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Chemistry · 2021 · 22 Jul · Shift 2

23 questions from this JEE Main paper

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2021 · 22 Jul · Shift 2
Chemistry

Chemistry · 2021 · 22 Jul · Shift 2

23 questions from this JEE Main paper

Periodic Table and Periodicity1 questions Basics of Organic Chemistry4 questions Alcohols Phenols and Ethers2 questions Compounds Containing Nitrogen2 questions Chemical Kinetics and Nuclear Chemistry2 questions Chemical Bonding and Molecular Structure1 questions P Block Elements1 questions D and F Block Elements2 questions Biomolecules1 questions Solutions1 questions Coordination Compounds1 questions Practical Organic Chemistry1 questions Electrochemistry1 questions Chemical Equilibrium1 questions Thermodynamics1 questions Some Basic Concepts of Chemistry1 questions

Q1.Which one of the following statements for D.I. Mendeleeff, is incorrect?
Chemistry · Periodic Table and Periodicity · MCQ
Q2.Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point)?
Chemistry · Basics of Organic Chemistry · MCQ
Q3.Which of the following compounds will provide a tertiary alcohol or reaction with excess of $C H_{3} M g B r$ followed by hydrolysis?
Chemistry · Alcohols Phenols and Ethers · MCQ
Q4.Which of the following compounds does not exhibit resonance?
Chemistry · Basics of Organic Chemistry · MCQ
Q5.In the chemical reactions given above A and B respectively are : Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q6.Isotope(s) of hydrogen which emits low energy $β -$ particles with t1/2 value > 12 years is/are
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q7.Match List-I with List-II : Choose the correct answer from the options given below : Includes table
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q8.Which of the following molecules does not show stereo isomerism?
Chemistry · Basics of Organic Chemistry · MCQ
Q9.Which one of the following group-15 hydride is the strongest reducing agent?
Chemistry · P Block Elements · MCQ
Q10.The set having ions which are coloured and paramagnetic both is :
Chemistry · D and F Block Elements · MCQ
Q11.Thiamine and pyridoxine are also known respectively as :
Chemistry · Biomolecules · MCQ
Q12.An organic compound A ( $C_{6} H_{6} O$ ) gives dark green colouration with ferric chloride. On treatment with $C H C l_{3}$ and $K O H$ , followed by acidification gives compound B. Compound B can also be obtained from compound C on reaction with…
Chemistry · Alcohols Phenols and Ethers · MCQ
Q13.Which one of the following reactions does not occur?
Chemistry · Compounds Containing Nitrogen · MCQ
Q14.Which one of the following 0.06 M aqueous solutions has lowest freezing point?
Chemistry · Solutions · MCQ
Q15.The total number of unpaired electrons present in $[C o (N H_{3})_{6}] C l_{2}$ and $[C o (N H_{3})_{6}] C l_{3}$ is :
Chemistry · Coordination Compounds · Numerical
Q16.Methylation of 10 g of benzene gave 9.2 g of toluene. Calculate the percentage yield of toluene . (Nearest integer)
Chemistry · Practical Organic Chemistry · Numerical
Q17.The number of acyclic structural isomers (including geometrical isomers) for pentene are
Chemistry · Basics of Organic Chemistry · Numerical
Q18.Assume a cell with the following reaction $C u_{(s)} + 2 A g^{+} (1 \times 1 0^{- 3} M) \to C u^{2 +} (0.250 M) + 2 A g_{(s)}$ $E_{ce l l}^{Θ} = 2.97$ V Ecell for the above reaction is V. (Nearest integer)…
Chemistry · Electrochemistry · Numerical
Q19.Value of $K_{P}$ for the equilibrium reaction $N_{2} O_{4}$ (g) $⇌$ 2 $N O_{2}$ (g) at 288 K is 47.9. The $K_{C}$ for this reaction at same temperature is . (Nearest integer) (R = 0.083 L bar K $-$ 1 mol $-$ 1)
Chemistry · Chemical Equilibrium · Numerical
Q20.If the standard molar enthalpy change for combustion of graphite powder is $-$ 2.48 $\times$ 102 kJ mol $-$ 1, the amount of heat generated on combustion of 1 g of graphite powder is kJ. (Nearest integer)
Chemistry · Thermodynamics · Numerical
Q21.Number of electrons that Vanadium (Z = 23) has in p-orbitals is equal to
Chemistry · D and F Block Elements · Numerical
Q22. $N_{2} O_{5 (g)} \to 2 N O_{2 (g)} + \frac{1}{2} O_{2 (g)}$ In the above first order reaction the initial concentration of $N_{2} O_{5}$ is 2.40 $\times$ 10 $-$ 2 mol L $-$ 1 at 318 K. The concentration of $N_{2} O_{5}$ after 1 hour was 1.60 $\times$ …
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q23.If the concentration of glucose ( $C_{6} H_{12} O_{6}$ ) in blood is 0.72 g L $-$ 1, the molarity of glucose in blood is $\times$ 10 $-$ 3 M. (Nearest integer) [Given : Atomic mass of C = 12, H = 1, O = 16 u]
Chemistry · Some Basic Concepts of Chemistry · Numerical