situated in the northwest Pacific Ocean.

The capital of Japan is Tokyo.

The largest city in Japan is Tokyo.

Japan is a part of the Ring of Fire.

The official language is Japanese.

Japan is the eleventh most populous country in the world.

Japan is located on the continent of Asia.

Japan's primary religions are Buddhism and Shinto, but it is a secular country.

Japan's head of government is Prime Minister Fumio Kishida.

Japan's parliament is called the Diet.

Last verified on 17-03-2026

Explanation

• The ozone layer acts as Earth’s natural sunscreen, protecting life from the sun’s harmful ultraviolet (UV) radiation.
• UV radiation can cause skin cancer, eye damage, and harm to plants and animals.

Additional information:

• Chemical Formula: O₃ (three oxygen atoms)
• Layer Location: Stratosphere, 15–40 km above Earth
• Function: Absorbs UV-B and UV-C rays from the Sun
• Depletion Causes: Air pollution, CFCs, industrial chemicals
• Protection Measures: Reduce CFC use, ozone-friendly products

Last verified on 09-03-2026

Explanation

Explanation

Step 1: Let's denote the two numbers as x and y.
We have two equations:

1. x + y = 28

2. x - y = 4

Step 2: Solve the system of equations.
Adding the two equations eliminates y:
(x + y) + (x - y) = 28 + 4
2x = 32
Step 3: Solve for x.
x = 32 / 2
x = 16
Step 4: Solve for y.
Substitute x into one of the original equations:
16 + y = 28
y = 28 - 16
y = 12
Step 5: Identify the correct pair of numbers.
The numbers are 16 and 12.

Explanation

Vitamin D deficiency can cause Rickets, a disease characterized by:

• Soft and weak bones
• Skeletal deformities
• Stunted growth
• Increased risk of fractures

Explanation

The charges of Proton, Electron, Neutron respectively are:

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