Chemistry Important MCQ GK Quiz PDF

Q.1: Who was the pioneer of atomism: atomic theory of matter?
[A] Rutherford
[B] Avogadro
[C] Mendleaf
[D] Dalton

[D] Dalton

Q.2: The smallest particle of a substance which cannot be partitioned is called?
[A] compound
[B] molecules
[C] atom
[D] elements

[C] atom

Q.3: Which pair is not correctly matched?

Invention – (Inventor)
[A] Protron – (Rutherford)
[B] Neutron – (Chadwick)
[C] Electron – (JJ Thomson)
[D] Photron – (Yukawa)

[D] Photron – (Yukawa)

Q.4: Atomic nucleus is in the atom?

[A] Proton and Neutron
[B] Proton and electron
[C] electrons and neutrons
[D] Protons and neutrons

[A] Proton and Neutron

Q.5: Who first detected radioactivity?

[A] Madel Curie
[B] Einstein
[C] Rutherford
[D] Henry Bacural

[D] Henry Bacural

Q.6: By what method is camphor purified?

[A] sublimation
[B] fractional distillation
[C] distillation
[D] crystal

[A] Elevation

Q.7: The number of protons present in the nucleus of an atom is called?
[A] mass number
[B] Total number of mass
[C] Atomic Number
[D] atomic weight

[C] Atomic Number

Q.8: What is the volume of one gram molecule of different gases at normal temperature and pressure?
[A] 2.24 liters
[B] 0.224 liters
[C] 224.0 liters
[D] 22.4 liters

[D] 22.4 liters

Q.9: What is the total number of atoms in one mole?
[A] 60.23 X 1023
[B] 6.023 X 1021
[C] 6.023 X 1023
[D] 602.3 X 1023

[C] 6.023 X 1023

Q.10: Who discovered radium?

[A] Robert Pierre
[B] Madame Curie
[C] Henry Bacural
[D] Both (A) and (B)

Q.11: Which of the following is universal solvent?
[A] Water
[B] alcohol
[C] ether
[D] Naphtha

[A] Water

Q.12: How does an aqueous solution of acid react to blue litmus?
[A] turns red
[B] turns yellow
[C] turns green
[D] does not affect the total

[A] turns red

Q.13: What is the pH value of blood?
[A] 6.4
[B] 4.8
[C] 7.4
[D] -8.4

[C] 7.4

Q.14: What is the pH value of pure water?
[A] 6
[B] 7
[C] 8
[D] 9

[B] 7

Q.15: What happens in deuterium?
[A] a neutron and a proton
[B] two neutrons and one proton
[C] two neutrons and two protons
[D] One neutron and two protons

[A] a neutron and a proton

Q.16: Which is the lightest element?
[A] helium
[B] sodium
[C] Hydrogen
[D] potassium

[C] Hydrogen

Q.17: Oxidation occurs in-
[A] electrons are taken
[B] electrons are freed
[C] protons are ingested
[D] protons are released

[B] electrons are freed

Q.18: What is air?
[A] mixture
[B] compounds
[C] element
[D] All these

[A] mixture

Q.19: Who gave the modern periodic rule?
[A] Newland
[B] Mendleaf
[C] Moseley
[D] Mandel

[B] Mendleaf

Q.20: Which is the most electromagnetic element?
[A] Fluorine
[B] bromine
[C] iodine
[D] chlorine

[A] Fluorine

Q.21: What is the basis of classification of elements in modern periodic table?
[A] atomic mass
[B] atomic number
[C] Parameter density
[D] none

[B] atomic number

Q.22: According to Mendeleev, whose properties are the recurring functions of the elements?
[A] atomic wight
[B] atomic number
[C] atomic density
[D] of all

[A] of atomic weight

Q.23: The heaviest elements are –
[A] Stransium
[B] Uranium
[C] plutonium
[D] Lithium

[B] Uranium

Q.24: ‘Hematite’ is the metal ore of which metal?

[A] Bauxite
[B] aluminum
[C] Iron
[D] gold

[C] Iron

Q.25: Which is the alloy of aluminum?

[A] Brass
[B] German Silver
[C] bronze
[D] magnesium

[D] magnesium

Q.26: ‘German Silver’ is a mixture of
[A] zinc and copper
[B] Brass, copper and nickel
[C] copper, zinc and aluminum
[D] copper, zinc and nickel

[D] copper, zinc and nickel
Q.27: ‘Brass’ is a mixture of
[A] copper + nickel
[B] copper + strontium
[C] Copper + Zinc
[D] copper + aluminum

[C] Copper + Zinc

Q.28: From which ore is aluminum extracted?
[A] Bauxite
[B] Korandam
[C] Felspar
[D] All these

[D] All these

Q.29: Pitch bland is the ore of which metal?

