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. 5th June is celebrated as
  •  World forest day
  •  World environment day
  •  World red cross day
  •  World food day
5th June is celebrated as world environment day.

Q2. The accelerated ageing of lakes due to sewage and agricultural and industrial waste is called
  •  Nutrient enrichment
  •  Accelerated eutrophication
  •  Biomagnification
  •  None of these
Pollutants like effluents from the industries and sewage speed up this ageing process. This is called accelerated or cultural eutrophication. Hot waste water from electricity-generating units, thermal power plants are important pollutants

Q3. Which of the following statements regarding decomposition is false?
  •  Warm and moist environment favours decomposition
  •  Decomposition rate is slower if detritus is rich in chitin and lignin.
  •  Earthworm is a detritivore
  •  Precipitation of soluble inorganic nutrients into the soil horizon as unavailable salts is called mineralisation
Mineralization is the conversion of organic matter into inorganic matter.

Q4. Amrita Devi Bishnoi wildlife protection award is given to the individuals or communities from
  •  Rural areas
  •  Urban areas
  •  NGOs
  •  Hilly areas
In 1731, a Bishnoi woman, Amrita Devi showed exemplary courage by hugging a tree to prevent its cutting. Government of India has recently instituted the Amrita Devi Bishnoi Wildlife Protection Award for individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife

Q5. The natural phenomenon of keeping earthworm due to presence of certain gases in the atmosphere is called
  •  Global warming
  •  Ozone depletion
  •  Greenhouse effect
  •  El-Nino effect
(c) Greenhouse gases are those gases, which are transparent to solar radiation but retain and partially reflect back long wave heat radiations CFCs,CO2,NO2CH4 are greenhouse gases. The phenomenon of keeping the earth warm due to presence of these gases in the atmosphere is called greenhouse effect

Q6. Flyash is a/an
  •  Insectivorous plant
  •  Light airborne particulate matter
  •  New name of orchid plant
  •  Causal organism of various disease
Fly ash is a light airborne particulate matter. Fly ash is mainly produced by coal based thermal plants. It should be removed through wet method and used in building material. Insectivorous plants are plants, which use insects for NO2 requirement, e.g., Drosera. Orchid plants are epiphytic, which grow on other plants for support only.

Q7. Mercury pollution causes
  •  Black foot disease
  •  Itai-itai disease
  •  Blue-baby syndrome
  •  Minamata disease

Q8. BOD increased by
  •  Algae
  •  Moss
  •  Ferns
  •  Distillated water

Q9. The main cause of pollution is metrocities is
  •  Burning of fossil fuels
  •  Water plants
  •  Domestic products
  •  None of these
Main cause of pollution in metro cities is burning of fossil fuels. It released CO2,CO,SO2,H2S and H2SO4.All these form a strong air pollution matter.

Q10. CFCs are not recommended to be used in refrigerators because they
  •  Increase tempeerature
  •  Deplete Ozone
  •  Affect environment
  •  Affect human body
The ozone layer lies in the stratosphere between 20-26 km above the sea level. The chlorofluorocarbons produce active chlorine radicals in the presence of UV radiation. These active chlorine radicals catalytically destroy ozone layer converting into oxygen. Each chlorine radical can destroy as many as 1000 ozone molecules.

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