Science – WB Police SI Previous Year Question Paper
Contents
Science – WB Police SI Previous Year Question Paper
WB Police SI Question Paper – 2021
1. The process of cell division in Amoeba is termed as
(A) Mycosis
(B) Amitosis
(C) Mitosis
(D) Meiosis
9. Torr is the unit of
(A) Momentum
(B) Pressure
(C) Work
(D) Force
10. Which of the following is not a bacteria related disease?
(A) Pneumonia
(B) Typhoid
(C) Influenza
(D) Diphtheria
12. Which of the following is known as Mixed gland?
(A) Liver
(B) Thyroid
(C) Pancreas
(D) Pituitary
15. If height of Mercury in a Barometer decreases rapidly it denotes
(A) chances of Sunny weather
(B) chances of storm
(C) chances of clean weather
(D) chances of rain
20. Which of the following is a browser to access Dark Web?
(A) ios
(B) Google Chrome
(C) Tor
(D) Linux
33. In human body blood does not clot in
(A) Capillary
(B) Artery
(C) Brain
(D) Vein
40. Using duplicate application to collect user password is called
(A) Stalking
(B) Bullying
(C) E-bombing
(D) Phishing
50. What is ‘Fire Ice’?
(A) Propene Hydrate
(B) Methane Hydrate
(C) Methylene Hydrate
(D) Ethane Hydrate
94. Which temperature in Celsius scale represents Absolute Zero Temperature?
(A) -237.15°C
(B) -273.15°C
(C) -373.15°C
(D) 0°C
WB Police SI Question Paper – 2019
1. What does one study in Palaeontology?
(A) Plant and Animal Fossils
(B) Volcanoes
(C) Atmosphere
(D) Rocks
2. Newton’s first law of motion is also known as
(A) constancy principle
(B) principle of relativity
(C) causality principle
(D) principle of inertia
6. Diamond is hard because
(A) it is made up of carbon atoms.
(B) all the four valence electrons are bonded to each carbon atom by covalent bonds.
(C) it cannot be burnt.
(D) it is a giant molecule.
9. The Law of Natural Selection is associated with
(A) Darwin
(B) Mendel
(C) Dalton
(D) J. B. S. Halden
10. Which of the following is needed by a person suffering from diabetes?
(A) Penicillin
(B) Streptomycin
(C) Insulin
(D) Steroids
11. The chief constituent of ‘Gobar Gas‘ is
(A) Carbon dioxide
(B) Methane
(C) Ethane
(D) Hydrogen
41. Which one of the following units is not a unit of electrical measurement?
(A) Coulomb
(B) Siemen
(C) Angstrom
(D) Ohm
44. Cow milk is a rich source of
(A) Vitamin-B
(B) Vitamin-D
(C) Vitamin-A
(D) Vitamin-C
48. Which one of the following is an example of nitrogen fixing bacteria?
(A) Eukaryotic
(B) Rhizobium
(C) Azotobacter
(D) Procaryotic
49. The pigment that helps in photosynthesis
(A) Chromatophore
(B) Leucoplasts
(C) Chloroplasts
(D) Chromatoplasts
51. Which of the following is a vector quantity?
(A) Force
(B) Mass
(C) Density
(D) Inertia
54. Exposure to sunlight helps a person improve his health because
(A) resistance power increases.
(B) the ultraviolet rays convert skin oil into vitamin-D
(C) the Infra-red light kills bacteria in the body.
(D) the pigment cells in the skin get stimulated and produce a healthy tan.
73. The sun gets its energy from which of the following?
(A) Nuclear Fission
(B) Photoelectric effect
(C) Chemical Reaction
(D) Nuclear Fusion
74. ‘Athelete’s foot‘, is a disease caused by
(A) Fungi
(B) Protozoa
(C) Bacteria
(D) Nematode
75. The velocity of sound in air (under normal condition) is
(A) 332 m/sec
(B) 3320 m/sec
(C) 30 m/sec
(D) 3200 m/sec
76. The working of a Rocket is based on the principle of
(A) Kepler’s Law
(B) Pascal’s Law
(C) Boyle’s Law
(D) Newton’s Law
77. Which one of the elements is least likely to be found in commercial fertilizers?
(A) Phosphorus
(B) Silicon
(C) Nitrogen
(D) Potassium
78. Which of the following has the highest density?
(A) Coke
(B) Graphite
(C) Charcoal
(D) Diamond
95. All of the following noble gases are present in the atmosphere, except
(A) Helium
(B) Xenon
(C) Argon
(D) Radon
100. Which of the following is not a particle?
(A) Beta
(B) Gamma
(C) Alpha
(D) Delta
WB Police SI Question Paper – 2018
1. Which of the following waves is used for telecommunication?
(A) Microwaves
(B) Ultraviolet rays
(C) Infra-red rays
(D) X-rays
2. ‘Fear of heights’ is termed as :-
(A) Acrophobia
(B) Anglophobia
(C) Ergophobia
(D) Agoraphobia
22. The type of mirror used in the head lamps of cars is the :-
(A) spherical concave mirror
(B) spherical convex mirror
(C) plane mirror
(D) parabolic concave mirror
27. The subject relating to studies of Fossils is :-
(A) Petrology
(B) Paleontology
(C) Paleobotany
(D) Archaeology
52. The science dealing with the study of phenomena at very low temperature is known as:-
(A) Frozenics
(B) Cytogenetics
(C) Refigenics
(D) Cryogenics
53. Insects responsible for transmitting diseases are called :-
(A) Vector
(B) Drones
(C) Transmitter
(D) Conductor
59. Which instrument is used to measure depth of ocean?
(A) Chronometer
(B) Odometer
(C) Galvanometer
(D) Fathometer
60. The human skull is made up of _____ number of bones.
(A) 26
(B) 14
(C) 22
(D) 15
81. Who discovered the Polio Vaccine?
(A) Konrad Zuse
(B) Jonas Salk
(C) Louis Pasteur
(D) Eli Whitney