PSC Previous Years GS Questions Part 18

PSC Previous Years GS Question Bank

426. The study of sound?
A) Accoustics
B) Optics
C) Otology
D) None of these
Correct Option : A

427. The device used to measure the depth of oceans using sound waves?
A) Radar
B) Sonometer
C) Sonar
D) Vernier
Correct Option : C

428. In which one of the following medium sound has maximum speed?
A) Vacuum
B) liquid
C) Gas
D) Solid
Correct Option : D

429. Vinegar is acidic in nature because of the presence of:
A) Citric acid
B) Acetic acid
C) Hydrochloric acid
D) Tartaric acid
Correct Option : B

430. Which of the following diseases is not a viral disease
A) Influenza
B) Measles
C) Measles
D) Small Pox
Correct Option : C

431. Isotopes of an element contain the same number of
A) Neutrons and Protons
B) Neutrons and Protons but different number of elements
C) Protons but different number of Neutrons
D) Neutrons and Electrons but different number of protons
Correct Option : C

432. The genetic material of a cell is in
A) DNA
B) Protoplasm
C) Cytoplasm
D) Ribosome
Correct Option : A

433. The alloy of steel used in making automobile part is
A) Stainless steel
B) Nickel steel
C) Tungsten steel
D) Chromium steel
Correct Option : D

434. A device used to detect heat radiation is known as
A) Barometer
B) Thermocouple
C) Thermopile
D) Thermolelectric generator
Correct Option : B

435. A form of carbon used in Gas masks?
A) Activated Charcoal
B) Vine Charcoal
C) Sugar Charcoal
D) Lamp Black
Correct Option : A

436. Who is the father of Hydrogen Bomb
A) Raja Ramanna
B) Edward Teller
C) Benjamin Franklin
D) Robert Oppenheimer
Correct Option : B

437. Estimation of halogens in organic compound is done by
A) Dumas method
B) Messenger’s method
C) Carius method
D) Kjeldahl’s method
Correct Option : C

438. Which is the function of the white blood corpuscles
A) To produce anti-toxin
B) To carry excretory material
C) To carry oxygen
D) To carry microbes that cause disease
Correct Option : A

439. The projector in a film theatre works on the principle of
A) Dispersion
B) Interference
C) Defraction
D) Refraction
Correct Option : C


440. Chemical name of `White Vitriol` is
A) Copper Sulphate
B) Zinc Sulphate
C) Potassium Nitrate
D) Ferrous Sulphate
Correct Option : B


441. Which mirror is used search light
A) concave mirror
B) convex mirror
C) Bi-focal mirror
D) Bi-convex mirror
Correct Option : A


442. Who discovered safety lamp
A) Murray Gell mann
B) Michael Faraday
C) Leo Lederman
D) Humphry Davy
Correct Option : D


443. The manufacturing process of Aluminium
A) Dow Process
B) Hall Heroult Process
C) Cyanide Process
D) Contact Process
Correct Option : B


444. Which of the following is a water soluble Vitamin
A) Calciferol
B) Tocopherol
C) . Ascorbic acid
D) Phylloquinone
Correct Option : C


445 . Horse Shoe shaped bone in ear is ..........
A) malleus
B) incus
C) stapes
D) masseter
Correct Option : C


446. Which organ maintain the balance of the body
A) Ear
B) Lungs
C) Brain
D) Heart
Correct Option : A


447. The disease caused by a Protozoa
A) AIDS
B) Chicken Gunia
C) Thyphoid
D) Malaria
Correct Option : D


448. Which hormone helps to accelerate the cell division
A) Cytokinin
B) Auxin
C) Ethylene
D) Gibberllins
Correct Option : A

449. The shape of acceleration versus mass graph for constant force is:
A) Parabola
B) Hyperbola
C) Straight lin
D) Ellipse
Correct Option : B


450. The tank appears shallow than its actual depth, due to:
A) Reflection
B) Refraction
C) Diffraction
D) Interference
Correct Option : B


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