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The total number of electrons present in all the p-orbitals of bromine are:
(1) Five
(2) Eighteen
(3) Seventeen
(4) Thirty five
Ans: Seventeen
Analytical tests of glycerol - Acrolein and Dunstan test (a) Acrolein test: while glycerol is heated with an extremely offensive smell is generated due to formation of acrolei
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
Define Colligative Properties of A Dilute Solution? The colligative properties of a solution are usually considered to be: 1. Freezing-point depression: the decrease in the
Discuss about the different types of stones used for the construction and how to determine the good quality stone?
Which one pair of atoms or ions will have same configuration: (1) F + ans Ne (2) Li + He - (3) C l - and Ar (4) Na and K Ans: Cl - an
Q. Define Conjugate acid-base pair and buffer? Buffers are substances that resist changes in pH. To "balance pH" means to buffer. Weak acids and bases make good buffers.
what are the factors affecting the acidity of the aromatic carboxylic acids ?
For a given value of quantum number l , the number of allowed values of is given by: (1) l+2 (2) 2l+2 (3) 2l+ 1 (4)
Silicon has 4 electrons in the outermost orbit. In forming the bonds: (1) It gains electrons (2) It loses electrons (3) It shares electrons (4) None of these Ans: I
preparation,properties,merits,demerits
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