Karnataka PUC 12th Chemistry Question Paper 2025

• A. increases about three times
• B. increases about six times
• C. increases about ten times
• D. remains same

• A. $H_2$ only
• B. Na metal only
• C. Na and $Cl_2$
• D. $H_2$, $Cl_2$ and NaOH

• A. zero order kinetics
• B. first order kinetics
• C. second order kinetics
• D. third order kinetics

• A. Kinetic energy
• B. Potential energy
• C. Activation energy
• D. Collision frequency

• A. KMnO$_{4}$ oxidises iodide ion to iodine in acid medium
• B. Permanganate is diamagnetic
• C. Copper liberates hydrogen from acids
• D. Ti$^{2+}$ liberates hydrogen from dilute acids

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• A. [Fe(CO)$_{5}$]
• B. [Fe(CN)$_{6}$]$^{3\text{--}}$
• C. [Fe(H$_{2}$O)$_{6}$]$^{3+}$
• D. [Fe(C$_{2}$O$_{4}$)$_{3}$]$^{3\text{--}}$

• A. A – i, B – ii, C – iii, D – iv
• B. A – iv, B – iii, C – ii, D – i
• C. A – iv, B – ii, C – iii, D – i
• D. A – i, B – iii, C – ii, D – iv

• A. cyanide
• B. isocyanide
• C. alkyl nitrite
• D. nitroalkane

• A. chloroquine
• B. chloramphenicol
• C. halothane
• D. chloroform

• A. C$_{6}$H$_{5}$ – CH$_{2}$ – CH$_{2}$OH
• B. CH$_{3}$C$_{6}$H$_{5}$ – CH$_{2}$ – CH – OH
• C. C$_{6}$H$_{5}$ – CH$_{2}$ OH
• D. CH$_{3}$CH$_{2}$OH

• A. o – nitrophenol
• B. phenol
• C. p – nitrophenol
• D. ethanol

• A. Zinc amalgam + conc.HNO$_{3}$
• B. Zinc amalgam + conc. HCl
• C. Sodium amalgam + conc. HNO$_{3}$
• D. Sodium amalgam + conc. HCl

• A. H$_{3}$PO$_{2}$+ H$_{2}$O
• B. SnCl$_{2}$/HCl
• C. LiAlH$_{4}$
• D. H$_{3}$PO$_{4}$

• A. quaternary ammonium salt
• B. primary amine
• C. secondary amine
• D. tertiary amine

• A. Statement – I and Statement – II are correct
• B. Statement – I and Statement – II are incorrect
• C. Statement – I is correct and Statement – II is incorrect
• D. Statement – I is incorrect and Statement – II is correct