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The valency of sulphur in sulphuric acid is:
(1) 2
(2) 4
(3) 6
(4) 8
Ans: 6
Uses of glycol
Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
Explain the following and give one example of each: a. Tranquillizers b. Mordant c. Hybrid rocket propellants
which coating is better for steel. Tin or zinc?
Q. Briefly explain about Alloys? Ans. Pure metals are malleable. Metals that are harder, stronger and less malleable are sometimes required. These characteristics may be a
The order of filling of electrons in the orbitals of an atom will be : (1) 3d, 4s, 4p, 4d, 5s, (2) 4s, 3d, 4p, 5s, 4d (3) 5s, 4p, 3d, 4d, 5s
4 NH3 + 5 O2 --> 4 NO + 6 H2O How many grams of NO are actually produced when 60.02 grams of ammonia are allowed to react with 96.00 grams of oxygen? ((This is a limiting reactant
preperations
convert km to m
IUPAC System of Naming Organic Compounds In the IUPAC (International Union of Pure and Applied Chemistry) system, the name of an organic compound contain three parts that are:
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