Which process is described: 'converts N2 into usable nitrogen compounds'?

Nitrogen fixation. Given 2, asked for the unknown. By F = m*a, V = I*R, n = m/M, v = f*lambda, KE = (1/2) m v^2). F = m*a, V = I*R, n = m/M, v = f*lambda, KE = (1/2) m v^2). recall the defining law / equation for the named quantity (e.g. Hence option A) Nitrogen fixation. Others fail: option B) 'Evaporation' doesn't hold - Evaporation: liquid water becomes water vapour; option C) 'Condensation' is incorrect: Condensation: water vapour forms clouds/droplets.

Class 9 · Science · Biology

Earth as a System MCQs

Take an interactive Earth as a System quiz for Class 9 Science - tap an answer for instant feedback and a step-by-step solution. These are a few sample questions; practice the full Earth as a System set free on the RankByte app.

Topics covered

Uneven Heating, Wind and Ocean CurrentsBiogeochemical CyclesHuman Impact on Earth's Processes

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Biogeochemical Cycles Human Impact on Earth's Processes Uneven Heating, Wind and Ocean Currents

Earth as a SystemQuiz - Solve & Score

A few sample questions with instant answers and solutions - the full set is in the app.

Q1. Which process is described: 'removes CO2 and releases O2'?
- A.Photosynthesis
- B.Nitrogen fixation
- C.Denitrification
- D.Evaporation
Answer: A. Photosynthesis
Q2. Which process is described: 'uses O2 and releases CO2'?
- A.Respiration
- B.Denitrification
- C.Evaporation
- D.Condensation
Answer: A. Respiration
Q3. Which process is described: 'converts N2 into usable nitrogen compounds'?
- A.Nitrogen fixation
- B.Evaporation
- C.Condensation
- D.Transpiration
Answer: A. Nitrogen fixation
Given 2, asked for the unknown. By F = m*a, V = I*R, n = m/M, v = f*lambda, KE = (1/2) m v^2). F = m*a, V = I*R, n = m/M, v = f*lambda, KE = (1/2) m v^2). recall the defining law / equation for the named quantity (e.g. Hence option A) Nitrogen fixation. Others fail: option B) 'Evaporation' doesn't hold - Evaporation: liquid water becomes water vapour; option C) 'Condensation' is incorrect: Condensation: water vapour forms clouds/droplets.