Lucent’s GK MCQs Set for
SSC CGL/CHSL/CPO 2023
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Set – 89 of the Lucent’s GK MCQs Set
Q.1) Which of the following is a super-cooled liquid?
(1) Ice-cream (2) Ammonia
(3) Glass (4) Wood
Q.2) Soap is prepared by boiling caustic soda with ?
(1) Alcohol (2) Kerosene oil
(3) Glycerine (4) Fats
Q.3) Bronze is an alloy of ?
(1) Copper and Zinc (2) Tin and Zinc
(3) Copper and Tin (4) Iron and Zinc
Q.4) Which of the following elements is non- radioactive?
(1) Uranium (2) Thorium
(3) Plutonium (4) Zirconium
Q.5) The gas used for artificial fruit ripening of green fruit
is?
(1) Ethylene (2) Acetylene
(3) Ethane (4) Methane
Q.6) Manganite is an ore/mineral of ______.
(1) Beryllium (2) Chromium
(3) Manganese (4) Copper
Q.7) The presence of which of the following salts in water
causes corrosion in steam boilers?
(1) Sodium Chloride (2) Magnesium Chloride
(3) Calcium bicarbonate (4) Potassium bicarbonate
Q.8) The freezing point of fresh water is ?
(1) 0°C (2) 4°C
(3) 3°C (4) 5 C
Q.9) ______ is used for making vinegar.
(1) Tartaric acid (2) Malic acid
(3) Oxalic acid (4) Acetic acid
Q.10) Which of the following elements replaced eka
Aluminium in Mendeleev's Periodic Table?
(1) Scandium (2) Gallium
(3) Titanium (4) Germanium
Q.11) The most reactive among the halogens is ?
(1) Fluorine (2) Chlorine
(3) Bromine (4) Iodine
Q.12) Which one of the following organic compounds has
fruity smell?
(1) Alcohol (2) Aldehyde
(3) Ester (4) Ether
Q.13) What material is used to make electric heater coil?
(1) Copper (2) Iron
(3) Silver (4) Nichrome
Q.14) Which one of the following is a major green gas?
(1) Carbon dioxide (2) Chloro fluorocarbon
(3) Carbon monoxide (4) Freon
Q.15) Pasteurisation is the process in which milk is heated
to?
(1) 60°C for 10 minutes (2) 63° C for 20 minutes
(3) 63°C for 30 minutes (4) 72°C for 10 minutes
Q.16) What is the maximum Water Vapour content in the
atmosphere?
(1) 2 to 3 per cent (2) 3 to 4 per cent
(3) 4 to 5 per cent (4) 5 to 6 per cent
Q.17) Steel contains ?
(1) 0.1 - 2% carbon (2) 5 - 10% carbon
(3) more than 10% carbon (4) no carbon
Q.18) The chemicals most commonly used for cloud seeding
or artificial rainmaking' is/are ?
(1) Silver Iodide
(2) Sodium Chloride
(3) Dry ice or frozen carbon dioxide
(4) All the above
Q.19) The Refrigerant 'FREON' is ?
(1) Calcium Tetra Fluorid
(2) DifluoroDichloro Methane
(3) Fluorspar and Felspar
(4) Hydrofluosilicic Acid
Q.20) _____ is the number of shells for elements of the 3rd
period.
(1) 2 (2) 1
(3) 0 (4) 3
Q.21) Which one among the following polymers is used for
making bullet-proof material?
(1) Polyvinyl chloride (2) Polystyrene
(3) Polyethylene (4) Polyamide
Q.22) The nucleus of an atom consists of ?
(1) electrons and neutrons
(2) electrons and protons
(3) protons and neutrons
(4) All of the above
Q.23) The isotope of Uranium capable of sustaining chain
reaction is ?
(1) U-235 (2) U-238
(3) U-239 (4) N.O.T.
Q.24) Conversion of chemical energy into electrical energy
occurs in ?
(1) Atomic bombs (2) Dynamo
(3) A battery (4) Electric heaters
Q.25) The fuel that is used in modern submarines is ?
