metals, non metals, minerals, ores, properties, uses - Category wise Question and Answer Practice Test with Solutions
metals, non metals, minerals, ores, properties, uses PRACTICE TEST [4 - EXERCISES]
set 1
set 2
set 3
set 4
Question : 29
Consider the following elements:
- Copper
- Gold
- Platinum
- Silver
a) (i), (ii) and (iv)
b) (i) and (ii)
c) (ii) and (iii)
d) (iii) and (iv)
Answer »Answer: (a)
Cu, Au, and Ag are known as coinage metals and occur free in nature.
Because of nobility, they are frequently found in their native state.
Question : 30
When iron is left exposed to open air, it gets rusted. Which constituent(s) of air is /are responsible for rusting iron?
- Oxygen gas present in the air
- Moisture present in the air
- Carbon dioxide gas present in the air
a) (i) and (ii)
b) (i) only
c) (ii) only
d) (ii) and (iii)
Answer »Answer: (a)
Both oxygen and moisture present in air cause rusting of iron.
IMPORTANT general science mcq EXERCISES
set 1 Online Quiz
Click to Start..general science mcq CATEGORIES
-
» Measurement And SI Units
-
» Measuring Devices And Scales
-
» 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
-
» Physical Properties Of Materials
-
» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
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» Electric Current And Magnetism
-
» 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
-
» 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
-
» Reproduction
-
» Genetic Engineering And Bio Technology
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