Quiz-17
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.
Radiation
Main components of photochemical smog are ozone, peroxyacetyl nitrate, aldehydes, etc.
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
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
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
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
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
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
A-Discharge corona, B-Negatively charged wire, C-Dust particle, D-Collection plate grounded.
In the 1990s, Delhi ranked 4th among the 41 most polluted cities in the world