(1) Nuclear fuel (2) Petrol
(3) Coal (4) Diesel
Q.26) When lime juice is dropped on baking soda, brisk
effervescence takes place because the gas evolved is ?
(1) Hydrogen (2) Oxygen
(3) Carbon dioxide (4) All of them
Q.27) Which one of the following elements is least likely to
be found in commercial fertilizers?
(1) Nitrogen (2) Phosphorous
(3) Potassium (4) Silicon
Q.28) In the electroplating of gold, the electrolyte used is ?
(1) Gold chloride
(2) Gold nitrate
(3) Gold sulphate
(4) Potassium aurocyanide
Q.29) The basic chemical building block of natural rubber
obtained from trees is ?
(1) Isoprene (2) Vinyl Chloride
(3) Acetylene (4) Neoprene
Q.30) The name of plastic polymer from which combs, toys,
bowls etc., can be made, is ?
(1) Polyurethane (2) Polystyrene
(3) Metallic polysulphides (4) Teflon
Q.31) 'Red Ink' is prepared from ?
(1) Phenol (2) Aniline
(3) Congo red (4) Eosin
Q.32) Gas released during Bhopal tragedy was ?
(1) Sodium isothiocyanate (2) Ethyl isothiocyanate
(3) Potassium isothiocyanate (4) Methyl isothiocyanate
Q.33) Oil of vitriol is ?
(1) nitric acid (2) sulfuric acid
(3) hydrochloric acid (4) phosphoric acid
Q.34) Hydrogen was discovered by ?
(1) Cavendish (2) Lavosier
(3) Rutherford (4) Scheele
Q.35) Glass is a ?
(1) pure solid (2) supercooled liquid
(3) gel (4) polymer
Q.36) Uranium eventually decays into a stable isotope of ?
(1) Radium (2) Thorium
(3) Lead (4) Polonium
Q.37) The substance that is added to make natural rubber
strong and more bouncy is ?
(1) Polythene (2) Sponge
(3) Sulphur (4) Chlorine
Q.38) White phosphorus is always kept under ?
(1) benzene (2) kerosene
(3) ether (4) water
Q.39) The amount of Chlorine available in water after
disinfection is called as ?
(1) free chlorine
(2) residual chlorine
(3) free available chlorine
(4) combined available chlorine
Q.40) What are the major pollutants of cigarette smoke?
(1) Carbon monoxide and dioxin
(2) Carbon monoxide and nicotine
(3) Carbon monoxide and benzene
(4) Dioxin and benzene
Q.41) The chemical name of 'Common salt' is ?
(1) Sodium chloride (2) Sodium nitrate
(3) Ammonium chloride (4) Calcium chloride
Q.42) By-product obtained by soap industry is ?
(1) Caustic soda (2) Glycerol
(3) Naphthalene (4) Caustic potash
Q.43) Polythene is polymer of ?
(1) Ethylene (2) Propylene
(3) Acetylene (4) Aniline
Q.44) Which one is not micronutrient?
(1) Iron (2) Zinc
(3) Sulphur (4) Manganese
Q.45) Who suggested that the most of the mass of atom is
located in nucleus?
(1) Bohr (2) Thomson
(3) Rutherford (4) Avogadro
Q.46) Electromagnet is constructed with which of the
following?
(1) Steel (2) Soft Iron
(3) Aluminium (4) Nickel
Q.47) Which one of the following is a cation?
(1) Carbonate (2) Nitrite
(3) Ammonium (4) Hydroxide
Q.48) Ginger is an example of ?
(1) Modified Node (2) Modified Root
(3) Modified Stem (4) Tap Root
Q.49) The ore which is found in abundance in India is ?
(1) monazite (2) bauxite
(3) magnetite (4) fluorspar
Q.50) Baryllium Sulphate is less soluble in water due to ?
(1) High inflammable energy
(2) Low Energy of dissociation
(3) Low inflammable energy
(4) Lonic band
