Explanation

• Nicolaus Copernicus is called the Father of Modern Astronomy.
• He introduced the heliocentric theory in 1543.
• This theory stated that the Sun is at the center of the solar system.
• His ideas changed the old belief that Earth is the center.

Additional information:

• Galileo Galilei, a later figure, is often called the "father of observational astronomy".

Last verified on 01-06-2026

Explanation

• The largest planet in our solar system is Jupiter.
• 5th planet
• 79 known moons (Maximum number of moons)
• The Great Red Spot is a prominent feature
• Giant planet and the fastest-rotating planet 
• Rotates approximately once every 10 hours.
• Age is about 4.603 billion years.

Additional information

• Mercury is the smallest planet of the solar system.

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Last updated 07-09-2026 by NA

Explanation

• General Tikka Khan became the first COAS of Pakistan Army.
• In 1972, the title changed from C-in-C to Chief of Army Staff (COAS).
• The first Commander-in-Chief (C-in-C) was Sir Frank Messervy.
• Later, General Ayub Khan became the first Muslim C-in-C of Pakistan Army.

Additional information:

Explanation

• In the standard MS Word Font Size toolbar list, sizes range from 8 to 72.
• These are the default preset font sizes shown in the dropdown menu.
• However, Word manually supports font sizes from 1 to 1638.
• Shortcut to change font size: Ctrl + Shift + P.
• Font size is measured in points (pt).

Last verified on 29-05-2026

Explanation

• A yard and an inch are both units of measurement (length), where inch is a smaller unit.
• Similarly, a quart and an ounce are units of measurement (volume), where ounce is a smaller unit.
• So, the relationship is larger unit → smaller unit.

Last verified on 26-05-2026

Explanation

• Vitamin D is essential for healthy bones.
• Its deficiency leads to Rickets in children and Osteomalacia in adults.
• Sunlight is the best natural source of Vitamin D.

Additional information:

Deficiency effects:

• Bone pain
• Weak bones
• Skeletal deformities

Other Vitamin Deficiencies:

• Vitamin A: Night blindness
• Vitamin C: Scurvy
• Vitamin B7 (Biotin): Hair fall

Last verified on 17-01-2026

Explanation

Explanation

• The Nobel Prize was first awarded in 1901
• Inaugurated on December 10, 1901
• Awarded in Stockholm, Sweden.
• Inventor of dynamite, Alfred Nobel

Additional information

Since 1901, the Nobel Prize has been awarded in the fields of

1. Physics
2. Chemistry
3.  Physiology/Medicine
4.  Literature
5.  Peace
6.  Economics.

Last updated question by NA on 07 May 2026

Explanation

• “Since” is used to show the starting point of an action in time.
• In Present Perfect Continuous tense, “since” is used with a specific year or date.
• The sentence shows an action continuing from 1999 until now.

Last verified on 12-05-2026

Explanation

• The correct preposition with “jealous” is “of”.
• We say “jealous of someone/something” in standard English.
• Example: He is jealous of her success.

Last verified on 15-05-2026