Question

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१.द्वंदवाद

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Answer 1

Answer:

Substitution reaction, any of a class of chemical reactions in which an atom, ion, or group of atoms or ions in a molecule is replaced by another atom, ion, or group.

Explanation:

Answer 2

(biology) An achromosomal cell resulting from aberrant cell division, containing RNA and protein but little or no chromosomal DNA.