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Environmental Chemistry · Question 1

NEET (UG) 2023MCQEasy📈 Topic in 12% papers+4−1
1

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

  1. Both Statement I and Statement II are false
  2. Statement I is correct but Statement II is false.
  3. Statement I is incorrect but Statement II is true.
  4. Both Statement I and Statement II are true.

Answer

(3) Statement I is incorrect but Statement II is true.

Solution

Statement I: Incorrect. Eutrophication is caused by nutrient-enriched water (excess phosphate and nitrate), not by nutrient-deficient water.

Statement II: Correct. The resulting algal bloom and its decomposition consume dissolved oxygen, so the oxygen level of the water body falls.

Answer: (3)

Out of syllabusNEET (UG) 2023

Keep practising — Environmental Chemistry

2

The pollution due to oxides of sulphur gets enhanced due to the presence of: (a) particulate matter (b) ozone (c) hydrocarbons (d) hydrogen peroxide Choose the most appropriate answer from the options given below:

  1. (a), (d) only
  2. (a), (b), (d) only
  3. (b), (c), (d) only
  4. (a), (c), (d) only
Out of syllabusNEET (UG) 2022
3

Match List-I with List-II : Choose the correct answer from the options given below :

  1. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
  2. (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
  3. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
  4. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
Out of syllabusNEET (UG) 2022 (Phase 2)
4

Match List-I with List-II : Choose the correct answer from the options given below.

  1. (a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
  2. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
  3. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
  4. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
Out of syllabusNEET (UG) 2021
5

Which of the following is not correct about carbon monoxide?

  1. It reduces oxygen carrying ability of blood.
  2. The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.
  3. It is produced due to incomplete combustion.
  4. It forms carboxyhaemoglobin.
NEET (UG) 2020
6

Among the following, the one that is not a green house gas is :

  1. ozone
  2. sulphur dioxide
  3. nitrous oxide
  4. methane
Out of syllabusNEET (UG) 2019
7

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

  1. N2O5
  2. NO2
  3. N2O
  4. NO
Out of syllabusNEET 2018
8

Which of the following is a sink for CO?

  1. Microorganisms present in the soil
  2. Oceans
  3. Plants
  4. Haemoglobin
Out of syllabusNEET 2017
9

Which one of the following is not a common component of Photochemical smog?

  1. Ozone
  2. Acrolein
  3. Peroxyacetyl nitrate
  4. Chlorofluorocarbons
Out of syllabusAIPMT 2014
10

Which one of the following statements is not true?

  1. Clean water would have a BOD value of 5 ppm.
  2. Fluoride deficiency in drinking water is harmful. Soluble fluoride is often used to bring its concentration up to 1 ppm.
  3. When the pH of rain water is higher than 6.5, it is called acid rain.
  4. Dissolved Oxygen (DO) in cold water can reach a concentration up to 10 ppm.
Out of syllabusNEET 2013 (Karnataka)
11

Which one of the following statements regarding photochemical smog is not correct?

  1. Carbon monoxide does not play any role in photochemical smog formation.
  2. Photochemical smog is an oxidising agent in character.
  3. Photochemical smog is formed through photochemical reaction involving solar energy.
  4. Photochemical smog does not cause irritation in eyes and throat.
Out of syllabusAIPMT 2012 (Prelims)

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