J&K Sub Inspector Post Important Questions of General Science Download Here
1. An object will continue to accelerate until the resultant force:
A. Becomes zero
B. Is increased continuously
C. Begins to decrease
D. Changes the direction of velocity
Answer: A - Becomes zero
2. What is the momentum of an object of mass m, moving with a velocity v?
A. (mv)2
B. mv2
C. ½ mv2
D. mv
Answer: D - mv
3. According to second law of motion “the rate of change of momentum is directly proportional to
……………… applied”
A. Pressure
B. Force
C. Acceleration
D. Torque
Answer: B - Force
4. Rocket works on the principle of conservation of:
A. Mass
B. Energy
C. Momentum
D. Velocity
Answer: C - Momentum
5. The inertia of an object tends to cause the object:
A. to increase its speed
B. to decrease its speed
C. to resist any change in its state of motion
D. to decelerate due to friction
Answer: C - to resist any change in its state of motion
6. According to the third law of motion, action and reaction:
A.always act on the same body
B. always act on different bodies in opposite directions
C. have same magnitude and directions
D. act on either body at normal to each other
Answer: B. always act on different bodies in opposite directions
7. When a body falls freely towards the earth, then its total energy
A. increases
B. decreases
C. remains constant
D. first increases and then decreases
Answer: C - Remains constant
8. Which one of the following is not the unit of energy?
A. joule
B. newton metre
C. kilowatt
D. kilowatt hour
Answer: C - Kilowatt
9. The work done on an object does not depend upon the
A. displacement
B. force applied
C. angle between force and displacement
D. initial velocity of the object
Answer: D- initial velocity of the object
10. Water stored in a dam possesses:
A. no energy
B. electrical energy
C. kinetic energy
D. potential energy
Answer: D - Potential energy
11. The numerical ratio of displacement to distance for a moving object is:
A. always less than 1
B. always equal to 1
C. always more than 1
D. equal or less than 1
Answer: D - equal or less than 1
12. If the displacement of an object is proportional to square of time, then the object moves with
A. uniform velocity
B. uniform acceleration
C. increasing acceleration
D. decreasing acceleration
Answer: B - Uniform acceleration
13. In which of the following cases of motions, the distance moved, and the magnitude of
displacement are equal?
A. If the car is moving on straight road
B. If the car is moving in circular path
C. The pendulum is moving to and fro
D. The earth is revolving around the Sun
Answer: B - If the car is moving in circular path
14. The resistivity does not change if:
A. the material is changed
B. the temperature is changed
C. the shape of the resistor is changed
D. both material and temperature are changed
Answer: C - the shape of the resistor is changed
15.Loudness of sound is determined by:
