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Q. Name the harmful microorganisms found in food? The harmful microorganisms found in food are Salmonella species, E. coli, A. flavus, C. botulimum and S. aureus.
Antimicrobials: These are the chemical substances employed to cure infections because of micro-organisms. These are as well known as microbes. Any creature that causes disease
Define the General Arrangement of Physical Elements of a Galvanic cell? The general arrangement of the physical elements of a galvanic cell is therefore Terminal - electron
The K sp of the phosphate fertilizer CaHPO 4 .2 H2O is 2.7 x 10 -7 at 25 o C. What is the molar concentration of a saturated solution? What mass of this compound will dissolve
An element has electronic configuration 2, 8, 18, 1. If its atomic weight is 63, then how many neutrons will be present in its nucleus: (1) 30 (2) 32 (3) 34
In the study of mechanisms of various chemical reactions, Deuterium and Tritium are used as tracers.
Tests of chloroform (a) It gives isocyanide test (Carbylamine test). (b) It makes silver mirror with Tollen's reagent. (c) Pure Chloroform does not give white precipitate
Average rate of a reaction is defined as the rate of change of concentration per unit time. It is calculated by dividing the total change in concentration of any one of the react
Electrophilic substitutions reactions: Electrophilic substitution includes the attack by an electrophile. It is denoted as S E ( S denotes substitution and E denotes elct
how many elements are discovered
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