Match the following classes of chemicals with their descriptions: (Chemical Class) (Description)(a) Allergens (i) Chemicals that alter of damage the genetic material (DNA) cells(b) Mutagens (ii) Substances that activate the immune system(c) Carcinogens (iii) Chemicals that specifically cause abnormalities during embryonics growth and development(d) Teratogens (iv) Substances that cause invasive out of control cell growth resulting in malignant tumors. Select appropriate option from those given below–

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The UGC NET General Paper on Teaching & Research Aptitude is an exam designed to test the teaching and research skills of Indian teachers to determine their eligibility for college lectureship.