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(A): Efficiency of the reverberatary fur...

(A): Efficiency of the reverberatary furnace is less
(R): The waste gases formed in the fumace reactions leave the furnace through chimney.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

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The correct Answer is:
A
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The electrolysis of acetate solution produces ethane according to reaction: 2CH_3COO^(-) to C_2H_6(g) + 2CO_(2)(g) + 2e^(-) . The current efficiency of the process is 80% . What volume of gases would be produced at 27^@C and 740 torr. If the current of 0.5 amp is passes through the solution for 96.45 min ? (V_(C_2H_6) + V_(CO_2)) =?

Which of the following is the outlet through which fuel gases go out the furnace ?

There is a pair of bean-shaped organs P in the human body towards the back just above the waist. A waste product Q formed by the decomposition of unused proteins in liver is brought into organ P through blood by an artery R The numerous tiny filters S present in organ P clean the dirty blood goes into circulation through a vein T . The waste substance Q other waste salts and excess water form a yellowish liquid U which goes from organ P into a bag like structure V through two tubes W This liquid is then thrown out of the body through a tube X .Name (1) artery R and (2) vein T

There is a pair of bean-shaped organs P in the human body towards the back just above the waist A waste product Q formed by the decomposition of unused proteins in liver is brought into organ P through blood by an artery R The numerous tiny filters S present in organ P clean the dirty blood goes into circulation through a vein T The waste substance Q other waste salts and excess water form a yellowish liquid U which goes from organ P into a bag like structure V through two tubes W.(i)This liquid is then thrown out of the body through a tube X (ii) structure V

For a spontaneous reaction, the free energy change must be negative. DeltaG=DeltaH-TDeltaS is the enthalpy change during the reaction. T is absolute temperature, and AS is the change in entropy during the reaction. Consider a reaction such as the formation ofan oxide . M+O_(2) MO Dloxygen is used wp in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids consequently gases have a higher entropy than liquids and solids, in this reaction (entropy or randomness) decreases, hence is negative. Thus, the temperature is raised the DeltaS becomes more negative. Since, TDeltaS is subtracted in the equation, then SG becomes less negative. Thus, the free energy changes increases with the increase in temperature. The free energy changes that occur when one mole of common reactant in this case dioxygen) is we may e plotted graphically against temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. Free energy change of Hg and Mg for the convertion to oxides the slope of DeltaG . T has been changed above the boiling points of the given metal because

For a spontaneous reaction, the free energy change must be negative. DeltaG=DeltaH-TDeltaS is the enthalpy change during the reaction. T is absolute temperature, and AS is the change in entropy during the reaction. Consider a reaction such as the formation ofan oxide . M+O_(2) MO Dloxygen is used wp in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids consequently gases have a higher entropy than liquids and solids, in this reaction (entropy or randomness) decreases, hence is negative. Thus, the temperature is raised the DeltaS becomes more negative. Since, TDeltaS is subtracted in the equation, then SG becomes less negative. Thus, the free energy changes increases with the increase in temperature. The free energy changes that occur when one mole of common reactant in this case dioxygen) is we may e plotted graphically against temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. As per the Ellingham diagram of oxides which of the following conclusion is true?

For a spontaneous reaction, the free energy change must be negative. DeltaG=DeltaH-TDelaS is the enthalpy change during the reaction. T is absolute temperature, and AS is the change in entropy during the reaction. Consider a reaction such as the formation ofan oxide . M+O_(2) MO Dloxygen is used wp in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids consequently gases have a higher entropy than liquids and solids, in this reaction (entropy or randomness) decreases, hence is negative. Thus, the temperature is raised the DeltaS becomes more negative. Since, TDeltaS is subtracted in the equation, then SG becomes less negative. Thus, the free energy changes increases with the increase in temperature. The free energy changes that occur when one mole of common reactant in this case dioxygen) is we may e plotted graphically against temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. For the conversion of Ca(s) to CaO(s) which of the following represent the DeltaG vs T :

For a spontaneous reaction, the free energy change must be negative. DeltaG=DeltaH-TDeltaS is the enthalpy change during the reaction. T is absolute temperature, and AS is the change in entropy during the reaction. Consider a reaction such as the formation ofan oxide . M+O_(2) MO Dloxygen is used wp in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids consequently gases have a higher entropy than liquids and solids, in this reaction (entropy or randomness) decreases, hence is negative. Thus, the temperature is raised the DeltaS becomes more negative. Since, TDeltaS is subtracted in the equation, then SG becomes less negative. Thus, the free energy changes increases with the increase in temperature. The free energy changes that occur when one mole of common reactant in this case dioxygen) is we may e plotted graphically against temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. Which of the following elements can be prepared by heating the oxide above 400^(@)C ?

There is a pair of bean-shaped organs 'P' in the human body towards the back, just above the waist. A waste product 'Q' formed by the decomposition of unused proteins in liver is brought into organ 'P' through blood by an artery 'R'. The numerous tiny. filters 'S' present in organ 'P' clean the dirty blood goes into circulation through a vein 'T'. The waste substance 'Q' other waste salts and excess water form a yellowish liquid 'U' which goes from organ 'P' into a bag like structure 'V' through two tubes 'W' and 'X'. This liquid is then thrown out of the body through a tube 'X'. What is (i) organ P and (ii) waste substance Q ?

There is a pair of bean-shaped organs 'P' in the human body towards the back, just above the waist. A waste product 'Q formed by the decomposition of unused proteins in liver is brought into organ 'P' through blood by an artery "R". The numerous tiny filters 'S' present in organ 'P' clean the dirty blood goes into circulation through a vein ‘T'. The waste substance 'Q' and other waste salts and excess water form a yellowish liquid 'U' which goes from organ 'P' into a bag like structure 'V' through two tubes 'W'. This liquid is then thrown out of the body through a tube 'X'. What is (i) organ P and (ii) waste substance Q.

AAKASH SERIES-PRINCIPLES OF METALLURGY-Objective exercise -4 (Assertion (A) & Reason (R) type questions :
  1. (A) Reduction of a metal oxide is easier if the metal formed is in liq...

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  2. (A): Efficiency of the reverberatary furnace is less (R): The waste ...

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  3. (A): In the smelting of copper pyrites in blast furnace, Cu2 S formed ...

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  4. (A): Iron pyrate is used in the extraction of iron releases pollutants...

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  5. (A) Cassiterite mineral is concentrated by electromagnetic method ...

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  6. (A) Leaching is chemical method used to ore benefication process (R...

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  7. (A): In aluminothermic process, Al reduction increases the heat of the...

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  8. (A) : Sulphide ores are concentrated by froth floatation process. (R...

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  9. (A): Platinum and gold occur in native state in nature. (R): Platinu...

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  10. (A) Levigation is used for the separation of oxide ores from impuriti...

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  11. (A) Calamine is a mineral of calcium (R) Calamine is chemically a s...

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  12. Carnallite is an example of

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  13. (A) Froath floatation process involves adsorption (R) Pure ore is p...

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  14. (A) Wolframite impurities are separated from cassiterite by electrom...

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  15. (A) In smelting, roasted ore is heated with powdered coke in presenc...

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  16. (A) Leaching is the process of converting the ore into oxide and the...

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  17. (A) Aluminium metal is used as a reducing agent in thermite welding ...

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  18. (A) Lead, tin and bismuth are purified by liquation method . (R) Lead...

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  19. (A) Pin oil is fused as a foaming agent in froth floatation process ...

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  20. (A) Aluminium metal can be extracted by the electrolysis of aqueous al...

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