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Chemistry
List of top Chemistry Questions
In
$S_{N^1}$
reaction, . the recimisation takes place due to
Chemistry
p -Block Elements
In pyrophosphoric acid,
$H_4P_2O_7$
, number of
$?$
- and
$d?-p?$
bonds respectively are
Chemistry
p -Block Elements
In Rosenmund's reaction
Chemistry
Preparation
In potash alum, potassium and aluminium are present as
Chemistry
p -Block Elements
In oxidation of oxalic acid by KMn
$O_{4}$
, the colour of KMn
$O_{4}$
disappears slowly at the start of reaction but disappears very fast afterwards. This is an example of
Chemistry
Surface Chemistry
In order to obtain acetaldehyde from calcium acetate, it should be heated with :
Chemistry
Aldehydes, Ketones and Carboxylic Acids
In order to prepare acetone from acetyl chloride which of the following reagents can be used ?
Chemistry
Aldehydes, Ketones and Carboxylic Acids
In nucleotide of a nucleic acids, the sequence is
Chemistry
Biomolecules
In
$NaCl$
structure,
Chemistry
The solid state
In metallurgy, flux is a substance used to convert
Chemistry
General Principles and Processes of Isolation of Elements
In metallurgical processes the flux used for removing acidic impurities is
Chemistry
General Principles and Processes of Isolation of Elements
In lake test of
$ {Al^{3+}}$
ion, there is formation of coloured floating. It is due to :
Chemistry
p -Block Elements
In h.c.p arrangement, the co-ordination number is
Chemistry
The solid state
In general, the melting and boiling points of transition metals
Chemistry
d -and f -Block Elements
In ferrous ammonium sulphate oxidation number of Fe is
Chemistry
Redox reactions
In fibrous proteins, polypeptide chains are held together by
Chemistry
Biomolecules
In face centred cubic unit cell, edge length is
Chemistry
The solid state
In fcc arrangement of A and B atoms, where A atoms are at the corners of the unit cell, B atoms at the face centres. Two atoms are missing from two corners in each unit cell, then the simplest formula of the compound is
Chemistry
The solid state
In electrorefining the impure metal is made
Chemistry
General Principles and Processes of Isolation of Elements
In electrometallurgy of aluminium, what will happen if graphite rods are not used as anode and are replaced by some other metal?
Chemistry
General Principles and Processes of Isolation of Elements
In electrochemical corrosion of metals, the metal undergoing corrosion
Chemistry
Electrochemistry
In electrolysis of dilute
$H_2SO_4$
, what is liberated at anode ?
Chemistry
Electrochemistry
In electro-refining of metal the impure metal is made the anode and a strip of pure metal the cathode during the electrolysis of an aqueous solution of a complex metal salt. This method cannot be used for refining of
Chemistry
General Principles and Processes of Isolation of Elements
In diamond, each carbon atom is bonded to four other carbon atoms tetrahedrally. The number of carbon atoms per unit cell is
Chemistry
The solid state
In diborane, banana bond is formed between
Chemistry
p -Block Elements
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