41. Which one of the following Noble Gases is not present in air?
Helium
Argon
Radon
Neon
42. CNG used in automobiles to check pollution mainly consists of
CH4
CO2
N2
H2
43. The important metal used with iron to produce stainless steel is
carbon
tin
chromium
aluminium
44. The device used for converting alternating current to direct current is called
invester
rectifier
transformer
transmitter
45. Which of the following is not a subatomic particle?
Neutron
Proton
Deutron
Electron
46. Polythene bags cannot be destroyed because they are made of
unbreakable molecules
inorganic compounds
polymers
proteins
47. Hydrogen gas can be conveniently used as a fuel for running vehicles if it is absorbed at very low temperature by a substance only to be released at the temperature generated by the exhaust. What is that substance found in India?
Hydrites
Coals
Soap stone
Resins
48. A third allotrope of Carbon, Fullerene was discovered by a team of 3 scientists who were awarded Chemistry Nobel Prize. Identify the one who was not a member of that team.
H.W. Kroto
R.F. Curl
R.E. Smalley
Feyman
49. Vinegar is an aqueous solution of
oxalic acid
citric acid
hydrochloric acid
acetic acid
50. Enriched uranium are
Uranium rods kept under special shield
Natural Uranium in which the component of radio active isotope U235 is artificially increased
Natural Uranium mixed with Thorium
Uranium rods coated with Chromium
51. The atoms, in which the number of protons is same but the number of neutrons is different, are known as
Isotopes
Isobars
Isomers
Isotones
52. Match the List–I with List–II and select the correct answer using the codes given below the lists: List–I List-II (Naturally occurring (Elements present) substance) A. Diamond 1. Calcium B. Marble 2. Silicon C. Sand 3. Aluminium D. Ruby 4. Carbon Codes: A B C D
3 1 2 4
4 2 1 3
2 1 3 4
4 1 2 3
53. The hypo solution used in photography is the aqueous solution of
sodium thiosulphate
sodium tetrathionate
sodium sulphate
ammonium persulphate
54. In which of the following industries is mica used as a raw material?
Iron and Steel
Toys
Glass and pottery
Electrical
55. Which one of the following compounds is used as a sedative?
Potassium bromide
Calcium chloride
Ethyl alcohol
Phosphorus trichloride
56. Which one of the following silver salts is used for producing artificial rains?
Silver Chloride
Silver bromide
Silver nitrate
Silver iodide
57. Which one of the following pairs is correctly matched?
Silver Iodide - Horn Silver
Silver Chloride - Artificial rain
Zinc Phosphide - Rat poison
Zinc Sulphide - Philosopher's wool
58. Match List–I with List–II and select the correct answer by using the codes given below the lists: List–I List–II A. Morphine 1. Antiseptic B. Sodium 2. Alloy C. Boric Acid 3. Analgesic D. German Silver 4. Kerosene oil Codes: A B C D
4 3 1 2
2 4 3 1
3 1 4 2
3 4 1 2
59. Helium is preferred to hydrogen in air balloons because it
is cheaper
is less dense
has greater lifting power
dose not form an explosive mixture with air
60. Indane gas is a mixture of
butane and hydrogen
butane and oxygen
butane and propane
methane and oxygen
12 Total Test
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