List of top Chemistry Questions asked in UP Board XII

Write short notes on the following:
i) Tischenko reaction
ii) Cannizzaro's reaction
iii) Clemmensen reduction

Complete the following equations:
(i) $\mathrm{CH_3CH_2CH_2OH + SOCl_2 \;\longrightarrow\; ?}$
(ii) $\mathrm{CH_3CH_2CH{=}CH_2 + HBr \;\longrightarrow\; ?}$
(iii) $\mathrm{(CH_3)_3CBr + KOH \;\longrightarrow\; ?}$
(iv) $\mathrm{CH_3CH_2Br + KCN \xrightarrow{Ethanol\ (aq.)}\; ?}$
(v) $\mathrm{CH_3CH_2Br + AgNO_2 \xrightarrow{alc.}\; ?}$

Write short notes on the following:
(i) Hunsdiecker reaction
(ii) Frankland's reaction
(iii) Dehydrohalogenation

Write IUPAC names of the following:
(i) K$_2$[HgI$_4$]
(ii) [Cu(NH$_3$)$_4$]SO$_4$
(iii) K$_3$[Al(C$_2$O$_4$)$_3$]
(iv) [Cr(CO)$_6$]

The rate constant for a first–order reaction is $60\ \mathrm{s^{-1}$. How much time will it take to reduce the initial concentration of the reactant to $\dfrac{1}{16}$th?}

Complete the following chemical equation: \(\mathrm{CH_3CHBrCH_3}\ \xrightarrow[\ \Delta\ ]{\mathrm{KOH(alc)}\ (A)\ \xrightarrow[\ \mathrm{ROOR}\ ]{\mathrm{HBr}}\ (B)\).}

Write IUPAC names of the following compounds:
(i) CH$_3$CO(CH$_2$)$_4$CH$_3$
(ii) CH$_3$CH$_2$CHBrCH$_2$CH(CH$_3$)CHO

Write the chemical equations of the following reactions:
i) Reaction of dilute HNO$_3$ with phenol
ii) Reaction of phenol with chloroform in the presence of NaOH (aq.)

Ascorbic acid is –

(CH$_3$)$_3$N is a –

In the reaction CH$_3$COCl + H$_2$ \xrightarrow{Pd-BaSO$_4$ .......... the product is –}

Colourless ion in the following is –

The value of $x$ in the complex ion [Ni(CN)$_4$]$^x$ is –

The amount of Na$_2$CO$_3$ to prepare 500 ml 0.2 M solution is –