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reactivity of f-block elements
How could lipids and proteins form lipoproteins, stable superstructures which can be simply transported in blood? How would a) cholesterol b) esters of cholester
Maximum number of electrons present in N shell is: (1) 18 (2) 32 (3) 2 (4) 8 Ans: 32
Q. Illustrate Classification of Matter? Pure Substances In order to understand what a pure substance is, you must think of it on an atomic level. Elements and compounds
Q. Describe about temperature scales? The temperature of an entity explains how hot or cold the object is relative to other objects. Scientists utilize two temperature scales-t
A gas contains 350 ppm of H 2 S in CO 2 at 72°F and 1.53 atm pressure. If the gas is liquified, what is the weight fraction H 2 S? You are asked to make up a laboratory soluti
Q. What are the properties of water? Ans. Water is a colorless, odorless, tasteless liquid with a melting and freezing point of 0 o C and a boiling point of 100 o C at 1 a
The total number of valence electrons in 4.2 gm N - 3 of ion is ( N A is the Avogadro's number): (1) 1.6N A (2) 3.2N A
A completely filled d -orbital ( d 10 ): (1) Spherically symmetrical (2) Has octahedral symmetry (3) Has tetrahedral symmetry (4) Depends on the atom Ans: Spherical
Methods yielding mixture of amines - Hofmann's method Hofmann's method: The mixture of amines (1°, 2° and 3°) is made by the alkylation of ammonia along with alkyl halides.
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