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Q. Crude and Dietary Fibre?
Crude fibre is the organic residue which remains after the food sample has been treated with boiling dilute sulphuric acid, boiling dilute sodium hydroxide solution and alcohol. The crude fibre consists of cellulose together with a little lignin. Crude fibre estimation is of great value in judging the quality of wheat products, particularly flours. High crude fibre foods are low in nutritional value. It also reflects the efficiency of milling and separation of bran from the starchy endosperm. Further, crude fibre is a more direct index of flour purity than ash or colour.
The formation of a co-ordination compound involves reaction between a metal ion and ligands. If the force of attraction of the metal ion with ligands is strong a stable complex may
The nucleus of an element contains 9 protons. Its valency would be : (1) 1 (2) 3 (3) 2 (4) 5 Ans: 1
Classify each reaction and give the name of all the chemical formula involved for each number. 1. Na2CO3(s) + SiO2(s) ? Na2SiO3(l) + CO2(g) 2. 2 Mg(NO3)2(s) ? 2 Mg(NO2)2(s) + O2
A copper tube 1 inch in diameter and 2 feet long is filled with steel balls of 1 inch diameter. The space between the balls is filled with water. The specific gravity of steel is 7
Elimination reactions - Organic Reaction Elimination reactions are generally the opposite of addition reactions and include the removal of the two groups (usually, one being a
Q. Show the chemical properties of Uranium? Uranium is mainly extracted from pitchblende. The concentrated ore (pitchblende, U 3 O 8 ) is washed and then fused with sodium nitr
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molecular weight of orthophosphoric acid is M.Its equivalent weight
why was hydrochloric acid added?
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