general concepts of chemistry - Category wise Question and Answer Practice Test with Solutions
Question : 1
Chemical formula of Aluminium sulphate is
a) Al3(SO4)2
b) Al2 (SO4)3
c) AlSO4
d) None of these
Answer »Answer: (b)
Question : 2
The molecular formula P2O5 means that
a) there are twice as many P atoms in the molecule as there are O atoms
b) a molecule contains 2 atoms of P and 5 atoms of O
c) the ratio of the mass of P to the mass of O in the molecule is 2:5
d) the ratio of the mass of P to the mass of O in the molecule is 5 : 2
Answer »Answer: (b)
Question : 3
Which one is a bivalent ion?
a) sulphide
b) sodium
c) calcium
d) Both (b) and (c)
Answer »Answer: (d)
Ca++ and S– –
Question : 4
In the reaction : PbO + C ⟶ Pb + CO
a) C is reductant
b) PbO is oxidised
c) PbO is oxidant
d) Both (a) and (c)
Answer »Answer: (d)
In this carbon reduces PbO to Pb so carbon (C) is reducing agent (reductant) PbO acts as oxidising agent (oxidant) as it oxidises C to CO.
Question : 5
The branch of chemistry which deals with study of the methods of detection and determination of elements and compounds is
a) Analytical chemistry
b) Physical chemistry
c) Nuclear chemistry
d) Bio chemistry
Answer »Answer: (a)
IMPORTANT general science mcq EXERCISES
general science mcq CATEGORIES
-
» Measurement And SI Units
-
» Measuring Devices And Scales
-
» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
-
» Force Of Gravity, Solids And Fluids
-
» Motion Under Gravity
-
» Physical Properties Of Materials
-
» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
-
» Electric Current And Magnetism
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» Nuclear Physics And Conductivity
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» Modern And Space Physics, Sources Of Energy
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» General Concepts Of Chemistry
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» Nature Of Matter And Composition
-
» Atomic Structure Molecules And Nuclear Chemistry
-
» Classification Of Elements, Chemical Bonding, Periodicity In Properties & Physical Transformation
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» Metals, Non Metals, Minerals, Ores, Properties, Uses
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» Alloys, Carbon & Its Various Forms, Hydrogen & Compounds, Sulphur, Nitrogen, Halogen & Inert Gases
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» Acids, Bases, Salts And Metals
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» Hydrocarbon, Alcohol, Polymer, Organic Acid And Explosive Substance
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» Fuel, Food Preservation, Nutrition, Medicine, Detergents And Fertilizers
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» Inorganic Chemistry
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» Organic Chemistry
-
» Environmental Chemistry
-
» Some Important Man Made Materials
-
» Sub Divisions Of Biology
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» Genetics, Evolution Of Life & Ecological Biodiversity
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» Taxonomy
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» Heredity
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» Biofertilizer
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» Biological Classification Cell Tissues And Division
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» Human Anatomy
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» Blood Transport System
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» Digestion And Excretion
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» Photosynthesis
-
» Vitamins, Nutrition, Health, Disease And Treatment
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» Endocrine Glands, Hormones
-
» Physiology Of Plants, Humans And Animals
-
» Reproduction
-
» Genetic Engineering And Bio Technology
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