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Water pipes are produced from
The oxidation number of iron, in its free state is
How many isomers can be formed from a compound with molecular formula C\(_5\)H\(_{12}\) ?
Tetraoxosulphate (VI) acid is considered as a heavy chemical because
Which of the following compounds is formed by the oxidation of ethanol?
Which of the following is a monomer of polythene?
The main function of limestone in the blast furnace during the extraction of iron is to
An atom of an element in the ground state contains 8 valence electrons. The element is considered as a
When an element exists in two or more forms in the same physical state, it exhibits
How many covalent bonds are formed by Nitrogen?
The metallic bonding in aluminium is strong because of large number of
The hardest form of carbon is
When s and p block elements react, the bond formed is
The electron configuration of \(_{29}\) Cu is
Pure water contaminated with quicklime will have a pH of
\(_8\)X\(^{2-}\) and \(_{10}\)Y are
Pairs of outermost shell electrons which are not used in bonding are
The volume of 22g of CO\(_2\) at stp is equivalent to [C =12, O =16, molar volume at stp = 22.4 dm\(^3\) ]
Which of the following conditions are necessary for the preparation of alkanoates from alkanols and alkanoic acid?
A weak acid is one which