A. Pitch
B. Frequency
C. Amplitude
D.Time period
Answer: C – Amplitude
16. How many SI units are there?
A. 5
B. 6
C. 7
D. 8
Answer: C -7
17. What is the unit of specific resistance?
A. Ohm -1
B. Ohm-m
C. Ohm -1 m -1
D. Ohm-m2
Answer: B-Ohm-m
18. What is the unit of length used to measure the wavelength of light?
A. Fermi
B. Angstrom
C. Parsec
D. Barn
Answer: B – Angstrom
19. Unit of electric power may also be expressed as
A. volt ampere
B. kilowatt hour
C. watt second
D. joule second
Answer: C – Volt ampere
20. When waves travel, they transmit __________ from one place to another.
A. Energy
B. Mass
C. Both
D. None
Answer: A. Energy
21. The particles of a medium vibrate in longitudinal waves _________
A. Perpendicular to the direction of the wave motion
B. Along the direction of wave motion
C. Opposite to the direction of the wave motion
D. Do not vibrate at all
Answer: B - Along the direction of wave motion
22. Which of the following organisms produces biogas from cow drug sherry in the biogas plant?
A. Aerobic bacteria
B. Anaerobic bacteria
C. Protozoa
D. Fungi
Answer: B- Anaerobic bacteria
23. What are the disadvantages of solar energy?
A large surface area is required collect the solar
B. Daily average of solar energy highly varies from 4 to 7 kwh/m2
C. Hazardous materials are used in the manufacturing of solar devices
D. All of the above
Answer: D - All of the above
24. In a hydropower plant,
A. Electricity is extracted from water
B. Potential energy possessed by stored water is converted into electricity
C. Kinetic energy possessed by stored water is converted into potential energy
D. Water is converted into steam to produce electricity.
Answer: B - Potential energy possessed by stored water is converted into electricity
25. Ocean thermal energy is due to:
A. Energy stored by waves in the ocean
B. Temperature difference at different levels in the ocean
C. Pressure difference at different levels in the ocean
D. Tides arising out in the ocean
Answer: B -Temperature difference at different levels in the ocean
26. A resonating column of air contains:
A. Stationary longitudinal waves
B. Stationary transverse waves
C. Transverse progressive waves
D. Longitudinal progressive waves
Answer: A - Stationary longitudinal waves
27. The relationship between current, voltage and resistance are known as __________ law.
A. Newton's
B. Ohm's
C. Coulomb's
D. Faraday’s law
Answer: B - Ohm's
28. If current increases then voltage ________.
A. Increases
B. Decreases
C. Remains stable
D. None of the above
Answer: A - Increases
29. The resistivity does not change if:
A. the material is changed
B. the temperature is changed
C. the shape of the resistor is changed
D. both material and temperature are changed
Answer: C - the shape of the resistor is changed
30. The major problem in harnessing nuclear energy is how to
A. Split nuclei
B. Sustain the reaction
C. Dispose of spent fuel safely
D. Convert nuclear energy into electrical energy
Answer: C - dispose of spent fuel safely
CHEMISTRY
31. What happens when a copper rod is dipped in iron sulphate solution?
A. No reaction takes place
B. Blue color of copper sulphate solution is obtained
C. Copper displaces iron
D. Reaction is exothermic
Answer: A - No reaction takes place
32. Combination of phosphorus and oxygen is an example of:
A. Oxidation
B. Reduction
C. Rancidity
D. None of these
Answer: A – Oxidation
33. _________ elements are non-metal.
A. Electro-positive
B. Electro-negative
C. Neutral
D. None of these
Answer: B - Electro-negative
34. The Chemical name of ‘Washing Soda’ is ______.
A. Sodium bicarbonate
B. Sodium oxide
C. Sodium carbonate
D. Sodium hydroxyl
Answer: C - Sodium carbonate
35. The composition of Aspirin is:
A. Diacetylsalicyclic acid
B. Acetylsalicyclic acid
C. Triacetyldisalicyclic acid
D. Acetyldisalicyclic acid
Answer: B- Acetylsalicyclic acid
36. What is the chemical name of Plaster of Paris?
A. Calcium oxide
B. Calcium sulphate
C. Calcium dioxide
D. Calcium nitrate
Answer: B - Calcium sulphate
37. In an oxidation process _________ happens.
A. Gain of electrons
B. Loss of electrons
C. No change in electrons
D. Gain or loss of electrons
Answer: B - Loss of electrons
38. Aluminium is extracted from which ore?
A. Magnetite
B. Bauxite
C. Siderite
D. Haematite
Answer: B – Bauxite
39. Which of the following pairs will give dis-placement reactions?
A. FeSO4 solution and copper metal
B. AgNO3 solution and copper metal
C. CuSO4 solution and silver metal
D. NaCl solution and copper metal
Answer: B - AgNO3 solution and copper metal
40. If the dispersed phase is a liquid and the dispersion medium is solid, the colloid is known as
A. Foam
B. Sol
C. Emulsion
D. Gel
Answer: D -Gel
41. When a catalyst is added to the system, the:
A. Equilibrium concentrations are increased
B. Equilibrium concentrations are unchanged
C. The rate of forward reaction is increased and that of backward reaction is decreases
D. Value of the equilibrium constant is decreased
Answer: B - Equilibrium concentrations are unchanged
42. Which of the following properties is generally not shown by metals?
A. Electrical conduction
B. Sonorous in nature
C. Dullness
D. Ductility
Answer: C- Dullness
43. The ability of metals to be drawn into thin wire is known as:
A. Ductility
B. Malleability
C. Sonorousity
D. Conductivity
Answer: A - Ductility
44. Which one of the following metals do not react with cold as well as hot water?
A. Na
B. Ca
C. Mg
D. Fe
Answer: D – Fe
45. Silver articles become black on prolonged exposure to air. This is due to the formation of:
A. Ag3N
B. Ag2O
C. Ag2S
D. Ag2S and Ag3N
Answer: C - Ag2S
46. Blood contains:
A.Positively charged particles
B. Negatively charged particles
C. Neutral particles
D. Negatively as well as positively charged particles
Answer: B - Negatively charged particles
47. In stainless steel, iron is mixed with
A. Ni and Cr
B. Cu and Cr
C. Ni and Cu
D. Cu and Au
Answer: A. Ni and Cr
48. Which one of the following metals is found in liquid state at room temperature?
A. Na
B. Fe
C. Cr
D. Hg
Answer: A - Na
49.Which of the following non-metal is lustrous?