[A] corundum
[B] Uranium (U)
[C] Chromium (Cr)
[D] Melekite

[A] corundum

Q.30: What is the major cause of permanent hardness in water?

[A] Bicarbonates of calcium and magnesium
[B] Calcium and magnesium sulfates
[C] Calcium and magnesium nitrate
[D. ALL OF THE ABOVE

[B] Calcium and magnesium sulfates

Q.31: How is the hardness of water removed?

[A] By adding bleaching powder to water
[B] By adding chlorine in water
[C] By adding sodium carbonate to J.L.
[D] DDT in water By putting

[C] By adding sodium carbonate in water

Q.32: What is the major cause of temporary hardness of water?

[A] Bicarbonates of calcium and magnesium
[B] Calcium and magnesium sulfates
[C] Calcium and magnesium nitrate
[D] Both (B) and (C)

[D] Both (B) and (C)

Q.33: Ordinary glass is a mixture of
[A] silica
[B] sodium silicate
[C] calcium silicate
[D] of these three

[D] of these three

Q.34: Which gas is filled in the tire tubes of the aircraft?

[A] Helium (He)
[B] argon (Ar)
[C] Nian (Ne)
[D] redon (Rn)

[C] nian

Q.35: Which gas is filled in the balloon?
[A] Nian
[B] redon
[C] Helium
[D] argon

[C] Helium

Q.36: What is the chemical name of hypo solution used in photography?
[A] Silver Bromide
[B] sodium thiosulfate
[C] sodium silica
[D] calcium carbonate

[B] sodium thiosulfate

Q.37: What is laughing gas?
[A] nitrous oxide
[B] ammonia
[C] ammonium chloride
[D] nitrogen peroxide

[A] nitrous oxide

Q.38: Which one has higher percentage of carbon?
[A] pig iron
[B] beat iron
[C] Steel
[D] aluminum

[A] pig iron

Q.39: Which is the most rigid element?
[A] gold
[B] aluminum
[C] diamond
[D] Silver

[C] diamond

Q.40: Substances which have similar chemical properties and different physical properties are called?
[A] polymer
[B] isomer
[C] Upper
[D] isobar

[C] Upper

Q.41: Carbon is used to make pencils?
[A] graphite
[B] diamond
[C] tin
[D] lead

[A] graphite

Q.42: Different compounds having the same molecular formula are called?
[A] allotropy
[B] polymer
[C] isobars
[D] isospin

[D] isomer

Q.43: Diamond and graphite are –
[A] is isomeric
[B] is similar to carbon
[C] is isotopic
[D] is metal

[B] is similar to carbon

Q.44: Polyethylene is the polymer of
[A] Ethylene
[B] aniline
[C] Cellulose
[D] glucose

[A] Ethylene

Q.45: Natural rubber is a polymer of

[A] Neoprene
[B] isoprene
[C] Thaikal
[D] nylon

[B] isoprene

Q.46: Which is the best quality coal?
[A] lignite
[B] bituminous
[C] anthracite
[D] Pete

[C] anthracite

Q.47: Which gas is in cow dung gas?
[A] Ethane
[B] propane
[C] butane
[D] methane

[D] methane

Q.48: Liquefied petroleum gas (LPG) is a mixture of

[A] Ethane, Butane and Propane
[B] Propane and Isotones
[C] Butane and Methane
[D] butane and ethane

[A] Ethane, Butane and Propane

Q.49: Synthetic fiber is –
[A] rayon
[B] silk
[C] wool
[D] cellulose

[A] rayon

Q.50: What is the antifungal properties of a fuel?

[A] atomic number
[B] Natural Number
[C] octane number
[D] All these

[C] octane number

Q.51: What is the fuel used to drive a rocket?
[A] Coal Gas
[B] biomass
[C] coke
[D] propellant

[D] propellant

Q.52: C.N.G. Contains the largest amount of carbon present in?

[A] methane
[B] propane
[C] butane
[D] ethane

[A] methane

Q.153: What is the chemical name of ‘aspirin’?
[A] citric acid
[B] cyanocobalamin
[C] ascorbic acid
[D] acetal salicylic acid

[D] acetal salicylic acid

Q.54: Which of the following is the most toxic gas released from motor vehicle smoke?

[A] methane
[B] carbon monoxide
[C] carbon dioxide
[D] Chloro fluorocarbons

[B] carbon monoxide

Q.55: What is the change of ‘water to be ice frozen’?
[A] physical change
[B] chemical change
[C] rapid change
[D] undesirable changes

[A] physical change

Q.56: What is the change from ‘milk to curd’?

[A] physical change
[B] exothermic change
[C] Chemical Transformation
[D] dull change

[C] Chemical Transformation

Q.57: What affects the velocity of a reaction the most?
[A] heat
[B] Water
[C] air
[D] force basic chemistry

[A] heat