UP Board Class 12 Chemistry Question Paper 2025 PDF (Code 347 KD) is available for download here. The Mathematics exam was conducted on March 8, 2025 in the Morning Shift from 2:00 PM to 5:15 PM. The total marks for the theory paper are 100. Students reported the paper to be easy to moderate.
UP Board Class 12 Chemistry Question Paper 2025 (Code 347 KD) with Solutions
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UP Board Class 12 Chemistry Questions with Solutions
The amount of Na\(_2\)CO\(_3\) to prepare 500 ml 0.2 M solution is –
Colourless ion in the following is –
The value of \(x\) in the complex ion [Ni(CN)\(_4\)]\(^x\) is –
In the reaction CH\(_3\)COCl + H\(_2\) \xrightarrow {Pd-BaSO\(_4\) .......... the product is –
(CH\(_3\))\(_3\)N is a –
Ascorbic acid is –
What is the relation between depression in freezing point and molar mass of the solute?
Equivalent mass of KMnO\(_4\) is different in acidic and alkaline media. Why?
Cu(OH)\(_2\) is soluble in NH\(_4\)OH solution but not in NaOH solution. Why?
Complete the following chemical equation: \(\mathrm{CH_3CHBrCH_3}\ \xrightarrow[\ \Delta\ ]{\mathrm{KOH(alc)}}\ (A)\ \xrightarrow[\ \mathrm{ROOR}\ ]{\mathrm{HBr}}\ (B)\).
54% (w/w) water is present in the mixture of ethyl alcohol and water. Calculate the mole fraction of ethyl alcohol and water in the mixture.
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.)
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
How are vitamins classified? Name the vitamin responsible for coagulation of blood.
Write the definition of molality. 1/10 mole of a solute is dissolved in 100 g solvent. Calculate the molality of the solution.
What is Kohlrausch law? Write its two applications.
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?
When a brown coloured salt (A) of Mn reacts with HCl, a gas (B) is obtained. This gas in excess reacts with NH\(_3\) to form an explosive salt (C). Identify (A), (B) and (C) and write the chemical equations.
What is Nernst equation? Write the relation between standard electrode potential and electrode potential.
Explain the rate of reaction. Describe the order of reaction with example.
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)\(_6\)]
What is Tollen's reagent? Write the chemical equation for the reactions of this reagent with glucose and fructose.
What happens when — (write chemical equation only):
i) Phenol reacts with Br\(_2\) water?
ii) Acetylation of phenol happens in the presence of pyridine?
iii) Phenol is heated with PCl\(_5\)?
iv) Phenol reacts with NaOH?
v) Vapour of the mixture of phenol and methyl alcohol is passed through hot thoria (ThO\(_2\))?
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) \(\mathrm{CH_3CH_2Br + AgNO_2 \xrightarrow{alc.}\; ?}\)
How will you obtain (Write chemical equation only):
i) Ethyl alcohol from Grignard's reagent
ii) Tertiary alcohol from Grignard's reagent
iii) Ethyl alcohol from Methyl alcohol
iv) Diethyl ether from Ethyl alcohol
v) Ethyl acetate from Ethyl alcohol
Write short notes on the following:
(i) Hunsdiecker reaction
(ii) Frankland's reaction
(iii) Dehydrohalogenation
Write short notes on the following:
i) Tischenko reaction
ii) Cannizzaro's reaction
iii) Clemmensen reduction
Complete the following equations:
(i) \(\mathrm{C_6H_5NH_2 + CHCl_3 + KOH(alc)} \;\longrightarrow\)
(ii) \(\mathrm{C_6H_5NH_2 + Br_2(aq)} \;\longrightarrow\)
(iii) \(\mathrm{C_6H_5NH_2 + (CH_3CO)_2O} \;\longrightarrow\)
(iv) \(\mathrm{C_6H_5NH_2 + H_2SO_4(conc.)} \;\longrightarrow\)
(v) \(\mathrm{C_6H_5NH_2 + CH_3COCl \xrightarrow{\,base\,}} \;\longrightarrow\)
Complete the following equations and identify A, B, C, D and E.
i) \(\mathrm{CH_3COCH_3}\ \xrightarrow[distillation]{conc. H_2SO_4}\ (A)\)
ii) \(\mathrm{CH_3COCH_3}\ \xrightarrow[Heat]{I_2 + NaOH}\ (B)\)
iii) \(\mathrm{CH_3CHO}\ \xrightarrow{dil.\ NaOH}\ (C)\ \xrightarrow{Heat}\ (D)\)
iv) \(\mathrm{HCHO}\ \xrightarrow{Ca(OH)_2}\ (E)\)
Write short notes on the following:
(i) Carbylamine reaction
(ii) Hofmann–bromamide reaction
(iii) Diazotisation
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