A. Sulphur
B. Oxygen
C. Nitrogen
D. Iodine
Answer: D.- Iodine
50. Which among the following alloys contain non-metal as one of its constituents?
A. Brass
B. Bronze
C. Amalgam
D. Steel
Answer: D- Steel
51. Although metals form basic oxides, which of the following metals form an amphoteric oxide?
A. Na
B. Ca
C. Al
D. Cu
Answer: C - Al
52. Which of the following non-metals is a liquid?
A. Carbon
B. Bromine
C. Phosphorus
D. Sulphur
Answer: B - Bromine
53. Which of the following can undergo a chemical reaction?
A. MgSO4 + Fe
B. ZnSO4 + Fe
C. MgSO4 + Pb
D. CuSO4 + Fe
Answer: D - CuSO4 + Fe
54. Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases
liberated during electrolysis of water is
A. 1:1
B. 2:1
C. 4:1
D. 1:2
Answer: B - 2:1
55. Which of the following are exothermic processes?
(i) Reaction of water with quicklime
(ii) Dilution of an acid
iii) Evaporation of water
(iv) Sublimation of camphor (crystals)
A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iv)
D. (iii) and (iv)
Answer: A - (i) and (ii)
56. Which animal respire without having blood in them?
A. Mosquito
B. Hydra
C. Octopus
D. Barracuda
Answer: B - Hydra
57. Fungi is a _______.
A. Autotroph
B. Insectivore
C. Parasite
D. Saprophyte
Answer: D – Saprophyte
58. Pitcher plant is an example of
A. Autotroph
B. Heterotroph
C. Saprophyte
D. Partial heterotroph
Answer: D - Partial heterotroph
59. Which vertebrate has a two-chambered heart?
A. Fish
B. Snake
C. Blue Whale
D. Crocodile
Answer: A- Fish
60. The xylem in plants is responsible for:
A. Transport of oxygen
B. Transport of food
C. Transport of water
D. Transport of amino acids
Answer: C–Transport of water
61. Cuscuta is an example of:
A. Holoparasite
B. Homoparasite
C. Heteroparasite
D. Semiparasite
Answer: B – Holoparasite
62. The core metal of chlorophyll is:
A. Cu
B. Fe
C. Mg
D. Ni
Answer: C-Mg
63. Cell was discovered by ________.
A. Van Leeuwenhoek
B. Dmitri Ivanovsky
C. Robert Hooke
D. Edward Jenner
Answer: C - Robert Hooke
64. An attribute found in plants but not animals is:
A. Metabolism
B. Sexual reproduction
C. Autotrophy
D. Asexual reproduction
Answer: C - Autotrophy
65. In five- kingdom classification, unicellular green algae are included in the kingdom:
A. Metaphyta
B. Protista
C. Monera
D. Metazoa
Answer: B - Protista
66. Cell Theory was proposed by
A. Paul Erlich
B. Robert Koch
C. Schleiden and Schwann
D. Robert Hooke
Answer: C - Schleiden and Schwann
67. Five - Kingdom classification was given by:
A. Copeland
B. Grew
C. Marcello Malpighi
D. Whittaker R.H
Answer: D - Whittaker R.H
68. Which of the following organisms have a parasitic mode of nutrition?
A. Paramecium
B. Fish
C. Amoeba
D. Leech
Answer: D – Leech
69. Which of the following is a communicable disease?
A. Hypotension
B. Diabetes
C. Diphtheria
D. Tetanus
Answer: C- Diphtheria
70. The form of sugar transported through phloem is:
A. Glucose
B. Fructose
C. Sucrose
D. Ribose
Answer: C - Sucrose
71. Which one of the following will not directly affect transpiration?
A.Temperature
B. Light
C. Wind speed
D. Chlorophyll content of leaves
Answer: D - chlorophyll content of leaves
72. Water potential of pure water at standard temperature is equal to
A. 10
B. 20
C. Zero
D. None of the above
Answer: C - Zero
73. Phosphorylation of glucose during glycolysis is catalysed by
A. Phosphoglucomutase
B. Phosphoglucoisomerase
C. Hexokinase
D. Phosphorylase
Answer: C - Hexokinase
74. Which of the following exhibits the highest rate of respiration?
A. Growing shoot apex
B. Germinating seed
C. Root tip
D. Leaf bud
Answer: B - Germinating seed
75. The end product of oxidative phosphorylation is
A. NADH
B. Oxygen
C. ADP
D. ATP and water
Answer: D - ATP and water
76. Which pigment acts directly to convert light energy to chemical energy?
A. Chlorophyll a
B. Chlorophyll b
C. Xanthophyll
D. Carotenoid
Answer: A - Chlorophyll a
77. The disease chikunguniya is transmitted by:
A. House fly
B. Aedes mosquito
C. Cockroach
D. Female Anopheles
Answer: B - Aedes mosquito
78. Among the following, which one is not a mode of transmission of HIV?
A. Transfusion of contaminated blood
B. Sharing the infected needles
C. Shaking hands with infected persons
D. Sexual contact with infected persons
Answer: C - Shaking hands with infected persons
79.Which of the following is not a bacterial disease?
