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Chemistry · 2021 · 26 Feb · Shift 2

25 questions from this JEE Main paper

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2021 · 26 Feb · Shift 2
Chemistry

Chemistry · 2021 · 26 Feb · Shift 2

25 questions from this JEE Main paper

Chemical Bonding and Molecular Structure1 questions Alcohols Phenols and Ethers2 questions Hydrocarbons1 questions Compounds Containing Nitrogen1 questions P Block Elements1 questions Structure of Atom2 questions Periodic Table and Periodicity2 questions Haloalkanes and Haloarenes1 questions Aldehydes Ketones and Carboxylic Acids4 questions Biomolecules1 questions Practical Organic Chemistry1 questions Solutions1 questions Chemical Kinetics and Nuclear Chemistry1 questions D and F Block Elements1 questions Thermodynamics1 questions Electrochemistry1 questions Ionic Equilibrium1 questions Coordination Compounds1 questions Some Basic Concepts of Chemistry1 questions

Q1.Match List - I with List - II. Choose the correct answer from the options given below : Includes table
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q2.Ceric ammonium nitrate and $C H C l_{3}$ /alc. $K O H$ are used for the identification of functional groups present in and respectively.
Chemistry · Alcohols Phenols and Ethers · MCQ
Q3.In $C 1 H_{2} = C 2 = C 3 H - C 4 H_{3}$ molecule, the hybridization of carbon 1, 2, 3 and 4 respectively, are :
Chemistry · Hydrocarbons · MCQ
Q4.A. Phenyl methanamine B. N,N-Dimethylaniline C. N-Methyl aniline D. Benzenamine Choose the correct order of basic nature of the above amines.
Chemistry · Compounds Containing Nitrogen · MCQ
Q5.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : In $T l I_{3}$ , isomorphous to $C s I_{3}$ , the metal is present in +1 oxidation state. Reason R : $T l$ metal has fourteen $f$ …
Chemistry · P Block Elements · MCQ
Q6.Which of the following forms of hydrogen emits low energy $β$ - particles?
Chemistry · Structure of Atom · MCQ
Q7.Which pair of oxides is acidic in nature?
Chemistry · Periodic Table and Periodicity · MCQ
Q8.Identify A in the given reaction. Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q9.Match List - I with List - II. Choose the correct answer from the options given below : Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q10.Identify A in the following chemical reaction. Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q11.2, 4-DNP test can be used to identify :
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q12.Considering the above reaction, the major product among the following is : Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q13.Identify A in the given chemical reaction. Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q14.The correct order of electron gain enthalpy is :
Chemistry · Periodic Table and Periodicity · MCQ
Q15.Match List - I with List - II. Choose the correct answer from the options given below : Includes table
Chemistry · Biomolecules · MCQ
Q16.Seliwanoff test and Xanthoproteic test are used for the identification of and respectively.
Chemistry · Practical Organic Chemistry · MCQ
Q17.When 12.2 g of benzoic acid is dissolved in 100 g of water, the freezing point of solution was found to be $-$ 0.93 $^{\circ}$ C (Kf( $H_{2} O$ ) = 1.86 K kg mol $-$ 1). The number (n) of benzoic acid molecules associated (assuming 100%…
Chemistry · Solutions · Numerical
Q18.If the activation energy of a reaction is 80.9 kJ mol $-$ 1, the fraction of molecules at 700 K, having enough energy to react to form products is e $-$ x. The value of x is . (Rounded off to the nearest integer)…
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q19.In mildly alkaline medium, thiosulphate ion is oxidized by $M n O_{4}^{-}$ to "A". The oxidation state of sulphur in "A" is .
Chemistry · D and F Block Elements · Numerical
Q20.The average S-F bond energy in kJ mol $-$ 1 of $S F_{6}$ is . (Rounded off to the nearest integer) [Given : The values of standard enthalpy of formation of $S F_{6}$ (g), S(g) and F(g) are - 1100, 275 and 80 kJ mol $-$ 1…
Chemistry · Thermodynamics · Numerical
Q21.Emf of the following cell at 298K in V is x $\times$ 10 $-$ 2. $Z n$ | $Z n^{2 +}$ (0.1 M)|| $A g^{+}$ (0.01 M)| $A g$ The value of x is . (Rounded off to the nearest integer) [Given : $E_{Z n^{2 +} / Z n}^{θ} = - 0.76 V; E_{A g^{2 +} / A g}^{θ} = + 0.80 V; \frac{2.303 R T}{F} = 0.059$ …
Chemistry · Electrochemistry · Numerical
Q22.The pH of ammonium phosphate solution, if pka of phosphoric acid and pkb of ammonium hydroxide are 5.23 and 4.75 respectively, is .
Chemistry · Ionic Equilibrium · Numerical
Q23.The number of stereoisomers possible for $[C o (o x)_{2} (B r) (N H_{3})]^{2 -}$ is . [ox = oxalate]
Chemistry · Coordination Compounds · Numerical
Q24.A ball weighing 10 g is moving with a velocity of 90 ms $-$ 1. If the uncertainty in its velocity is 5%, then the uncertainty in its position is $\times$ 10 $-$ 33 m. (Rounded off to the nearest integer) [Given : h…
Chemistry · Structure of Atom · Numerical
Q25.The $N a N O_{3}$ weighed out to make 50 mL of an aqueous solution containing 70.0 mg $N a^{+}$ per mL is g. (Rounded off to the nearest integer) [Given : Atomic weight in g mol $-$ 1 - $N a$ : 23; N : 14; O : 16]
Chemistry · Some Basic Concepts of Chemistry · Numerical