inorganic chemistry - Category wise Question and Answer Practice Test with Solutions
Question : 6 [IAS (Pre) 2001]
Consider the following statements with reference to the periodic table of chemical elements.
- Ionization potential gradually decreases along a period.
- In a group of elements, electron affinity decreases as the atomic weight increases.
- In a given period, electronegativity decreases as the atomic number increases.
a) Only 1
b) 1 and 3
c) Only 2
d) 2 and 3
Answer »Answer: (c)
Question : 8
When iron is left exposed in open air, it gets rusted. Which constituent(s) of air is /are responsible for rusting iron?
- Oxygen gas present in air
- Moisture present in air
- Carbon dioxide gas present in air
a) 1 and 2
b) 2 only
c) 1 only
d) 2 and 3
Answer »Answer: (a)
Both oxygen and moisture present in air cause rusting of iron.
Question : 9
Which of the following statements about diamond are correct?
- It is used as a gem in jewellery because of its ability to reflect light.
- It is good conductor of electricity.
- It is used for cutting glass, marble stones and other hard materials.
- It is used for drilling of rocks.
a) 1, 2 and 3
b) 2, 3 and 4
c) 1, 3 and 4
d) 2 and 4
Answer »Answer: (c)
Diamond, an allotrope of carbon, has very high refractive because of which it is used as a gem in jewellery.
It is used for cutting glass, marble stones and other hard materials and for drilling rocks. It is a bad conductor of electricity. It is the hardest material known.
Question : 10
$H_2O$ is liquid and $H_2S$ is a gas because
a) atomic radius of oxygen is less than that of sulphur.
b) oxygen is less electronegative than sulphur.
c) oxygen forms stronger hydrogen bonding than sulphur.
d) atomic radius of oxygen is greater than that of sulphur.
Answer »Answer: (c)
H2O has an intermolecular hydrogen bond between its molecules (H—O—H------H—O—H) while H2S has weak van der Waal’s forces between its molecules.
Hence the molecules of H2O are more strongly packed than H2S, thus water is a liquid state at room temperature.
IMPORTANT general science mcq EXERCISES
set 2 Online Quiz
Click to Start..general science mcq CATEGORIES
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» Measurement And SI Units
-
» Measuring Devices And Scales
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» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
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» Force Of Gravity, Solids And Fluids
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» Motion Under Gravity
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» Physical Properties Of Materials
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» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
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» 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
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» Atomic Structure Molecules And Nuclear Chemistry
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» 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
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» Environmental Chemistry
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» Some Important Man Made Materials
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» 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
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» Vitamins, Nutrition, Health, Disease And Treatment
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» Endocrine Glands, Hormones
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» Physiology Of Plants, Humans And Animals
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» Reproduction
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» Genetic Engineering And Bio Technology
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