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ENVIRONMENTAL ISSUES QUIZ-1

Dear Readers,

NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions.
About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus.
Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. 



Q1. CO_2,CH_4,N_2 O and CFCsare called green house gases because they absorb and emit
  •  UV-rays
  •  Heat rays
  •  X-rays
  •  Gamma rays
Solution
The gases responsible for green-house effect are CO_2,CH_4,N_2 O,CFC_s, etc. the earth’s atmosphere with high concentration of green house gases is transparent to incoming short wave solar radiations but absorbs outgoing longwave infra-red radiations, particularly earth’s thermal radiations (heat-rays), trapping heat near the earth’s surface. In this way, the earth’s atmosphere works very much like a green house by warming the interior.

Q2.Which of the following is a secondary air pollution?
  •  Hydrocarbons
  •  Smog
  •  Particulate matter
  •  Automobile exhausts
Solution
Smog secondary pollutants are formed by reactions amongst the primary pollutants. They are often more harmful than primary pollutants

Q3.  Peroxy Acetyl Nitrate, a class of hazardous air pollutants, stems from I. O_2 II. SO_x III. NO_x IV. HC
  •   I and III
  •  II and III
  •  III and IV
  •  II and IV
Solution
Peroxyacetylnitrates (PAN) is a secondary pollutant, which is formed by oxides of nitrates and hydrocarbons

Q4. Which of the following is not a greenhouse gas?
  •  Water vapour
  •  Carbon monoxide
  •  Methane
  •  Oxygen
Solution
Oxygen is not a green house gas. The main gases responsible for green house effect are CO_2,CH_4,CFC_s and N_2 O.

Q5.Rise in temperature leads to deleterious changes in environment resulting in odd climatic changes called
  •  Global Warming
  •  El Nino effect
  •  La Nino effect
  •  Greenhouse effect
Solution
 The temperature of the earth has increased by 0.6℃ in last three decades, which will lead to changes in precipitation patterns. Rise in temperature leads to deleterious changes in environment resulting in odd climatic changes called El Nino effect. The rise in temperature will lead to the increased melting of polar ice caps which will cause the rise in sea level and many coastal areas will be submerged

Q6. World most problematic aquatic weed is
  •  Azolla
  •  Wolffia
  •  Eichhornia
  •  Trapa
Solution
Bad ozone is formed in troposphere. It is harmful to plants and animals. Good ozone is formed in stratosphere and absorbs harmful UV radiation from the sun

Q7.'Bad' ozoneis formed in
  •  Atmosphere
  •  Ionosphere
  •  Stratosphere
  •  Troposphere
Solution
Bad ozone is formed in troposphere. It is harmful to plants and animals. Good ozone is formed in stratosphere and absorbs harmful UV radiation from the sun

Q8.Irrepairable goods, computers and other electronic devices are known as
  •  a-wastes
  •  e-wastes
  •  c-wastes
  •  d-wastes
Solution
Electronic waste (e-waste) describes loosely, discarded surplus, obsolete or broken electrical or electronic devices. Environmental groups claim that the informal processing of e-waste in developing countries cause serious health and pollution problems.

Q9.The below chart shows the sources of water pollution
  •  A-Domestic sewage, B-Thermal (hot) waste water, C-Organic compound, D-Inorganic compounds
  •  A-Chemical sewage, B-Industrial waste water, C-Inorganic compound, D-Organic compounds
  •  A-Industrial sewage, B-Domestic waste water, C-Phenol group, D-Heavy metallic group
  •  A-Sewage, B-Chemical industry waste water, C-Organic compound, D-Inorganic compounds
Solution
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Q10. Maximum Greenhouse gases are released by
  •  india
  •  Britain
  •  USA
  •  France
Solution
According to Holmes et al, (1933), USA is responsible for the largest portion of man made contributions to the green house effect (21%), followed by Russia (14%), European countries (14%), India (4%) and the rest of the world (36%)

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ENVIRONMENTAL ISSUES QUIZ-1
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