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Chemistry Online Mock Test
1. Exposure to mixture of chemicals are greater than expected on the basis of effects of exposure to each chemical individually this is known as
Synergism- Synergism
2. Ozone layer in the upper part of the atmosphere serves as a protective Shield against harmful
Solar ultraviolet radiation- Solar ultraviolet radiation
3. Which of the following is blonde gradable
Paper- Paper
4. Hardness of water is commonly measured in terms of
Calcium carbonate equivalent- Calcium carbonate equivalent
5. If the sewage is fully oxidize the nitrogen is in the form of
Nitrates- Nitrates
6. Acid rain is caused by
SO2 and NO2- SO2 and NO2
7. Dissect a response produced by two or more Chemicals are less than the sum of effects or response that the chemical wood produced individually is known as
Antagonism- Antagonism
8. Acid rain is due to pollution of atmosphere by
Oxides of nitrogen and sulphur- Oxides of nitrogen and sulphur
9. The enormous amount of energy released in an explosion of an anatomic bomb is due to the
Conversion of neutrons into protons- Conversion of neutrons into protons
10. The important metal used with iron to produced stainless steel is
Chromium- Chromium
11. Iodine value is used to estimate
Unsaturation in oil- Unsaturation in oil
12. Sulphur Dioxide level in atmosphere can be reduced by using
Low sulphur fuels- Low sulphur fuels
13. Heavy water is so called because it contains
Heavy isotope of hydrogen- Heavy isotope of hydrogen
14. Which one of the following does not contain silver
German Silver- German Silver
15. Which one of the following is a Greenhouse gas
Carbon dioxide- Carbon dioxide
16. Which of the following is caused by the higher concentrations of nitrogen and phosphorus
Eutrophication- Eutrophication
17. It's a very bad the main constituent present is
Aluminium powder- Aluminium powder
18. Brass gets discoloured in air due to constant exposure in presence of
Hydrogen sulphide- Hydrogen sulphide
19. The percentage of Nitrogen present in Ammonium Sulphate is
27%- 27%
20. In a period from li to f ionisation potential
Cannot be predicted- Cannot be predicted
21. Electric fuse is an alloy of
Tin and lead- Tin and lead
22. Choose the incorrect statement pertaining to organic compound
They are not easily combustible- They are not easily combustible
23. Which metal is the heaviest in periodic table among the following
OS- OS
24. The antiseptic compound present in Dettol is
Enloroxylenol- Enloroxylenol
Semiconductor- Semiconductor
26. Neutrons are slowed down in a nuclear reactor by
Moderator- Moderator
27. The percentage of oxygen in air is approximately
21%- 21%
28. Coating of solid waste with impervious material is known as
Encapsulation- Encapsulation
29. A mixture of water and alcohol can be separated by
Distillation- Distillation
30. The value of avogadro number is
6.023×10(23)- 6.023×10(23)
31. Maximum permissible concentration of total hardness to drinking water is
200- 200
32. Which one out of the following help in burning
Oxygen- Oxygen
33. Which one of the following does not form oxyacid
Fluorine- Fluorine
34. The polymer obtained by condensation of hexamethylene diamine and adipic acid is
Nylon 66- Nylon 66
35. The greenhouse effect is produced due to the presence of excess amount of
Methane- Methane
Nitrous oxide- Nitrous oxide
37. Synthetic detergents are made from
Sodium salt of benzene sulphonic acid- Sodium salt of benzene sulphonic acid
38. Chloroform can be used as
Anaesthetic- Anaesthetic
39. The chemical formula of the laughing gas is
N2O- N2O
40. Radioactive elements EMIT
A b and Y radiations- A b and Y radiations
41. The filter over which sewage is sprinkled is called as
Trickling filter- Trickling filter
42. When a metal is heated in flame the electrons absorb energy and jump to higher energy state on coming back to the lower energy state Dell EMIT light which can observe in
Emission spectra- Emission spectra
43. The oxidation number of Nickel in k4 is
Zero- Zero
45. Surface water is a better source of drinking water because it is poor
Arsenic- Arsenic
46. Water cycle refers to
An integrated attempt to recycle water in relatively arid region- An integrated attempt to recycle water in relatively arid region
47. The hottest parts of the gas flame is known as
