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T2 CH4 Air Science - T2 CH4 Air

Tamil Nadu Board - STD 6 - Science (Tamil - English Medium). 48 questions in this chapter.

Question types

T2 CH4 Air question types

48 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

48
Questions
8
Question groups
5
Question types
Sample Questions

T2 CH4 Air questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
$.......$ and $.......$ are the two gases, which when taken together, make up about $99$ percentage of air.
  1. Nitrogen
  2. carbon$-$di$-$oxide
  3. Noble gases
  4. Oxygen
  • A
    $I$ and $II$
  • B
    $I$ and $III$
  • C
    $II$ and $IV$
  • ✓
    $I$ and $IV$

Answer: D.

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Q 2MCQ1 Mark
Nitrogen is used in the food packaging industry because it _____.
  • A
    provides colour to the food
  • B
    provides oxygen to the food
  • C
    adds proteins and minerals to the food
  • ✓
    keeps the food fresh

Answer: D.

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Q 3MCQ1 Mark
The constituent of air that supports combustion is _____.
  • A
    Nitrogen
  • B
    water vapour
  • ✓
    Oxygen
  • D
    water vapour

Answer: C.

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Q 4MCQ1 Mark
Gas exchange takes place in plants using _____.
  • ✓
    Stomata
  • B
    Chlorophyll
  • C
    Leaves
  • D
    Flowers

Answer: A.

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Q 21Match The Following5 Marks
Match the following
1. Moving Air Photosynthesis
2. Layer in which we live Troposphere
3. Stratosphere Wind
4. Oxygen Ozone layer
5. carbon-di-oxide Combustion
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Q 23[ 2 Marks Questions ]2 Marks
Arrange the following statements in correct sequence
  1. Plants manufacture food by a process called photosynthesis.
  2. Plants require energy for their growth.
  3. Plants take in oxygen and release carbon-di-oxide just as animals.
  4. Plants take carbon-di-oxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
  5. Such oxygen is available to animals and human beings for breathing.
  6. During this process, oxygen is released by plants.
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