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Statement-1: In the coagulation of negatively charged arsenic sulphide soil, the coagulating power decreases in the order, Al3+ > Ba2+ > Na+.
 
Statement-2 : Generally greater the valence of coagulating ion, the  greater is its power of coagulation.
  • a)
    Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.           
  • b)
    Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.           
  • c)
    Statement-1 is True, Statement-2 is False.           
  • d)
    Statement-1 is False, Statement-2 is True
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Statement-1: In the coagulation of negatively charged arsenic sulphide...
Both the statements are correct. this is hardy schulze rule given in ncert chemistry surface chemistry
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Community Answer
Statement-1: In the coagulation of negatively charged arsenic sulphide...
The correct answer is option A
Greater the valency of flocculating ions added, the greater its power to cause precipitation.
According to Hardy-Schulz rule, the coagulation (flocculating) value is inversely proportional to the charge on effective ions.
Hence, smaller the value, larger the power of an ion.
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Read the passage given below and answer the following questions:The amount of moisture that leather adsorbs or loses is determined by temperature, relative humidity, degree of porosity, and the size of the pores. Moisture has great practical significance because its amount affects the durability of leather, and in articles such as shoes, gloves and other garments, the comfort of the wearer. High moisture content accelerates deterioration and promotes mildew action. On the other hand, a minimum amount of moisture is required to keep leather properly lubricated and thus prevent cracking. The study indicates that adsorption of moisture by leather is a multi- molecular process and is accompanied by low enthalpies of adsorption. Further at 75-percent relative humidity, the adsorption is a function of surface area alone. Untanned hide and chrome- tanned leathers have the largest surface areas. The leathers tanned with vegetable tanning materials have smaller surface areas since they are composed of less hide substance and the capillaries are reduced to smaller diameters, in some cases probably completely filled by tanning materials. This process of tanning occurs due to mutual coagulation of positively charged hide with negatively charged tanning material. The result of the study indicated that untanned hide and chrome-tanned leather absorb the most water vapour.In these questions a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices.Assertion (

Read the passage given below and answer the following questions:The amount of moisture that leather adsorbs or loses is determined by temperature, relative humidity, degree of porosity, and the size of the pores. Moisture has great practical significance because its amount affects the durability of leather, and in articles such as shoes, gloves and other garments, the comfort of the wearer. High moisture content accelerates deterioration and promotes mildew action. On the other hand, a minimum amount of moisture is required to keep leather properly lubricated and thus prevent cracking. The study indicates that adsorption of moisture by leather is a multi- molecular process and is accompanied by low enthalpies of adsorption. Further at 75-percent relative humidity, the adsorption is a function of surface area alone. Untanned hide and chrome- tanned leathers have the largest surface areas. The leathers tanned with vegetable tanning materials have smaller surface areas since they are composed of less hide substance and the capillaries are reduced to smaller diameters, in some cases probably completely filled by tanning materials. This process of tanning occurs due to mutual coagulation of positively charged hide with negatively charged tanning material. The result of the study indicated that untanned hide and chrome-tanned leather absorb the most water vapour.In these questions a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices.Assertion (

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Statement-1: In the coagulation of negatively charged arsenic sulphide soil, the coagulating power decreases in the order, Al3+ > Ba2+ > Na+.Statement-2 : Generally greater the valence of coagulating ion, the greater is its power of coagulation.a)Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.b)Statement-1 is True, Statement-2 is True; Statement-2 is NOT acorrect explanation for Statement-1.c)Statement-1 is True, Statement-2 is False.d)Statement-1 is False, Statement-2 is TrueCorrect answer is option 'A'. Can you explain this answer?
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Statement-1: In the coagulation of negatively charged arsenic sulphide soil, the coagulating power decreases in the order, Al3+ > Ba2+ > Na+.Statement-2 : Generally greater the valence of coagulating ion, the greater is its power of coagulation.a)Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.b)Statement-1 is True, Statement-2 is True; Statement-2 is NOT acorrect explanation for Statement-1.c)Statement-1 is True, Statement-2 is False.d)Statement-1 is False, Statement-2 is TrueCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Statement-1: In the coagulation of negatively charged arsenic sulphide soil, the coagulating power decreases in the order, Al3+ > Ba2+ > Na+.Statement-2 : Generally greater the valence of coagulating ion, the greater is its power of coagulation.a)Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.b)Statement-1 is True, Statement-2 is True; Statement-2 is NOT acorrect explanation for Statement-1.c)Statement-1 is True, Statement-2 is False.d)Statement-1 is False, Statement-2 is TrueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Statement-1: In the coagulation of negatively charged arsenic sulphide soil, the coagulating power decreases in the order, Al3+ > Ba2+ > Na+.Statement-2 : Generally greater the valence of coagulating ion, the greater is its power of coagulation.a)Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.b)Statement-1 is True, Statement-2 is True; Statement-2 is NOT acorrect explanation for Statement-1.c)Statement-1 is True, Statement-2 is False.d)Statement-1 is False, Statement-2 is TrueCorrect answer is option 'A'. Can you explain this answer?.
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