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Chemistry Online Test
1. Which of the following can be found as pollutants in the drinking water in some part of india Select the correct answer using the code given below A
A, c and e- A, c and e
2. The soft silvery metallic element which ionizes easily when heated or exposed to light and is present in atomic clocks is
Cesium- Cesium
3. If there is 1 million MG ions in MgCl2 how many chloride ion in there
2 million- 2 million
4. The deterioration of a metal by an electrochemical process is commonly termed as
Corrosion- Corrosion
5. Concentration of a material which is lethal to 50% animal is called
Ld50- Ld50
6. An acid having basicity one is
Desodium hydrogen phosphate- Desodium hydrogen phosphate
7. Which one of the following has a maximum tendency to form M3 ion
N- N
8. Which one of the following is found in vinegar
Acetic acid- Acetic acid
9. Soldering of two metal is possible because of the property
Cohesion- Cohesion
10. Working of a dry cell is based on
Electrolysis- Electrolysis
11. When a bond is formed between two atoms the energy of the system
Remain the same- Remain the same
12. Which element behaves chemically both as metal and nonmetal
Boron- Boron
13. The common name of sodium bicarbonate is
Baking soda- Baking soda
14. Which one of the following vegetable oils is used in the manufacture of piants
Linseed oil- Linseed oil
15. The most suitable unit for expressing nuclear radius is
Angstrom- Angstrom
16. Soap helps in better cleaning of clothes because
It reduces the surface tension of solution- It reduces the surface tension of solution
17. Kinetics is the study of
All of these- All of these
18. Acid rain is caused due to pollution of atmosphere by
Oxides of Nitrogen and sulphur- Oxides of Nitrogen and sulphur
19. Which of the following Chemicals is responsible for depletion of Ozone layer in the atmosphere
Chlorofluorocarbons- Chlorofluorocarbons
20. Which one of the following element is an example of noble gas
Helium- Helium
21. Which one of the following is not coal variety
Dolomite- Dolomite
22. Any potent Greenhouse gas other than Ethane being produced from the agriculture field is
Nitrous oxide- Nitrous oxide
23. Which of the following elements is obtained from seaweeds
Iodine- Iodine
24. Nitrogen in water is commonly found in the form of
Nitrate- Nitrate
25. The gas that causes suffocation and death when Cola Coke is burnt in a closed room is
Carbon monoxide- Carbon monoxide
26. What do you understand by the term of espuma
Foam- Foam
27. An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called
Battery- Battery
Deuterium oxide- Deuterium oxide
29. Stalactites and stalagmites form due to the precipitation of
CaCo3- CaCo3
30. Which of the following is not a commercial source of energy
Firewood- Firewood
31. The most abundant metal in the earth's crust is
Aluminium- Aluminium
32. What is the common name for the substance which irritates lacrimal glands
Tear gas- Tear gas
33. Which of the following does the nucleus of an atom consists of
Protons and neutrons- Protons and neutrons
34. Atomic number of an atom gives the number of which of the following
Protons- Protons
35. At room temperature the metal that remains liquid is
Mercury- Mercury
36. Adding cl2 to benzene in the presence of AlCl3 is an example of
Substitution reaction- Substitution reaction
37. Live stone is a raw material used by which industry
Cement- Cement
38. Which of the following is not a gases air pollutant
Hydrocarbon- Hydrocarbon
39. Acid rain is caused by the pollution of environment by
Nitrous oxide and Sulphur dioxide- Nitrous oxide and Sulphur dioxide
40. The gas dissolved in water that makes it basic is
Ammonia- Ammonia
41. The strongest oxidizing agent among the following is
Fluorine- Fluorine
43. Iron fillings can be separated from a heterogeneous mixture using the technique of
Magnetization- Magnetization
44. Organic food is post to be better for human consumption because
It is grown without the use of Chemicals and synthetic pesticides- It is grown without the use of Chemicals and synthetic pesticides
45. Cyanide poisoning cause death in second because
It causes cardiac arrest- It causes cardiac arrest
46. Water gas is combination of
CO and H2- CO and H2
47. Aluminium salt commonly used to stop bleeding is
Aluminium Sulphate- Aluminium Sulphate
48. Which of the following is the main compound of voter ink
Silver Nitrate- Silver Nitrate
49. The most abundant element is
Nitrogen- Nitrogen