A. Tetanus
B. Typhoid
C. Tuberculosis
D. Meningitis
Answer: D - Meningitis
80. The clinical test that is used for diagnosis of typhoid is:
A. ELISA
B. ESR
C. PCR
D. Widal
Answer: D - Widal test
81. Which of the following is a viral disease?
A. Leprosy
B. Diphtheria
C. Influenza
D. Filariasis
Answer: C- Influenza
82. Water soluble vitamins are:
A. Vitamin A
B. Vitamin C
C. Vitamin E
D. Vitamin K
Answer: B - Vitamin C
83. Which vitamin helps the body to absorb calcium?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin E
Answer: D - Vitamin E
84. In a food chain, the third trophic level is always occupied by
A. carnivores
B. herbivores
C. decomposers
D. producers
Answer: A - carnivores
85. An ecosystem includes
A. all living organisms
B. non-living objects
C. both living organisms and non-living objects
D. sometimes living organisms and sometimes non-living objects
Answer: C- both living organisms and non-living objects
86. Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each
higher trophic level is known as:
A. eutrophication
B. pollution
C. biomagnification
D. accumulation
Answer: A - Eutrophication
87. Depletion of ozone is mainly due to:
A. chlorofluorocarbon compounds
B. carbon monoxide
C. methane
D. pesticides
Answer: A - chlorofluorocarbon compounds
88. Organisms which synthesise carbohydrates from inorganic compounds using radiant energy are
called:
A. Decomposers
B. Producers
C. Herbivores
D. Carnivores
Answer: B- Producers
89. In an ecosystem, the 10% of energy available for transfer from one trophic level to the next is
lost in the form of
A. Heat energy
B. Light energy
C. Chemical energy
D. Mechanical energy
Answer: A - Heat energy
90. Organisms of a higher trophic level which feed on several types of organisms belonging to a
lower trophic level constitute the:
A. Food web
B. Ecological pyramid
C. Ecosystem
D. Food chain
Answer: A - Food web
91. Flow of energy in an ecosystem is always
A. Unidirectional
B. Bidirectional
C. Multi directional
D. No specific direction
Answer: A - Unidirectional
92. Which of the following limits the number of trophic levels in a food chain?
A. Decrease in energy at higher trophic levels
B. Sufficient food supply
C. Polluted air
D. Water
Answer: A - Decrease in energy at higher trophic levels
93. The pH range most conducive for life of freshwater plants and animals is
A. 6.5 – 7.5
B. 2.0 – 3.5
C. 3.5 – 5.0
D. 9.0 – 10.5
Answer: A - 6.5 – 7.5
94. The three R’s that will help us to conserve natural resources for long term use are
A. recycle, regenerate, reuse
B. reduce, regenerate, reuse
C. reduce, reuse, redistribute
D. reduce, recycle, reuse
Answer: D - reduce, recycle, reuse
95. Dachigam National Park is associated with which of the following?
A. Musk deer
B. Golden oriole
C. Yellow-throated marten
D. Hangul or kashmir stag
Answer: D - Hangul or kashmir stag
96. Kaziranga national park is located in which state?
A. Assam
B. Meghalaya
C. Mizoram
D. Sikkim
Answer: A - Assam
97. Which of the following is spread over 3 states?
A. Dachigam national park
B. Balphakram national park
C. Kaziranga national park
D. Mudumalai wildlife sanctuary
Answer: D - Mudumalai wildlife sanctuary
98. World’s only floating national park?
A. Sundarban National park
B. Keibul Lamjao national park
C. Anshi National Park
D. Kazinag National Park
Answer: B - Keibul Lamjao national park
99. Measuring BOD is primarily used for:
A. Estimating the types of microbes
B. Determine the level of dissolved oxygen
C. Estimating the quantity of organic matter in sewage water
D. None of the above
Answer: C - Estimating the quantity of organic matter in sewage water
100. The green scum seen in the freshwater bodies is:
A. blue green algae
B. red algae
C. green algae
D. both (a) and (c)
Answer: D - both (a) and (c)
