light, heat, thermodynamics, wave motion, sound, optics & oscillations - Category wise Question and Answer Practice Test with Solutions
light, heat, thermodynamics, wave motion, sound, optics & oscillations PRACTICE TEST [16 - EXERCISES]
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set 16
Question : 7 [CDS]
Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wire is slightly increased and both the wires are made to vibrate simultaneously?
a) Beats
b) Noise
c) Resonance
d) Non-linear effects
Answer »Answer: (c)
Question : 8 [IAS (Pre) 2003]
Consider the following statements.
- Steam at 100ºC and boiling water at 100ºC contain the same amount of heat.
- The latent heat of the fusion of ice is equal to the latent heat of the vaporization of water.
- In an air conditioner, heat is extracted from the room air at the evaporator coils and is ejected out at the condenser coils.
a) 2 and 3
b) Only 2
c) 1 and 2
d) Only 3
Answer »Answer: (d)
Question : 9
The small ozone layer on the top of stratosphere is crucial for human survival as it –
a) decreases oxygen in the atmosphere
b) increases the carbon dioxide in the atmosphere
c) increases carbon mono-oxide in the atmosphere
d) absorbs ultraviolet radiations
Answer »Answer: (d)
The ozone layer in stratosphere absorbs ultraviolet radiation in sun rays which are harmful. For human being.
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set 2 Online Quiz
Click to Start..general science mcq CATEGORIES
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» Measurement And SI Units
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» 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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