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. Terracing is done in
  •  Desert areas
  •  Hilly areas
  •  Dry areas
  •  Plain areas
Terrace farming is widely practiced in hilly areas.

Q2.Which of the following toxic materials was present in Minamata bay of japan?
  •  Cd
  •  Pb
  •  Mg
  •  Hg
Minamata bay of Japan was polluted by mercury (Hg), which resulted into Minamata disease.

Q3.  In an area where DDT had been used extensively, the population of birds declined significantly because
  •   Snake were feeding exclusively on birds
  •  Many of the birds eggs laid did not hatch
  •  Bird stopped laying eggs
  •  None of the above
In an area where DDT had been used extensively, the population of birds declined significantly because many of the birds eggs laid, did not hatch

Q4. Catalytic converters I. These are fitted into automobiles for reducing emission of poisonous gases like NO_2 and CO II. They have expensive metals like platinum, palladium and rhodium as catalysts III. As the exhaust emission passes through catalytic converter nitric oxide splits into nitrogen and oxygen: carbon monoxide is oxidized to carbon dioxide and unburnt hydrocarbons get burnt completely into CO_2 and H_2 O IV. Motor vehicles fitted with catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalyst Which of the statements given above are correct about catalytic converters?
  •  I, II and III
  •  II, III and IV
  •  I, III and IV
  •  I, II, III and IV
Catalytic converters are fitted into automobiles for reducing emission of poisonous gases like NO_2 and CO. Catalytic converters have costly metals like platinum, palladium and rhodium as catalysts. Exhaust gases first pass through catalytic converter Hydrocarbons which have been left unburnt are oxidised to produce carbon dioxide and water. Carbon monoxide is also oxidised to form carbon dioxide. However, nitrogen oxide splits up to form nitrogen gas. Auto mobiles fitted with catalytic converter should not use leaded petrol because lead inactivates the catalyst of the converter

Q5.Nutrient enrichment of a lake will cause
  •  Eutrophication
  •  Satisfaction
  •  Biomagnifications
  •  Bioaccumulation
 Eutrophication is increased in amount of nutrients in water due to detergents, pesticides, etc, and it leads to organic loading, depletion of O_2, etc.

Q6. Green house effect is the cumulative result of the influences of certain gases. Identify the gas, which is not involved in this influence?
  •  Methane
  •  Cholorofluorocarbons
  •  Nitrogen
  •  Carbon dioxide
‘Green house effect’ refers to selective energy absorption by green house gases(e.g., carbon dioxide, methane , nitrogen oxide, chlorofluorocarbons and water vapour) in the atmosphere, which allows short wavelength energy to pass through but absorbs longer wavelength and reflect heat back to earth.

Q7.Which of the following are correctly matched? I. Arsenic poisoning - Black foot disease II. Secondary effluent treatment - Biological process III. Pyrolysis - Solid soil waste disposal IV. Tubifex - Water pollution indicator V. Biomagnification - Degradable pollutants
  •  I,II,III and V
  •  I,III,IV and V
  •   II,III,IV and V
  •  I,II,III and IV
Biomagnification or biological amplification is the passing of non-degradable pollutants like pesticides (DDT), etc, into the food chain and increase in amount per unit weight of organisms with the rise in trophic level due to accumulation in the body.

Q8.Ozone depletion in stratosphere shall result in
  •  Forest fires
  •  Green house effect
  •  Global warming
  •  Increased incidence of skin cancer
Ozone depletion in stratosphere shall result in increased incidence of skin cancer and cataract.

Q9.Which method is used for the removal of sulphur dioxide and ammonia from the polluted air?
  •  Electrostatic precipitator
  •  Wet scrubbers
  •  Gravitational method
  •  Absorption
A scrubber can remove gases like sulphur dioxide. In a scrubber, the exhaust is passed through a spray of water or lime

Q10. In India,Jhum cultivation is practiced mainly in
  •  North eastern states of india
  •  Western ghats of india
  •  Gangetic plains
  •  Deccan plateau
North eastern states of India. Jhum cultivation, commonly called as slash and burn agriculture in the north eastern states of India, has also contributed to deforestation. In jhum cultivation, the farmers cut down the trees of the forest and burn the plant remains. The ash is used as a fertiliser and the land is then used for farming or cattle grazing. After cultivation, the area is left for several years so as to allow its recovery. The farmers then move on to other areas and repeat this process

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