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Analysis of oils and fats - Acid value
It points out the amount of free acid present in the oil or fat. It is described as the number of milligrams of KOH needed to neutralize the free acid exists in one gram of the oil or fat. It is ascertained by dissolving a weighed quantity of oil / fat in alcohol & titrating it against a standard solution of KOH by using phenolphthalein like an indicator.
The electronic configuration of calcium ion ( Ca2 + ) is: (1) 1s 1 , 2s 2, 2p 6 , 3s 2 , 3p 6 , 4s 2 (2) 1s 1 , 2s 2 , sp 6 , 3s 2 , 3p 6 , 4s 1
types of antifertility drugs
Which of the following is not isoelectronic : (1) Na + (2) Mg 2+ (3) O 2- (4) Cl - Ans:(d)Cl -
Steam supply for experiments in heat A tin with a press-on lid may be used to make a steam can. Punch two holes in the lid and solder by them one long and one short pip
mention the basic tendency of an atom which makes it to combine with other atoms.
Q. What are ion selective membranes used in electro dialysis of brackish water. Give examples. Ans. Electro dialysis for brackish water: The ion selective membranes are use
why lanthanides and actinides are known as inner transition elements
Explain construction & working of calomel electrode.
Glucose and fructose are epimers so they are differ in their second carbon position and remaining is same so when they react with phenylhydrazeen they give same osazone
Q. What is structural formula and how to write it? Ans. To represent an organic molecule, a structural formula is often used. As a structural formula shows how the atoms i
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