Explanation

• Indian National Congress – headed by Bal Gangadhar Tilak
• All-India Muslim League – led by Muhammad Ali Jinnah

• Congress adopted the pact at Lucknow session on 29 December 1916.
• Muslim League approved it on 31 December 1916.

Last verified on 19-01-2026

Explanation

Metamorphic rocks are formed from pre-existing rocks (igneous, sedimentary, or older metamorphic rocks).

They are changed by high heat and/or pressure without melting.

Common examples include marble (from limestone) and gneiss (from granite).

The process is called metamorphism, meaning “change in form.”

Explanation

O negative (O⁻) blood group is called the universal donor.

It can be transfused to any blood group (A, B, AB, or O).

O⁻ lacks A, B, and Rh antigens, preventing immune reactions in recipients.

Explanation

Explanation

Herodotus is called the Father of History.

Additional information:

• Born: 484 BC, Halicarnassus (modern-day Bodrum, Turkey)
• Died: 425 BC, Thurii, Italy
• Famous Work: Histories – detailed accounts of Greco-Persian Wars
• Contribution: First to collect, verify, and narrate historical events systematically

Last verified on 18-01-2026

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

• Zakat was made compulsory in 2. A.H. 7-1/2 is the nasab of gold and 52-half tolas for silver.
• Injunction of utilization of zakat is in Surah-al Tauba.
• Zakāt or "alms giving", one of the five Pillars of Islam, is the giving 2.5% of one's possessions  to charity, normally to the terrible and needy.
  

Explanation

Explanation

• Year of nuclear test: 1974
  • Test name: Smiling Buddha
  • Date: 18 May 1974
  • Test site: Pokhran, Rajasthan
  • Country: India

Explanation

• Nature of Disease: Chronic and progressive
• Main Causes: Hepatitis B & C, alcohol abuse, fatty liver disease
• Effect: Scarring (fibrosis) reduces liver efficiency