modern and space physics, sources of energy - Category wise Question and Answer Practice Test with Solutions
Question : 17
Which among the following statements are the requirements of good source of energy?
- It should do a large amount of work per unit volume or mass.
- It should be easily accessible.
- It should be easy to store and transport.
- It should be economical.
a) A, B, C
b) B, C, D
c) A, B
d) All of thesegenerator.
Answer »Answer: (d)
Question : 19
At the present level of technology available in India, solar energy can be conveniently used to :
- Supply hot water to residential buildings.
- Supply water for minor irrigation projects.
- Provide street lighting.
- Electrify a cluster of villages and small towns.
a) 2 and 4
b) 1 and 3
c) 1, 2, 3 and 4
d) 1, 2 and 3
Answer »Answer: (c)
Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies.
At present solar energy in our country is used for solar water heater.
Solar lights that charge during the day and light up at night are a common sight along walkways.
Question : 20
Audio signal cannot be transmitted because:
a) The signal cannot be amplified for distance communication
b) The transmitting antenna length is very small to design
c) The signal has more noise
d) The transmitting antenna length is very large and impracticable.
Answer »Answer: (d)
Following are the problems which are faced while transmitting audio signals directly.
- These signals are relatively of short range.
- If every body started transmitting these low frequency signals directly, mutual interference will render all of them ineffective.
- Size of antenna required for their efficient radiation would be larger i.e. about 75 km.
IMPORTANT general science mcq EXERCISES
set 2 Online Quiz
Click to Start..general science mcq CATEGORIES
-
» 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
-
» Physical Properties Of Materials
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» 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
-
» 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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