CBSE Class 12 Chemistry Question Paper 2026 Set-3 is now available for download along with detailed solutions. CBSE conducted the Class 12 Chemistry examination on February 28, 2026, from 10:30 AM to 1:30 PM. The question paper consists of 33 questions carrying a total of 70 marks. The paper is divided into five sections: Section A contains MCQs, Section B contains very short answer questions, Section C contains short answer questions, Section D contains case-based questions, and Section E contains long answer questions. All sections are compulsory. The Chemistry question paper 2026 was rated moderate but slightly lengthy by students, with a significant focus on NCERT-based organic reactions and physical chemistry numericals.
CBSE Class 12 Chemistry Question Paper 2026 Set-3 with Solution PDF
| CBSE Class 12 Chemistry Question Paper 2026 Set-3 with Solution PDF | Download PDF | Check Solutions |
Identify the correct statement:
Consider the following reaction: \[ Zn_{(s)} + Ag_2O_{(s)} + H_2O_{(l)} \rightarrow Zn^{2+}_{(aq)} + 2Ag_{(s)} + 2OH^-_{(aq)} \]
Given: \[ E^\circ_{Ag^+/Ag} = 0.80 V \] \[ E^\circ_{Zn^{2+}/Zn} = -0.76 V \] \[ 1F = 96500 C mol^{-1} \]
\(\Delta G^\circ\) for above reaction is:
Electronic configuration of chromium is:
The order for the given reaction is: \[ A + 2B \rightarrow Products \] \[ Rate = k[A]^{1/2}[B]^{1} \]
Which of the following is heteroleptic complex?
The correct IUPAC name of the complex [Pt(NH\(_3\))\(_2\)Cl\(_2\)] is:
Identify the correct increasing order of boiling points of the given compounds:
Which of the following molecule is chiral in nature?
The base which is present in DNA but not in RNA is:
Identify the compound produced by the reduction of ethanenitrile with lithium aluminium hydride:
Which of the following reactions is not explained by the open chain structure of glucose?
Proteins are polymers of \(\alpha\)-amino acids which are joined to each other by:
Assertion (A): Zinc, cadmium and mercury are not considered as transition elements.
Reason (R): These elements have completely filled \(d\) orbitals in their ground state as well as in their common oxidation states.
Choose the correct option:
Assertion (A): The molecularity of the given reaction is 2. \[ 2HI \rightarrow H_2 + I_2 \]
Reason (R): Two molecules of the reactants are involved in simultaneous collision between them.
Choose the correct option:
Assertion (A): Glucose gets oxidized to six carbon gluconic acid on reaction with bromine water.
Reason (R): The carbonyl group is absent in the open chain structure of glucose.
Choose the correct option:
Assertion (A): Aromatic primary amines can be prepared by Gabriel phthalimide synthesis.
Reason (R): Aryl halides do not undergo nucleophilic substitution with phthalimide ion.
Choose the correct option:
Define coordination number.
Indicate the type of isomerism exhibited by the following complex: \([Co(en)_3]Cl_3\)
Define Effective collision.
Write the unit of (i) second order reaction and (ii) zero order reaction.
Why second ionization enthalpies of chromium and copper are exceptionally higher than those of their neighbouring elements?
Why transition elements form interstitial compounds?
The concentration of the reactant is reduced from \(0.6 mol L^{-1}\) to \(0.2 mol L^{-1}\) in 5 minutes in a first order reaction. Calculate rate constant of the reaction. (\(\log 3 = 0.48\))
Rate constant \(k\) for the first order reaction is \(2.54 \times 10^{-3} s^{-1}\). Calculate the time required for three-fourth of the reactant to decompose. (\(\log 4 = 0.60\))
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