Greater the valency of the coagulating or the flocculating ion, greater is its power to bring about coagulation and smaller is its coagulation or flocculation value. Thus for coagulation of positively charged sol, tetravalent $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ anions are more effective than trivalent anions $\left(\mathrm{PO}_{4}^{3-}\right)$ which are more effective than divalent $\left(\mathrm{SO}_{4}^{2-}\right)$ anions which in turn are more effective than monovalent $\left(\mathrm{Cl}^{-}\right)$anions.
UP CPMT-2013
SOLUTIONS
277581
The gold numbers of $A, B, C$ and $D$ are 0.04, $0.0002,10$ and 25 respectively. The protective powers of $A, B, C$, and $D$ are in the order
1 A $>$ B $>$ C $>$ D
2 B $>$ A $>$ C $>$ D
3 D $>$ C $>$ B $>$ A
4 C $>$ A $>$ B $>$ D
Explanation:
The gold number is inversely proportional to the protective power of the colloid. According to the given data in question we can say that option (b) are correct then B $>$ A $>$ C $>$ D.
AMU-2011
SOLUTIONS
277586
Which of the following will be most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3}$ Sol?
$\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}$ will be the most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3} \mathrm{~m}$ solution.
Greater the valency of the coagulating or the flocculating ion, greater is its power to bring about coagulation and smaller is its coagulation or flocculation value. Thus for coagulation of positively charged sol, tetravalent $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ anions are more effective than trivalent anions $\left(\mathrm{PO}_{4}^{3-}\right)$ which are more effective than divalent $\left(\mathrm{SO}_{4}^{2-}\right)$ anions which in turn are more effective than monovalent $\left(\mathrm{Cl}^{-}\right)$anions.
UP CPMT-2013
SOLUTIONS
277581
The gold numbers of $A, B, C$ and $D$ are 0.04, $0.0002,10$ and 25 respectively. The protective powers of $A, B, C$, and $D$ are in the order
1 A $>$ B $>$ C $>$ D
2 B $>$ A $>$ C $>$ D
3 D $>$ C $>$ B $>$ A
4 C $>$ A $>$ B $>$ D
Explanation:
The gold number is inversely proportional to the protective power of the colloid. According to the given data in question we can say that option (b) are correct then B $>$ A $>$ C $>$ D.
AMU-2011
SOLUTIONS
277586
Which of the following will be most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3}$ Sol?
$\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}$ will be the most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3} \mathrm{~m}$ solution.
Greater the valency of the coagulating or the flocculating ion, greater is its power to bring about coagulation and smaller is its coagulation or flocculation value. Thus for coagulation of positively charged sol, tetravalent $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ anions are more effective than trivalent anions $\left(\mathrm{PO}_{4}^{3-}\right)$ which are more effective than divalent $\left(\mathrm{SO}_{4}^{2-}\right)$ anions which in turn are more effective than monovalent $\left(\mathrm{Cl}^{-}\right)$anions.
UP CPMT-2013
SOLUTIONS
277581
The gold numbers of $A, B, C$ and $D$ are 0.04, $0.0002,10$ and 25 respectively. The protective powers of $A, B, C$, and $D$ are in the order
1 A $>$ B $>$ C $>$ D
2 B $>$ A $>$ C $>$ D
3 D $>$ C $>$ B $>$ A
4 C $>$ A $>$ B $>$ D
Explanation:
The gold number is inversely proportional to the protective power of the colloid. According to the given data in question we can say that option (b) are correct then B $>$ A $>$ C $>$ D.
AMU-2011
SOLUTIONS
277586
Which of the following will be most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3}$ Sol?
$\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}$ will be the most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3} \mathrm{~m}$ solution.
Greater the valency of the coagulating or the flocculating ion, greater is its power to bring about coagulation and smaller is its coagulation or flocculation value. Thus for coagulation of positively charged sol, tetravalent $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ anions are more effective than trivalent anions $\left(\mathrm{PO}_{4}^{3-}\right)$ which are more effective than divalent $\left(\mathrm{SO}_{4}^{2-}\right)$ anions which in turn are more effective than monovalent $\left(\mathrm{Cl}^{-}\right)$anions.
UP CPMT-2013
SOLUTIONS
277581
The gold numbers of $A, B, C$ and $D$ are 0.04, $0.0002,10$ and 25 respectively. The protective powers of $A, B, C$, and $D$ are in the order
1 A $>$ B $>$ C $>$ D
2 B $>$ A $>$ C $>$ D
3 D $>$ C $>$ B $>$ A
4 C $>$ A $>$ B $>$ D
Explanation:
The gold number is inversely proportional to the protective power of the colloid. According to the given data in question we can say that option (b) are correct then B $>$ A $>$ C $>$ D.
AMU-2011
SOLUTIONS
277586
Which of the following will be most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3}$ Sol?
$\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}$ will be the most effective in the coagulation of $\mathrm{Fe}(\mathrm{OH})_{3} \mathrm{~m}$ solution.