Question
Write overall cell reaction for lead storage battery when the battery is being charged.

Answer

$2\text{PbSO}_4(\text{s})+2\text{H}_2\text{O}(\text{l})\xrightarrow{ \ \ \ \ \ \ \ }\text{Pb(s)}+\text{PbO}_2\text{(s)}+4\text{H}^+(\text{aq})+2\text{SO}^{2-}_4(\text{aq})$

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How to prepare butan-1-ol by reduction of various derivatives of acids.
An organic compound A has the molecular formula C8H16O8. It gets hydrolysed with dilute sulphuric acid and gives a carboxylic acid B and an alcohol C. Oxidation of C with chromic acid also produced B. C on dehydration reaction gives but-1-ene. Write equations for the reactions involved.
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Short note on: Maltose
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  2. $\text{C}_6\text{H}_5\text{N}^+_2\text{BF}^-_4\xrightarrow[\triangle]{\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{NaNO}_2/\text{Cu}\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }\text{ }}\text{A}\xrightarrow{\text{ }\text{ }\text{ }\text{ }\text{Sn}/\text{HC}l\text{ }\text{ }\text{ }\text{ }}\text{B}\xrightarrow[\triangle]{\text{ }\text{ }\text{ }\text{ }\text{CHC}l_3+\text{alc. KOH}\text{ }\text{ }\text{ }\text{ }}\text{C}$

Which aqueous solution has higher concentration-1 molar or 1 molal solution of the same solute? Give reason.
$Pt ( IV ), NH _3, Cl ^{-}$and $Na ^{+}$combine with each other to form seven types of complex compounds.
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$
\left[Pt\left(NH_3\right)_6\right] Cl_4
$
(i) Write the formulas of other six complex compounds.
(ii) Write the IUPAC names of these complex compounds.
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Complete the following chemical equations:
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A 10% solution (by mass) of sucrose in water has freezing point of 269.15 K. Calculate the freezing point of 10% glucose in water if freezing point of pure water is 273.15 K.
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