HSSC HARYANA POLICE (FEMALE) EXAM

31. Who was the inventor of Vaccine?

(1) Jonas sack
(2) Elb.E. Sebin
(3) Selman Waksman
(4) None

Correct Answer: (1) Jonas sack

Solution:Polio vaccine was invented by Jonas Salk.

32. Eating Salt is

(1) Sodium Chloride
(2) Sodium Carbonate
(3) Potassium Carbonate
(4) Potassium Chloride

Correct Answer: (1) Sodium Chloride

Solution:The chemical name of eating salt is sodium chloride (NaCl).

33. Who established the relationship between mass and energy?

(1) Plank
(2) Einstein
(3) Dalton
(4) Rutherford

Correct Answer: (2) Einstein

Solution:Great Physicist Albert Einstein established the relationship between mass and energy. He famous for his theory e = mc2.

34. Who is called the Missile man of India?

(1) Arjun Singh
(2) Dr. A.P.J Abdul Kalam
(3) Dr. C. V. Raman
(4) H.J. Bhabha

Correct Answer: (2) Dr. A.P.J Abdul Kalam

Solution:Dr. A.P.J. Abdul Kalam is called the Missile man of India. He was awarded 'Bharat Ratna' in 1997. He was the 11th president of India

35. Who was the first President of the Indian Atomic Energy Commission.

(1) Dr. Raja Mishra
(2) Dr. M.G.K. Menon
(3) Dr. H.J. Bhabha
(4) Dr. Satish Dhawan

Correct Answer: (3) Dr. H.J. Bhabha

Solution:Dr. H.J Bhabha was the First chairman of Atomic energy commission.

36. Where is National Chemical laboratory located?

(1) New Delhi
(2) Mumbai
(3) Kolkata
(4) Pune

Correct Answer: (4) Pune

Solution:National chemical laboratory is situated in Pune.

37. For the prevention of which disease the vaccine of BCG should be taken ?

(1) Aids
(2) Polio
(3) Cancer
(4) Tuberculosis

Correct Answer: (4) Tuberculosis

Solution:Vaccine of B.C.G should be taken for the prevention of Tuberculosis.

38. Laughing gas is

(1) Carbon dioxide
(2) Nitrous Oxide
(3) Sulphur dioxide
(4) Carbon monoxide

Correct Answer: (2) Nitrous Oxide

Solution:Nitrous oxide (N₂O) is also called laughing gas. It was discovered by pristly.

39. Universal Donor blood group is:

(1) A
(2) AB
(3) Ο
(4) B

Correct Answer: (3) Ο

Solution:O blood group is called universal donor. because there is no antigen in this blood group.

40. Which instrument is used to see the surface of the sea or the surface of the ground from inside the submarine.

(1) Periscope
(2) Sextant
(3) Stereoscope
(4) Telescope

Correct Answer: (1) Periscope

Solution:Periscope is a type of instrument through which the observer can observe the environment around him even while hiding.