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Starch and its derivatives
Starch is a white amorphous substance along with no taste or smell. While heated to a temperature among 200-250oC it changes into dextrin. At larger temperature charring happens. While boiled and dilute acid, starch finally yields glucose.
Both of the n and n1 are unknown, but n is believed to be greater as compared to n1.
While reacted with enzyme, diastase, it gives maltose.
The number of unpaired electrons in 1s 2 2s 2 2p 4 is: (1) 4 (2) 2 (3) 0 (4) 1 Ans: 2
Azimuthal quantum number for last electron of Na atom is: (1) 1 (2) 2 (3) 3 (4) 0 Ans: 0
explain vsepr thheory
A covered glass tube contains 2.25g of copper and 3.32g of sulphur. The mass of the tube as well as its contents is 18.48 g. Upon heating a chemical reaction forms copper(II) sulph
The equilibrium cell potential of the galvanic cell Pt | H 2 (g, f =1 bar) HCl (aq, 0.500mol kg -1 ) | Cl 2 (g, f =1 bar) | Pt is found to be E cell, eq = 1.410V at 298.15
Write chemical tests to distinguish among: a) Phenol and Benzoic acid b) Propanal and propanone c) Formic acid and Acetic acid
Q. What are the Physical Properties of Nitric Acid? Ans. Nitric acid (HNO 3 ) may be prepared by heating sodium nitrate with sulfuric acid: NaNO 3 + H 2 SO 4 --> HNO
What are laws of crystallography? How does it help in study of crystal structure?
properties of lanthanides
outline the structure of the isomeric alkyl halides with molecular formula c4h9cl
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