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Q:

Concentration of water vapour in troposphere is

A) 0­-4% B) 10­-14%
C) 20-­24% D) 30­-34%
 
Answer & Explanation Answer: A) 0­-4%

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Q:

Non­-green plants lack which of the following?

A) Chlorophyll B) Lycophyll
C) Cyanophyll D) Phototropism
 
Answer & Explanation Answer: A) Chlorophyll

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Q:

What is the type of Energy possessed by a stretched rubber band?

A) Potential energy B) Kinetic energy
C) Chemical energy D) Thermal energy
 
Answer & Explanation Answer: D) Thermal energy

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Filed Under: Physics
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Q:

Which of the following represents the most complex trophic level?

A) Community B) Population
C) Ecosystem D) Species
 
Answer & Explanation Answer: C) Ecosystem

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Filed Under: General Science

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Q:

Which among the following is NOT an event during the photosynthesis process?

A) Absorption of light energy by chlorophyll B) Conversion of light energy to chemical energy
C) Splitting of water molecules into hydrogen and oxygen D) Oxidation of carbon dioxide to carbohydrates
 
Answer & Explanation Answer: D) Oxidation of carbon dioxide to carbohydrates

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Filed Under: Biology
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Q:

Which of the following constitutes highest percentage of Green House gases?

A) Ethane B) Methane
C) Carbon Dioxide D) Propane
 
Answer & Explanation Answer: C) Carbon Dioxide

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Filed Under: Chemistry
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Q:

In the Modern Periodic Table, elements are arranged in

A) increasing atomic mass number B) increasing atomic number
C) decreasing atomic mass number D) decreasing atomic number
 
Answer & Explanation Answer: B) increasing atomic number

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Q:

Which of the following allotropes of Carbon is used as a reducing agent in metallurgy?

A) Carbon Black B) Graphite
C) Charcoal D) Coke
 
Answer & Explanation Answer: D) Coke

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