Daily GK Challenge

More practice: Science & Technology GK

5 more SSC CGL questions from the same chapter, with step-by-step solutions. Try each one, then reveal the answer.

1. Q1easy

   Which vitamin is produced in the skin on exposure to sunlight?

   • AVitamin A
   • BVitamin B
   • CVitamin D
   • DVitamin K
   Show answer & solution

   Correct answer: (C) Vitamin D

   Vitamin D is synthesised in the skin when exposed to UV-B radiation from sunlight.

2. Q2easy

   Newton's first law is also known as the law of:

   • AGravitation
   • BInertia
   • CAcceleration
   • DMomentum
   Show answer & solution

   Correct answer: (B) Inertia

   Newton's First Law = Law of Inertia (a body remains at rest or uniform motion unless acted upon by a force).

3. Q3medium

   ISRO was established in:

   • A1962
   • B1969
   • C1975
   • D1980
   Show answer & solution

   Correct answer: (B) 1969

   The Indian Space Research Organisation was established on 15 August 1969.

4. Q4medium

   The pH of blood in a healthy human is approximately:

   • A5.5
   • B7.0
   • C7.4
   • D8.0
   Show answer & solution

   Correct answer: (C) 7.4

   Normal human blood pH is slightly alkaline, ranging from 7.35 to 7.45.

5. Q5easy

   Which blood group is known as the universal donor?

   • AAB positive
   • BA positive
   • CO negative
   • DB negative
   Show answer & solution

   Correct answer: (C) O negative

   O negative red cells carry no A, B or Rh(D) antigens, so the recipient's antibodies do not attack them. That lets them be given to people of any blood group. AB positive is the universal recipient, because it has all three antigens. So the universal donor is O negative.