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Chemistry · 2021 · 27 Jul · Shift 2

22 questions from this JEE Main paper

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2021 · 27 Jul · Shift 2
Chemistry

Chemistry · 2021 · 27 Jul · Shift 2

22 questions from this JEE Main paper

Alcohols Phenols and Ethers2 questions P Block Elements2 questions Periodic Table and Periodicity1 questions Basics of Organic Chemistry2 questions Coordination Compounds2 questions Salt Analysis1 questions Biomolecules1 questions Compounds Containing Nitrogen2 questions Hydrocarbons1 questions Chemical Equilibrium1 questions Thermodynamics1 questions Some Basic Concepts of Chemistry1 questions Redox Reactions1 questions Chemical Bonding and Molecular Structure1 questions Solutions1 questions Chemical Kinetics and Nuclear Chemistry1 questions Electrochemistry1 questions

Q1.Consider the above reaction, the major product "P" formed is : Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q2.Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : $S O_{2}$ (g) is absorbed to a large extent than $H_{2}$ (g) on activated charcoal. Reason R : $S O_{2}$ (g) has a higher critical…
Chemistry · P Block Elements · MCQ
Q3.The correct order of first ionisation enthalpy is :
Chemistry · Periodic Table and Periodicity · MCQ
Q4.Given below are two statements : Statement I : Hyperconjugation is a permanent effect. Statement II : Hyperconjugation in ethyl cation $(C H_{3} - C + H_{2})$ involves the overlapping of $C_{s p^{2}} - H_{1 s}$ …
Chemistry · Basics of Organic Chemistry · MCQ
Q5.Given below are two statements : Statement I : $[M n (C N)_{6}]^{3 -}$ , $[F e (C N)_{6}]^{3 -}$ and $[C o (C_{2} O_{4})_{3}]^{3 -}$ are d2sp3 hybridised. Statement II : $[M n C l)_{6}]^{3 -}$ and $[F e F_{6}]^{3 -}$ are paramagnetic and…
Chemistry · Coordination Compounds · MCQ
Q6.To an aqueous solution containing ions such as $A l^{3 +}$ , $Z n^{2 +}$ , $C a^{2 +}$ , $F e^{3 +}$ , $N i^{2 +}$ , $B a^{2 +}$ and $C u^{2 +}$ was added conc. $H C l$ , followed by $H_{2} S$ . The total number of cations precipitated during this reaction is/are :
Chemistry · Salt Analysis · MCQ
Q7.Compound A gives D-Galactose and D-Glucose on hydrolysis. The compound A is :
Chemistry · Biomolecules · MCQ
Q8. $R - C N (ii) H_{2} O ⟶ (i) D I B A L - H R - Y$ Consider the above reaction and identify "Y"
Chemistry · Compounds Containing Nitrogen · MCQ
Q9.Consider the above reaction, and choose the correct statement : Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q10.Match List - I with List - II : Choose the correct answer from the options given below : Includes table
Chemistry · P Block Elements · MCQ
Q11.What is A in the following reaction? Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q12.The correct sequence of correct reagents for the following transformation is : Includes diagram
Chemistry · Hydrocarbons · MCQ
Q13.The equilibrium constant for the reaction A(s) $⇌$ M(s) + $\frac{1}{2}$ $O_{2}$ (g) is Kp = 4. At equilibrium, the partial pressure of $O_{2}$ is atm. (Round off to the nearest integer)
Chemistry · Chemical Equilibrium · Numerical
Q14.When 400 mL of 0.2 M $H_{2} S O_{4}$ solution is mixed with 600 mL of 0.1 M $N a O H$ solution, the increase in temperature of the final solution is $\times$ 10 $-$ 2 K. (Round off to the nearest integer). [Use : $H^{+}$ (aq)…
Chemistry · Thermodynamics · Numerical
Q15.2 $S O_{2}$ (g) + $O_{2}$ (g) $\to$ 2 $S O_{3}$ (g) The above reaction is carried out in a vessel starting with partial pressure $P S O_{2}$ = 250 m bar, $P O_{2}$ = 750 m bar and $P S O_{3}$ = 0 bar. When the reaction is complete, the total pressure in the…
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q16.10.0 mL of 0.05 M $K M n O_{4}$ solution was consumed in a titration with 10.0 mL of given oxalic acid dihydrate solution. The strength of given oxalic acid solution is $\times$ 10 $-$ 2 g/L. (Round off to the nearest…
Chemistry · Redox Reactions · Numerical
Q17.The total number of electrons in all bonding molecular orbitals of $O_{2}^{2 -}$ is . (Round off to the nearest integer)
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q18.3 moles of metal complex with formula $C o (e n)_{2} C l_{3}$ gives 3 moles of silver chloride on treatment with excess of silver nitrate. The secondary valency of Co in the complex is . (Round off to the nearest integer)
Chemistry · Coordination Compounds · Numerical
Q19.In a solvent 50% of an acid HA dimerizes and the rest dissociates. The van't Hoff factor of the acid is $\times$ 10 $-$ 2. (Round off to the nearest integer)
Chemistry · Solutions · Numerical
Q20.The dihedral angle in staggered form of Newman projection of 1, 1, 1-Trichloro ethane is degree. (Round off to the nearest integer)
Chemistry · Basics of Organic Chemistry · Numerical
Q21.For the first order reaction A $\to$ 2B, 1 mole of reactant A gives 0.2 moles of B after 100 minutes. The half life of the reaction is min. (Round off to the nearest integer). [Use : ln 2 = 0.69, ln 10 = 2.3]…
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q22.For the cell Cu(s) | $C u^{2 +}$ (aq) (0.1 M) || $A g^{+}$ (aq) (0.01 M) | Ag(s) the cell potential E1 = 0.3095 V For the cell Cu(s) | $C u^{2 +}$ (aq) (0.01 M) || $A g^{+}$ (aq) (0.001 M) | Ag(s) the cell potential = $\times$ …
Chemistry · Electrochemistry · Numerical