Practice 128 Inorganic Chemistry questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.
Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy ?
Q102mediummcqChemistryChemistry
Number of possible isomers for the complex [Co(en)2Cl2]Cl will be: (en = ethylene diamine)
Q103mediummcqChemistryChemistry
Which one of the following molecules has trigonal planar geometry ?
Q104easymcqChemistryChemistry
The variation of the boiling points of the hydrogen halides is in the order HF>HI>HBr>HCl. What explains the higher boiling point of hydrogen fluoride?
Q105mediummcqChemistryChemistry
The mass of carbon anode consumed (giving only carbondioxide) in the production of 270 kg of aluminium metal from bauxite by the Hall process is : (Atomic mass Al = 27)
Q106easymcqChemistryChemistry
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:
Q107mediummcqChemistryChemistry
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
Q108mediummcqChemistryChemistry
Which of the statements given below is incorrect?
Q109mediummcqChemistryChemistry
Strong reducing behaviour of H3PO2 is due to:
Q110mediummcqChemistryChemistry
On heating which of the following releases CO2 most easily?
Q111mediummcqChemistryChemistry
Gadolinium belongs to the 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?
Q112easymcqChemistryChemistry
The reason for lanthanoid contraction is:
Q113easymcqChemistryChemistry
The reaction of aqueous KMnO4 with H2O2 in acidic conditions gives:
Q114easymcqChemistryChemistry
In acidic medium, H2O2 changes Cr2O72− to CrO5 which has two (–O–O–) bonds. The oxidation state of Cr in CrO5 is:
Q115easymcqChemistryChemistry
(a) H2O2+O3→H2O+2O2 (b) H2O2+Ag2O→2Ag+H2O+O2 The role of hydrogen peroxide in the above reactions is respectively:
Q116easymcqChemistryChemistry
The pair of compounds that can exist together is:
Q117mediummcqChemistryChemistry
Sulphur trioxide can be obtained by which of the following reaction:
Q118easymcqChemistryChemistry
The name of complex ion, [Fe(CN)6]3− is:
Q119mediummcqChemistryChemistry
Which one of the alkali metals forms only the normal oxide, M2O on heating in air?
Q120mediummcqChemistryChemistry
When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from:
Q121mediummcqChemistryChemistry
Which of the statements is NOT true?
Q122mediummcqChemistryChemistry
Identify the wrong statement in the following:
Q123mediummcqChemistryChemistry
Which of the following species contains three bond pairs and one lone pair around the central atom?
Q124mediummcqChemistryChemistry
Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of:
Q125mediummcqChemistryChemistry
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:
Q126mediummcqChemistryChemistry
The pair of species with the same bond order is:
Q127mediummcqChemistryChemistry
Which of the following statements is NOT valid for oxoacids of phosphorus?
Q128mediummcqChemistryChemistry
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?
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