Animal starch is the other name of.

$\mathop {C{H_2} = CH - Br}\limits_{(I)} $ $\mathop {{\text{C}}{{\text{H}}_3} - Br}\limits_{\left( {II} \right)} $ $\mathop {\begin{array}{*{20}{c}}
{C{H_3} - CH - Br} \\
{|\,\,} \\
{\,\,\,C{H_3}}
\end{array}}\limits_{\left( {III} \right)} $ $\mathop {C{H_3}C{H_2}Br}\limits_{\left( {IV} \right)} $

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Which of the following complex ion is not expected to absorb visible light ?

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A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of formula $\mathrm{M}_2 \mathrm{O}_{\mathrm{n}}$ (where $\mathrm{n}=3,4,5$ ). The 'spin-only' magnetic moment value of the amphoteric oxide from the above oxides is. . . . . . ..$\mathrm{BM}$ (near integer)

(Given atomic number: $\mathrm{Sc}: 21, \mathrm{Ti}: 22, \mathrm{~V}: 23$, $\mathrm{Cr}: 24, \mathrm{Mn}: 25, \mathrm{Fe}: 26, \mathrm{Co}: 27, \mathrm{Ni}: 28, \mathrm{Cu}: 29$, $\mathrm{Zn}: 30)$

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Prevention of corrosion of iron by zinc coating is called

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$CH_3CHO$ and $C_6H_5CH_2CHO$ can be distinguished chemically by

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For which of the following transition metal ion is shown highest magnetic moment having outer electronic configuration

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Among the members of $V$ $A$ group ($N, P, As, Sb$ and $Bi$), which of the following properties shows an increase as we go down from nitrogen to bismuth

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Schottky defect is observed in the crystal of:

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A trisubstituted compound ' $A$ ', $C _{10} H _{12} O _2$ gives neutral $FeCl _3$ test positive. Treatment of compound ' $A$ ' with $NaOH$ and $CH _3 Br$ gives $C _{11} H _{14} O _2$, with hydroiodic acid gives methyl iodide and with hot conc. $NaOH$ gives a compound B, $C _{10} H _{12} O _2$. Compound 'A' also decolorises alkaline $KMnO _4$. The number of $\pi$ bond/s present in the compound ' $A$ ' is $...........$