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Chemistry · 2025 · 24 Jan · Shift 2

25 questions from this JEE Main paper

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2025 · 24 Jan · Shift 2
Chemistry

Chemistry · 2025 · 24 Jan · Shift 2

25 questions from this JEE Main paper

Periodic Table and Periodicity2 questions D and F Block Elements1 questions Salt Analysis1 questions Thermodynamics2 questions Haloalkanes and Haloarenes1 questions Some Basic Concepts of Chemistry1 questions Electrochemistry1 questions Compounds Containing Nitrogen1 questions Biomolecules1 questions Basics of Organic Chemistry4 questions Coordination Compounds2 questions Chemical Equilibrium1 questions Chemical Kinetics and Nuclear Chemistry2 questions Chemical Bonding and Molecular Structure1 questions Aldehydes Ketones and Carboxylic Acids1 questions Structure of Atom1 questions Practical Organic Chemistry1 questions Ionic Equilibrium1 questions

Q1.The successive 5 ionisation energies of an element are $800, 2427, 3658, 25024$ and $32824 kJ / mol$ , respectively. By using the above values predict the group in which the above element is present :
Chemistry · Periodic Table and Periodicity · MCQ
Q2.Match List - I with List - II. Choose the correct answer from the options given below : Includes table
Chemistry · D and F Block Elements · MCQ
Q3. $Find the compound ’ A ’ from the following reaction sequences. A aqua-regia B (1) KNO_{2} ∣ NH_{4} OH (2) AcOH yellow ppt$ …
Chemistry · Salt Analysis · MCQ
Q4. $S (g) + \frac{3}{2} O_{2} (g) \to SO_{3} (g) + 2 x kcal SO_{2} (g) + \frac{1}{2} O_{2} (g) \to SO_{3} (g) + y kcal$ …
Chemistry · Thermodynamics · MCQ
Q5.The structure of the major product formed in the following reaction is : Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q6.The elemental composition of a compound is $54.2% C, 9.2% H$ and $36.6% O$ . If the molar mass of the compound is $132 g mol^{- 1}$ , the molecular formula of the compound is : [Given : The…
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q7.Based on the data given below : $E_{Cr_{2} O_{7}^{2 -} / Cr^{3 +}}^{\circ} = 1.33 V E_{MnO_{4}^{-} / Mn^{2 +}}^{0} = 1.51 V E_{Cl_{2} / Cl^{(-)}}^{\circ} = 1.36 V E_{Cr^{3 +} / Cr}^{\circ} = - 0.74 V$ …
Chemistry · Electrochemistry · MCQ
Q8.For reaction The correct order of set of reagents for the above conversion is : Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q9.Given below are two statements : Statement (I) : The first ionization energy of Pb is greater than that of Sn . Statement (II) : The first ionization energy of Ge is greater than that of Si . In the light of the above statements, choose…
Chemistry · Periodic Table and Periodicity · MCQ
Q10.Match List - I with List - II. Choose the correct answer from the options given below : Includes table Includes diagram
Chemistry · Biomolecules · MCQ
Q11.Which of the following mixing of 1 M base and 1 M acid leads to the largest increase in temperature?
Chemistry · Thermodynamics · MCQ
Q12.In the given structure, number of sp and $sp^{2}$ hybridized carbon atoms present respectively are : Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q13.The conditions and consequence that favours the $t_{2 g}^{3} e_{g}^{1}$ configuration in a metal complex are :
Chemistry · Coordination Compounds · MCQ
Q14.For the reaction, $H_{2} (g) + I_{2} (g) ⇌ 2 HI (g)$ Attainment of equilibrium is predicted correctly by :
Chemistry · Chemical Equilibrium · MCQ
Q15.Given below are two statements : Statement (I) : is valid for first order reaction. Statement (II) : is valid for first order reaction. In the light of the above statements, choose the correct answer from the options given below : Includes diagram
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q16.Given below are two statements : Statement (I) : Experimentally determined oxygen-oxygen bond lengths in the $O_{3}$ are found to be same and the bond length is greater than that of a $O = O$ (double bond) but less…
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q17.Match List - I with List - II. Choose the correct answer from the options given below : Includes table Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q18.When Ethane-1,2-diamine is added progressively to an aqueous solution of Nickel (II) chloride, the sequence of colour change observed will be:
Chemistry · Coordination Compounds · MCQ
Q19.For hydrogen atom, the orbital/s with lowest energy is/are : (A) $4s$ (B) $3 p_{x}$ (C) $3 d_{x^{2} - y^{2}}$ (D) $3 d_{z^{2}}$ (E) $4 p_{z}$ Choose the correct answer from the options given below :
Chemistry · Structure of Atom · MCQ
Q20.Identify correct statement/s : (A) $- OCH_{3}$ and $- NHCOCH_{3}$ are activating group. (B) $- CN$ and -OH are meta directing group. (C) -CN and $- SO_{3} H$ are meta directing group. (D) Activating…
Chemistry · Basics of Organic Chemistry · MCQ
Q21.Consider a complex reaction taking place in three steps with rate constants $k_{1}, k_{2}$ and $k_{3}$ respectively. The overall rate constant $k$ is given by the expression $k = \frac{k _{1} k _{3}}{k _{2}}$ . If the…
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q22.The hydrocarbon $(X)$ with molar mass $80 g mol^{- 1}$ and $90%$ carbon has degree of unsaturation.
Chemistry · Basics of Organic Chemistry · Numerical
Q23.In Carius method of estimation of halogen, 0.25 g of an organic compound gave 0.15 g of silver bromide ( AgBr ). The percentage of Bromine in the organic compound is $\times 1 0^{- 1} %$ (Nearest integer). (Given :…
Chemistry · Practical Organic Chemistry · Numerical
Q24.The observed and normal molar masses of compound $MX_{2}$ are 65.6 and 164 respectively. The percent degree of ionisation of $MX_{2}$ is %. (Nearest integer)
Chemistry · Ionic Equilibrium · Numerical
Q25.The possible number of stereoisomers for 5-phenylpent-4-en-2-ol is .
Chemistry · Basics of Organic Chemistry · Numerical