CSS General Knowledge Topic 1 Everyday Science With Answers

CSS General Knowledge Topic 1 Everyday Science

Sr. # Questions Answers Choice
1 Which variety of glass is heat resisting? Pyrex glass Hard glass Flint glass Bottle glass
2 Detergents used for cleaning clothes and utensils contain: Nitrates  Sulphates Sulphonates Bismuthinites
3 Which of the following fibre is least proneto fire? Rayon  Cotton Nylon None of these
4 The first synthetic fibre made by man was: Rayon Nylon Polyster None of these
5 One fibres are mainly used for which of the following? Weaving Communication Eye surgery Food industry
6 Which of the following was to be discovered first in the chromosphere of the sun? Xenon Helium Neon Krypton
7 Which of the following ores does not contain iron? Haematite Magnenite Cassiterite   Limonite
8 In fireworks, the green flame is produced because of: Mercury Barium Sodium Potassium
9 The gas that usually causes explosions in coal mines is: Hydrogen Methane Carbon monoxide Air
10 Bell metal is an alloy of: Brass and nickel Zinc and copper Tin and copper Nickle and copper
11 Which gas is used to preparation of soda water? Ammonia Carbon dioxide Hydrogen Nitrogen
12 Which of the following elements is obtained from sea weeds? Argon Sulphur Iodine Vanadium
13 Which of the following characteristics is not shown by hydrogen? It supports combustion It burns in air to form water It combines all metals None of these
14 The insert gas which is substituted for nitrogen in the air, used by deep sea divers for breathing is: Argon Helium Krypton Xenon
15 Which of the following is the most stable element? Uranium Hydrogen Lead Oxygen
16 The average salinity of sea water is: 2% 3.5% 5.5% 7%
17 The element found on the surface of the moon is: Tin Titanium Tungsten Tantalum
18 The highest grade of coal whose surface is shining and has the highest colorific value,is: Bituminous Lignite Anthracite Peat
19 The ratio of pure gold in 18 carat gold is: 60% 75% 85% 100%
20 The hardest substance available on earth is: Diamond Silver Coal Platinum
21 The element nickel is a: Magnetic metal Radioactive metal Complex metal Non magnetic metal
22 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
23 Monazite is an ore of: Iron Thorium Titanium Zirconium
24 The element required for solar energy conversion is: Beryllium Silicon Tantalum Ultra pure carbon
25 Brass is an alloy of: Nickel and copper Zinc and copper Nickel and zinc Nickel and silver
26 Which of the following is the basic of modern periodic tables? Atomic number Atomic size Nickel and zinc Nickel and silver
27 Soda water contains: Carbon dioxide Nitrous acid Carbonic acid Sulphuric acid
28 The metal that is present in photo films is: Mercury Platinium Silver Magnesium
29 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>
30 Which of the following is called a strategic metal? Silicon Germanium Titanium Uranium
31 permanent hardness of water due to sulphates of the metal, can be removed by the use of: Nitrates Zeolites Sulphonates None of these
32 Galvanized iron sheets have a coating of: Tin Zinc Lead Chromium
33 Carbon,diamond and graphite are together called: Isomers Allotropes Isomorphs Isotopes
34 Marsh gas is: Methane Hydrogen Ethane Nitrogen
35 Which of the following metals was first discovered by man? Bronze Silver Copper Iron
36 Emerald is_______ in color.
 Voilet Yellow Deep green Prussian blue
37 The percentage of carbon is least in: Steel Grey cast iron White cast iron Wrought iron
38 The purest form of iron is: Steel Wrought iron Cast iron Pig iron
39 Which of the following is used as a lubricant? Silica Graphite Iron oxide Diamond
40 Which of the following is not a compound? Silica Black lead Red lead Slaked time
41 Two or more forms of a chemical element having different physical properties but having identifiable chemical compounds are called: Allotropes Isotopes Isomers Isotones
42 Which of the following metals remains in liquid form under normal conditions? Uranium Mercury Radium Zinc
43 Which of the following gases is lighter than air? Carbon dioxide Ammonia Oxygen Chlorine
44 Potassium nitrate is used in: Salt Glass Medicine Fertilizer
45 Which of the following is the lightest gas? Nitrogen Hydrogen Oxygen Carbon dioxide
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