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Chemistry · 2025 · 23 Jan · Shift 2

25 questions from this JEE Main paper

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2025 · 23 Jan · Shift 2
Chemistry

Chemistry · 2025 · 23 Jan · Shift 2

25 questions from this JEE Main paper

Ionic Equilibrium1 questions Solutions2 questions D and F Block Elements2 questions Periodic Table and Periodicity1 questions Alcohols Phenols and Ethers1 questions Biomolecules1 questions Thermodynamics2 questions Hydrocarbons1 questions Haloalkanes and Haloarenes2 questions Chemical Kinetics and Nuclear Chemistry1 questions Coordination Compounds1 questions Salt Analysis1 questions Electrochemistry1 questions Chemical Equilibrium1 questions Structure of Atom2 questions Aldehydes Ketones and Carboxylic Acids2 questions Some Basic Concepts of Chemistry2 questions Compounds Containing Nitrogen1 questions

Q1.pH of water is 7 at $2 5^{\circ} C$ . If water is heated to $8 0^{\circ} C$ ., it's pH will :
Chemistry · Ionic Equilibrium · MCQ
Q2.When a non-volatile solute is added to the solvent, the vapour pressure of the solvent decreases by 10 mm of Hg . The mole fraction of the solute in the solution is 0.2 . What would be the mole fraction of the solvent if decrease in vapour…
Chemistry · Solutions · MCQ
Q3.Match List - I with List - II Choose the correct answer from the options given below : Includes table
Chemistry · D and F Block Elements · MCQ
Q4.Consider a binary solution of two volatile liquid components 1 and $2. x_{1}$ and $y_{1}$ are the mole fractions of component 1 in liquid and vapour phase, respectively. The slope and intercept of the linear plot of $\frac{1}{x _{1}}$ vs $\frac{1}{y _{1}}$ …
Chemistry · Solutions · MCQ
Q5.Given below are the atomic numbers of some group 14 elements. The atomic number of the element with lowest melting point is :
Chemistry · Periodic Table and Periodicity · MCQ
Q6.Given below are two statements : Statement (I) : The boiling points of alcohols and phenols increase with increase in the number of C -atoms. Statement (II) : The boiling points of alcohols and phenols are higher in comparison to other…
Chemistry · Alcohols Phenols and Ethers · MCQ
Q7.The $α$ -Helix and $β$ - Pleated sheet structures of protein are associated with its :
Chemistry · Biomolecules · MCQ
Q8.The effect of temperature on spontaneity of reactions are represented as : The incorrect combinations are : Includes table
Chemistry · Thermodynamics · MCQ
Q9.Match List - I with List - II Choose the correct answer from the options given below : Includes table Includes diagram
Chemistry · Hydrocarbons · MCQ
Q10.Identify the products [A] and [B], respectively in the following reaction: Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q11.Which of the following graphs most appropriately represents a zero order reaction?
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q12.Identify the coordination complexes in which the central metal ion has $d^{4}$ configuration. (A) $[FeO_{4}]^{2 -}$ (B) $[Mn (CN)_{6}]^{3 -}$ (C) $[Fe (CN)_{6}]^{3 -}$ … Includes diagram
Chemistry · Coordination Compounds · MCQ
Q13.Identify A, B and C in the given below reaction sequence Includes diagram
Chemistry · Salt Analysis · MCQ
Q14.Standard electrode potentials for a few half cells are mentioned below : $E_{Cu^{2 +} / Cu}^{\circ} = 0.34 V, E_{Zn^{2 +} / Zn}^{\circ} = - 0.76 V E_{Ag^{+} / Ag}^{\circ} = 0.80 V, E_{Mg^{2 +} / Mg}^{\circ} = - 2.37 V$ …
Chemistry · Electrochemistry · MCQ
Q15.Consider the reaction $X_{2} Y (g) ⇌ X_{2} (g) + \frac{1}{2} Y_{2} (g)$ The equation representing correct relationship between the degree of dissociation (x) of $X_{2} Y (g)$ …
Chemistry · Chemical Equilibrium · MCQ
Q16.Given below are two statements : Statement (I) : For a given shell, the total number of allowed orbitals is given by $n^{2}$ . Statement (II) : For any subshell, the spatial orientation of the orbitals is given by $- l$ to $+ l$ values…
Chemistry · Structure of Atom · MCQ
Q17.The ascending order of relative rate of solvolysis of following compounds is : Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q18.Given below are two statements about X-ray spectra of elements : Statement (I) : A plot of $v$ ( $v =$ frequency of X-rays emitted) vs atomic mass is a straight line. Statement (II) : A plot of $v (u =$ frequency of $X$ -rays emitted) vs…
Chemistry · Structure of Atom · MCQ
Q19.Consider the following reactions $K_{2} Cr_{2} O_{7} KOH - H_{2} O [A] H_{2} SO_{4} - H_{2} O [B] + K_{2} SO_{4}$ …
Chemistry · D and F Block Elements · MCQ
Q20.Given below are two statements: Consider the following reaction Statement (I): In the case of formaldehyde is about 2280, due to small substituents, hydration is faster. Statement (II) : In the case of trichloro acetaldehyde is about 2000… Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q21.0.01 mole of an organic compound $(X)$ containing $10%$ hydrogen, on complete combustion produced $0.9 g H_{2} O$ . Molar mass of $(X)$ is $g mol^{- 1}$ .
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q22.The bond dissociation enthalpy of $X_{2} Δ H_{bond}^{\circ}$ calculated from the given data is $kJ mol^{- 1}$ . (Nearest integer) $M^{+} X^{-} (s) \to M^{+} (g) + X^{-} (g) Δ H_{lattice}^{\circ} = 800 kJ mol^{- 1} M (s) \to M (g) Δ H_{sub}^{\circ} = 100 kJ mol^{- 1} M (g) \to M^{+} (g) + e^{-} (g) Δ H_{i}^{\circ} = 500 kJ mol^{- 1} X (g) + e^{-} (g) \to X^{-} (g) Δ H_{eg}^{\circ} = - 300 kJ mol^{- 1} M (s) + \frac{1}{2} X_{2} (g) \to M^{+} X^{-} (s) Δ H_{f}^{\circ} = - 400 kJ mol^{- 1}$ …
Chemistry · Thermodynamics · Numerical
Q23.When 81.0 g of aluminium is allowed to react with 128.0 g of oxygen gas, the mass of aluminium oxide produced in grams is . (Nearest integer) Given : Molar mass of Al is $27.0 g mol^{- 1}$ …
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q24.Consider the following sequence of reactions. Total number of $sp^{3}$ hybridised carbon atoms in the major product C formed is . Includes diagram
Chemistry · Compounds Containing Nitrogen · Numerical
Q25.A compound ' $X^{'}$ absorbs 2 moles of hydrogen and ' X ' upon oxidation with $KMnO_{4} ∣ H^{+}$ gives The total number of $σ$ bonds present in the compound ' $X^{'}$ ' is … Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · Numerical