Inorganic Chemistry
INORGANIC CHEMISTRY TEST FOR M.SC, B.SC AND UGC NET AND SLAT PREPARATION AND PRACTICE MATERIALS
Questions
Liquation method is based on the principle of
- difference in magnetic properties
- difference in density
- difference in melting point
- difference in boiling point
The Ellingham diagram cannot tell
- about the speed of reaction
- about the feasibility of a reaction
- about which substance is a better reducing agent
- about the thermodynamic concept of a reaction
Mond's process is used for the refining of
- nickel
- cobalt
- copper
- iron
Chromatography is based on the principle of
- difference in density
- difference in absorption
- difference in mass
- difference in adsorption
The reduction of metal oxide is easy when the metal formed is liquid because
- of decrsase in enthalpy
- of decrease in entropy
- of increase in enthalpy
- of increase in entropy
The potential difference between the fixed layer and the diffused layer of opposite charges is called
- electrode potential
- e.m.f.
- zeta potential
- reduction potential
The process of conversion of precipitates into the colloidal solution is called
- dialysis
- dissolution
- peptization
- electrophoresis
To speed up the process of ultrafiltration
- high temperature is required
- pressure or suction is applied
- high temperature and high pressure is applied
- more volume has to be taken
Which of the following does not show tyndall effect?
- Colloidal solution
- True solution
- Suspension
- None of the above
An Isochore is a graph which is plotted at
- constant pressure
- constant temperature
- constant volume
- not any constant parameter
The copper matte contains
- cuprous oxide and iron oxide
- Cu and Fe
- copper sulphide and iron sulphide
- copper sulphide and zink sulphide
Entropy means
- disorder
- heat
- free energy
- enthalpy
Free energy charge is
- inversely related to rate constant
- directly related to rate constant
- directly related to negative value of rate constant
- directly related to minus log of rate constant
In Van Arkel method, the following impurities are removed
- oxygen and sulphur
- oxygen and nitrogen
- sulphur and chlorine
- Zr and Ti
In Ellingham diagram, the temperature range for the feasibility of a reaction is indicated by
- the increase in slope of the curve
- the decrease in slope of the curve
- the point of intersection of the curves
- x-axis of the curve
In Van Arkel method, the metal is heated with
- bromine
- chlorine
- carbon
- iodine
In the process of extraction of gold and silver, the reducing agent used is
- cyano compound
- zinc
- CO
- C
What is the process of reduction of alumina using carbon called?
- Mond's process
- Van Arkel method
- Hydrometallurgy
- Hall-Heroult process
Refining is the method of
- purification of ore
- purification of metal
- reduction of metal oxide
- conversion of sulphide into oxide
Magnesium metal is not used for the reduction of alumina because
- it is thermodynamically not feasible
- the temperature requirement is high
- magnesium is not a good reducing agent
- it is evident from Ellingham diagram
In ester hydrolysis, as the reaction proceeds further, the rate of reaction increases
- on increase in temperature
- on increase in pressure
- due to decrease in conc. of ester
- due to increase in the conc. of carboxylic acid
The railway sleepers are made up of
- cast iron
- pig iron
- wrought iron
- nickel steel
Which of the following is the best reducing agent?
- Lithium
- Sodium
- Potassium
- Magnesium
The change in slope in the Ellingham diagram indicates
- change in phase
- ease of reduction
- increase in entropy
- decrease in free energy
Ellingham diagram tells that
- how easily a substance can be reduced
- how easily a substance can be oxidised
- how easily a substance can oxidise other substance
- none of the above