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Q54 (CISF/2017) Science & Technology › Basic Science (Physics, Chemistry, Biology)

Which one of the following statements about carbon dioxide is not correct ?

Result
Your answer: —  ·  Correct: A

Explanation

Carbon dioxide (CO2) is an acidic oxide, not a basic oxide. As a non-metal oxide, it reacts with water to form carbonic acid (H2CO3), a weak acid. Basic oxides are typically formed by metals, such as Calcium oxide (CaO) or Sodium oxide (Na2O).

The other statements are scientifically accurate:

  • Greenhouse gas: CO2 is a primary greenhouse gas that traps heat in the Earth's atmosphere.
  • Dry ice: Solid carbon dioxide is known as dry ice; it is used as a cooling agent and undergoes sublimation at -78.5 °C.
  • Photosynthesis: During photosynthesis, green plants consume CO2 and water, using sunlight to produce glucose and oxygen.
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SIMILAR QUESTIONS

NDA-II · 2009 · Q95 Relevance score: 4.29

Following statements are made in connection with carbon dioxide (C02): 1. C02 is a poisonous gas. 2. C02 is an acidic oxide. 3. C02 turns lime water milky. Which of the statement* given above is/are correct?

NDA-II · 2008 · Q76 Relevance score: 4.22

Which of the following statements regarding carbon dioxide is/are correct? 1. It is prepared on large scale by the action of water on lime. 2. In the solid form it can be used as a refrigerant. Select the correct answer using the code given below :

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Which one of the following statements about the process of photosynthesis is correct ?

IAS · 2005 · Q121 Relevance score: 3.34

Consider the following statements: 1. Kyoto Protocol came into force in the year 2005. 2. Kyoto Protocol deals primarily with the depletion of the Ozone layer. 3. Methane as a greenhouse gas is more harmful than carbon dioxide. Which of the statements is/are correct?