50. Heavy metal got their name because compared to other atoms they have
Higher atomic mass- Higher atomic mass
51. The amount of oxygen in the atmosphere remains relatively constant because it given off by
Plants- Plants
52. Which is the purest commercial form of iron
Wrought iron- Wrought iron
53. The main component of liquid bleach is
Sodium hypochlorite- Sodium hypochlorite
54. Ultra purification of a metal is done by
Zone melting- Zone melting
55. Atoms having the same number of proton but different number of neutrons are called
Isotopes- Isotopes
56. The most abundant element buy number in the living system is
Hydrogen- Hydrogen
57. Which method will be employed to be the hardness of water
Formation of lather with soap- Formation of lather with soap
58. JJ Thomson's proposed model of action is generally called
Plum and pudding- Plum and pudding
59. The acid which feels to liberate carbon dioxide from sodium bicarbonate is
Sulphuric acid- Sulphuric acid
60. Muddy water is treated with alum in purification process this termed as
Coagulation- Coagulation
62. In a reaction of type a + b c + D 14 and show it to be a first order reaction by
Increasing the concentration of reactant- Increasing the concentration of reactant
63. Which one of the following element is an example of noble gas
Helium- Helium
64. Air is said to be saturated when
It contains maximum content of water vapour- It contains maximum content of water vapour
65. Dry ice is the solid form of
Carbon dioxide- Carbon dioxide
66. Tie knot gas which is substituted for nitrogen in the air used by deep sea divers for breathing is
Helium- Helium
67. The green colour seen in firework displays is due to the chloride salt of
Barium- Barium
68. Which is known as carbolic acid
Phenol- Phenol
69. The ore of aluminium is
Bauxite- Bauxite
70. Which one of the following contains maximum percentage of carbon
Cast iron- Cast iron
72. Which gas emitted by power stations caused acid rains
Sulphur dioxide- Sulphur dioxide
73. Sodium carbonate is commonly known as
Washing soda- Washing soda
74. The following particles has the dual nature of particle wave
75. The number of hydrogen bonds between guanine and cytosine in DNA is
3- 3
76. Atomic explosion is triggered by
Uncontrolled chain reaction- Uncontrolled chain reaction
A homogeneous mixture of two or more substance- A homogeneous mixture of two or more substance
Zinc and copper- Zinc and copper
79. The gas liberated in the Bhopal Gas tragedy was
Methyl isocyanate- Methyl isocyanate
80. Which of the following is the strongest base in aqueous solution
Diethylamine- Diethylamine
81. Chile saltpetre is the common name of
Sodium nitrate Sodium nitrate- Sodium nitrate Sodium nitrate
82. Which is the highest quality of hard call
Anthracite- Anthracite
83. The first organic compound synthesized in the laboratory was
Urea- Urea
84. What happens when a drop of glycerol is added to crushed kmn o4 spread on a paper
Violent explosion- Violent explosion
85. Photochemical smog is a result of the reaction among
NO2, O3 and peroxy acetyl nitrate in the presence of sunlight- NO2, O3 and peroxy acetyl nitrate in the presence of sunlight
86. Carbon footprint can be reduced by
All of those- All of those
87. The radiation that penetrate deepest in our body
Gamma particles- Gamma particles
88. A term brown hair is used for
Photochemical smog- Photochemical smog
89. In galvanization iron is coated with
Zinc- Zinc
90. Acid rain is caused due to pollution of atmosphere by
Oxides of Nitrogen and sulphur- Oxides of Nitrogen and sulphur
91. Peroxyacetyl nitrate is
Secondary pollutant- Secondary pollutant
92. Which of the following appeared to be with the significant potential for accumulation throw food chains
DDT- DDT
93. Catalytic converters are generally made from
Transition metals- Transition metals
94. The chemical composition of heavy water is
D2o- D2o
95. Which of the following elements does not exhibit natural radioactivity
Aluminium- Aluminium
96. Most commonly used bleaching agent is
Chlorine- Chlorine
97. Which one of the following does not contain silver
German Silver- German Silver
98. Chemical name of gammexane is
Benzene hexachloride- Benzene hexachloride
99. Oxides of sulphur present in the atmosphere are washed down by rains to cause
Depletion of fossil fuel Reserves- Depletion of fossil fuel Reserves
100. Which one of the following is also known as solution
A homogeneous mixture- A homogeneous mixture
Chemistry GK Online Test
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