Luminous zone- Luminous zone
48. Silicon is a polymer of
Dialkyl dichloro silane- Dialkyl dichloro silane
49. Threshold limit value of copper in the atmospheric air is
1.0 MG / M3- 1.0 MG / M3
50. Nitrogen is an essential constituent of all
Proteins- Proteins
51. A colloidal system in which liquid is dispersed in a liquid is called
Emulsion- Emulsion
52. Stains Of Rust on clothes can be removed by
Oxalic acid- Oxalic acid
53. The unit of measure the flow of water
Cusecs- Cusecs
54. The used in developing photographic films is
Silver bromide- Silver bromide
56. Ferrous sulphate is used in water treatment as a
Coagulant aid- Coagulant aid
57. The fat of a common muscle secrets stickley glue that can be used to make heart implants the unique chemical compound present in blue is
Dihydroxy phenyl alanine- Dihydroxy phenyl alanine
58. Benzene cannot undergo
Elimination- Elimination
59. Which if the following metals is used in space crafts to withstand high temperature
Ti- Ti
60. An element of atomic number 29 belongs to
D block- D block
Alkaline potassium permanganate- Alkaline potassium permanganate
62. Which among the following is found in chlorophyll
Mg2+- Mg2+
63. Which is the natural colloid
Blood- Blood
64. Ethanol containing 5% water is known as
Rectified spirit- Rectified spirit
65. When The Lead Storage battery is discharge
Sulphuric acid is consumed- Sulphuric acid is consumed
66. In its reaction with silver nitrate C2 H2 shows
Acidic property- Acidic property
67. Bhopal gas tragedy 1984 is related to
Methyl isocyanate- Methyl isocyanate
68. An element that does not occur in nature but can be produced artificially is
Plutonium- Plutonium
69. The lightest radioactive element is
Tritium- Tritium
70. The name of unreactive gas is
Nitrogen- Nitrogen
71. Inorganic compounds nitrogen is estimated by
Dumas method method- Dumas method method
72. The sewage obtained from Water closets and urinals is known as
Sanitary waste- Sanitary waste
73. Which one of the following is a method of disposing of solid waste which cannot be reused are recycled
All of these- All of these
74. The manufacture of iron from iron ore involves the process of
Reduction- Reduction
75. The Chemical used for cloud seeding for artificial rain
Silver iodide- Silver iodide
76. The main source of carbon monoxide is
Transportation- Transportation
77. The orientation of an atom orbital is governed by
Magnetic quantum numbers- Magnetic quantum numbers
78. Which of the following is colourless
Oxygen- Oxygen
79. The liquid waste from kitchen and bath of residence is known as
Sullage- Sullage
80. The two metals ions that cause hardness to water are
Magnesium calcium- Magnesium calcium
81. Which among the following is liquid non metal
Bromine- Bromine
82. Earth's atmosphere is an envelope of gases extendeding to a hight of
200 km- 200 km
83. The rusting of iron is a
Electrochemical change- Electrochemical change
84. The presence of Cobalt in vitamin B12 established for the first time by
Spectroscopy- Spectroscopy
85. Which one of the following has greatest mass
Neutron- Neutron
86. Hard water and soft water can be distinguished by using
Detergent- Detergent
Suspended solids particles in air- Suspended solids particles in air
88. The nuclear particle having no mass and no charge but only Spin is
Neutrino- Neutrino
89. When arsenic atoms are added to Germanium lattice it becomes a
Extrinsic semiconductor- Extrinsic semiconductor
90. Which of the following metals can deposit copper from copper sulphate solution
Iron- Iron
91. Piped natural gas is used for
Cooking- Cooking
92. Which among the following is used as a catalyst in the production of high octane fuels
H2 SO4- H2 SO4
93. The weight of 6.023×10(22) atoms of carbon is
12 grams- 12 grams
94. What is the second largest components in milk
Fat- Fat
95. Elements 106 was discovered by
Seaborg- Seaborg
96. Suspension particles have the size between
10(-2) and 10(-4)- 10(-2) and 10(-4)
97. Which among the following is used to dilute oxygen in the gas cylinder used by divers
Helium- Helium
98. Rutherford's scattering experiment proved the presence of
Nucleus in atoms- Nucleus in atoms
99. Ultraviolet rays can be used in water treatment
Disinfectant- Disinfectant
100. The hottest part of gas flame is known as
Luminous zone- Luminous zone
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