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. Relative Biological Effectiveness (RBE) usually refers to the damage caused by
  •  Low temperature
  •  High temperature
  •  Radiation
  •  Pollution

Q2. The main component of photochemical smog is
  •  SO2
  •  PAN
  •  O3
  •  Both (b) and (c)
Main components of photochemical smog are ozone, peroxyacetyl nitrate, aldehydes, etc.

Q3. Montreal protocol, which calls for appropriate action to protect the ozone layer from human activities was passed in the year
  •  1986
  •  1987
  •  1988
  •  1985
In 1987, twenty seven industrialized countries signed the Montreal protocol for reduction and release of CFCs(chlorofluorocarbons)depleting ozone layer, into the atmosphere. It was followed by increasingly stringent amendments in London in 1990 and in Copenhagen in 1992.

Q4. Increasing skin cancer and damaged DNA in living organisms results due to
  •  Ozone depletion
  •  Acid rain
  •  Greenhouse effect
  •  Global warming
Increasing skin cancer and damages DNA and proteins in living organisms are the result of ozone depletion UV-rays damages DNA and proteins of living organisms causing mutation. It causes skin ageing, skin cell damage and skin cancers. UV-rays is absorbed by human eye and at high does it causes inflammation of cornea. This is called snow-blindness cataract

Q5. Which of the following health problem originates due to the inhalation of fine particulate matter?
  •  Irritation
  •  Inflammation
  •  Damage of lungs and premature deaths
  •  Eunuchoidism
Fine particulates can be inhaled deep into the lungs and can cause breathing and respiratory symptoms, irritation, inflammations and damage to the lungs and premature deaths. failure of testosterone secretion causes eunuchoidism

Q6. Sound becomes a hazardous noise pollution if its level exceeds
  •  30dB
  •  80dB
  •  120dB
  •  150dB
80 dB. Noise is defined as undesired high level of sound. It is a physical form of pollution that affects the receiver directly. Noise or pollutant sound has a value of 80 dB and above

Q7. Shell of egg in bird becomes thin (not properly formed) due to the pollution of pesticides. This occurs due to disturbed
  •  Calcium metabolism
  •  Phosphorous metabolism
  •  Sodium metabolism
  •  Potassium metabolism
Calcium metabolism in birds in disturbed due to the pollution of pesticides which results in thinning of eggshell. This leads to decline in bird population

Q8. Which of the following are the example of industrial solid wastes?
  •  Scraps
  •  Flyash
  •  Both (a) and (b)
  •  irreparable computers
Scarps and flyash both. Solid wastes are discarded solid materials which are produced due to various human activities. Solid wastes can be biodegradable, recyclable or non-biodegradable Solid wastes can be of the following types (i) Municipal Solid Waste Wastes from homes, offices, schools, hospitals etc. (ii) Industrial Wastes The wastes like scraps, flyash, etc., generated by industries (iii) Hospital Wastes Hazardous wastes containing disinfectants and other harmful chemicals generated by hospitals (iv) Electronic Wastes These are the damaged electronic goods and irreparable computers

Q9. The below diagram shows electrostatic precipitator. Identify and select the correct option

  •  A-Dust particle, B-Negatively charged wire, C-Discharge corona, D-Collection plate grounded
  •  A-Discharge corona, B-Collection plate grounded, C-Dust particle, D-Negatively charged wire
  •  A-Discharge corona, B-Negatively charged wire, C-Dust particle, D-Collection plate grounded
  •  A-Discharge corona, B-Dust particle, C-Negatively charged wire, D-Collection plate grounded
A-Discharge corona, B-Negatively charged wire, C-Dust particle, D-Collection plate grounded.

Q10. In the 1990s, Delhi ranked …….. among the 41 most polluted cities in the world
  •  4th
  •  5th
  •  6th
  •  7th
In the 1990s, Delhi ranked 4th among the 41 most polluted cities in the world

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