Explanation

Maharaja Ranjit Singh was born in the Punjab region in 1780.

He founded the Sikh Empire, which was based primarily in Punjab.

Explanation

Hazrat Ismael (AS) is called Abu-ul-Arab (Father of the Arabs) because Arab tribes trace their lineage through him.

He settled in Makkah and married into the Jurhum tribe, giving rise to Arab ancestry.

Explanation

Self-discipline is the foundation of effective behavior and learning in a classroom.

When students and teachers both practice self-control, a positive and respectful classroom environment is maintained.

Explanation

Prime factors:

 • 36 = 2² × 3²

 • 54 = 2 × 3³

 • 360 = 2³ × 3² × 5

Common prime factors are 2 × 3² = 18.

Explanation

The preposition "at" is used to indicate a specific time.

So, "I will come at 2 o'clock" is grammatically correct.

Explanation

When two circles touch each other externally, they have a single point of contact.

The distance between their centers (C1C2) is equal to the sum of their radii (r1 + r2).

Explanation

Step 1: Add the two equations to eliminate y

(x + y) + (x - y) = 10 + 10

2x = 202x = 10

Step 2: Solve for x

x = 20/2x = 10

Explanation

According to the law of reflection, angle of incidence = angle of reflection.

So, if light strikes at 30°, it reflects at 30°.

Explanation

Deterioration means خراب ہونا

Improvement means بہتر ہو رہا ہے

Explanation

Speed of sound in air is proportional to the square root of absolute temperature v ∝ √T.

To double the speed, temperature must increase 4 times in Kelvin:

At 27°C = 300 K → 4 × 300 = 1200 K → 1200 - 273 = 927°C