Chemistry-
General
Easy
Question
Statement-1 :Lead, tin and bismuth are purified by liquation method.
Statement-2 : Lead, tin and bismuth have low m.p. as compared to impurities
- Statement-1 is true, Statement-2 is true and Statement-2 is correct explanation for Statement-1.
- Statement-1 is true, Statement-2 is true and Statement-2 is not correct explanation for Statement-1.
- Statement-1 is true, Statement-2 is false.
- Statement-1 is false, Statement-2 is true.
The correct answer is: Statement-1 is true, Statement-2 is true and Statement-2 is correct explanation for Statement-1.
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chemistry-
Statement-1 :In the extraction of Ag the complex Na[Ag(CN)2] is reacted with Zn
Statement-2 :Zn is transition metal according to electronic theory
Statement-1 :In the extraction of Ag the complex Na[Ag(CN)2] is reacted with Zn
Statement-2 :Zn is transition metal according to electronic theory
chemistry-General
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Statement-1 : During calcination the ore is heated well below its melting point in the limited supply of air or absence of air.
Statement-2 : The process of calcination is carried out for sulphide ores.
Statement-1 : During calcination the ore is heated well below its melting point in the limited supply of air or absence of air.
Statement-2 : The process of calcination is carried out for sulphide ores.
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The iron obtained from the blast furnace is called :
The iron obtained from the blast furnace is called :
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The process of bringing the metal or its ore into solution by the action of a suitable chemical reagent followed by extraction of the metal either by electrolysis or by a suitable precipitating agent i.e. more electropositive metal is called
The process of bringing the metal or its ore into solution by the action of a suitable chemical reagent followed by extraction of the metal either by electrolysis or by a suitable precipitating agent i.e. more electropositive metal is called
chemistry-General
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In the froth floatation process for the purification of minerals the particles float because :
In the froth floatation process for the purification of minerals the particles float because :
chemistry-General
maths-
Statement‐I: The function is an odd function and is an even function.
Statement‐II: For a differentiable function if is an even function then is an odd function.
Statement‐I: The function is an odd function and is an even function.
Statement‐II: For a differentiable function if is an even function then is an odd function.
maths-General
maths-
Statement‐I::
Statement‐II : a
Statement‐I::
Statement‐II : a
maths-General
maths-
The value of equals:
The value of equals:
maths-General
maths-
is equal to‐
is equal to‐
maths-General
maths-
equals‐
equals‐
maths-General
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If , where , then Limitx has the value
If , where , then Limitx has the value
maths-General
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The equation of the directrix of the parabola
The equation of the directrix of the parabola
maths-General
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The equation of the common tangent touching the circle and the parabola above the ‐axis is:
The equation of the common tangent touching the circle and the parabola above the ‐axis is:
Maths-General
Maths-
If the line x‐1 =0 is the directrix of the parabola , then one of the values of is :
If the line x‐1 =0 is the directrix of the parabola , then one of the values of is :
Maths-General