CSS General Knowledge Online Entry Test With Answers

CSS General Knowledge Online Entry Test

Sr. # Questions Answers Choice
1 The ratio of pure gold in 18 carat gold is: 60% 75% 85% 100%
2 The hardest substance available on earth is: Diamond Silver Coal Platinum
3 The element nickel is a: Magnetic metal Radioactive metal Complex metal Non magnetic metal
4 Water is compound because: It contains two different elements joined by chemical bonds It contains hydrogen and oxygen It exists as solid, liquid or gas None of these
5 Monazite is an ore of: Iron Thorium Titanium Zirconium
6 The element required for solar energy conversion is: Beryllium Silicon Tantalum Ultra pure carbon
7 Brass is an alloy of: Nickel and copper Zinc and copper Nickel and zinc Nickel and silver
8 Which of the following is the basic of modern periodic tables? Atomic number Atomic size Nickel and zinc Nickel and silver
9 Soda water contains: Carbon dioxide Nitrous acid Carbonic acid Sulphuric acid
10 The metal that is present in photo films is: Mercury Platinium Silver Magnesium
11 Liquefied petroleum gas consists of mainly: Methane,butane and propane Methane,hexane and heptane Ethane,hexane and octane <blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;">None of these</blockquote>
12 Which of the following is called a strategic metal? Silicon Germanium Titanium Uranium
13 permanent hardness of water due to sulphates of the metal, can be removed by the use of: Nitrates Zeolites Sulphonates None of these
14 Galvanized iron sheets have a coating of: Tin Zinc Lead Chromium
15 Carbon,diamond and graphite are together called: Isomers Allotropes Isomorphs Isotopes
16 Marsh gas is: Methane Hydrogen Ethane Nitrogen
17 Which of the following metals was first discovered by man? Bronze Silver Copper Iron
18 Emerald is_______ in color.
 Voilet Yellow Deep green Prussian blue
19 The percentage of carbon is least in: Steel Grey cast iron White cast iron Wrought iron
20 The purest form of iron is: Steel Wrought iron Cast iron Pig iron
21 Which of the following is used as a lubricant? Silica Graphite Iron oxide Diamond
22 Which of the following is not a compound? Silica Black lead Red lead Slaked time
23 Two or more forms of a chemical element having different physical properties but having identifiable chemical compounds are called: Allotropes Isotopes Isomers Isotones
24 Which of the following metals remains in liquid form under normal conditions? Uranium Mercury Radium Zinc
25 Which of the following gases is lighter than air? Carbon dioxide Ammonia Oxygen Chlorine
26 Potassium nitrate is used in: Salt Glass Medicine Fertilizer
27 Which of the following is the lightest gas? Nitrogen Hydrogen Oxygen Carbon dioxide
28 Permanent hardness of water may be removed by the addition of: Aluminium&nbsp; Sodium carbonate Lime Potassium
29 The gases used in different types of welding would include: Oxygen and acetylene Hydrogen and nitrogen Oxygen and nitrogen Hydrogen and helium
30 Heavy water is: Tritium oxide Deuterium oxide Rain water Water at -4°C
31 The gas usually exist in the electric bulb is: Hydrogen Nitrogen Oxygen Carbon dioxide
32 Which of the following is not a neutral oxide? Sulphur dioxide Water Nitric oxide Nitrous oxide
33 Which of the following gas is not known as green house gas? Methane Nitrous oxide Carbon dioxide Hydrogen
34 The two elements that are frequently used for making transistors are: Boron and aluminium Silicon and germanium Iridium and germanium Niobium and columboan
35 Bleaching powder is made from: Sulphur dioxide lime and chlorine Bauxite Soda ash and lime
36 The filament of an electric bulb is made up of:  Iron Tungsten Nichrome Graphite
37 Washing soda is the common name of: Calcium carbonate Calcium bicarbonate Sodium carbonate Sodium bicarbonate
38 Which of the following is the best conductor of electricity? Silver Mica Copper Zinc
39 Which of the following is is the second most abundant metal in the earth's crust? Copper Iron Zinc Aluminium
40 Which of the following is used in pencils? Silicon Charcoal Graphite Phosphorus
41 Which of the following pairs does not contains a coinage metal? Zinc and Gold Copper and Gold Silver and Gold Copper and Silver
42 Which of the following substance is a bad conductor of electricity but a good conductor of heat? Asbestos Mica Celluloid None of these
43 The formula of plaster of Paris is: CaSO<sub>4</sub> Ca<sub>2</sub>SO<sub>4</sub>2H<sub>2</sub>O 2CaSO<sub>4</sub>H<sub>2</sub>O Ca<sub>2</sub>SO<sub>4</sub>2H<sub>2</sub>O<sub>2</sub>
44 Permanent hardness of water can be removed by adding: Potassium Washing soda Chlorine None of these
45 The chemical name for urea is: Anuerin Chloroethane Carbamide None of these
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