Practice Questions

Q37.Match List - I with List - II List-II List-II A N2g + 3H2g →2NH3g I Cu B COg + 3H2g →CH4g + H2Og II Cu / ZnO - Cr2O3 C COg + H2g →HCHOg III Fe𝑥O𝑦+ K2O + Al2O3 D COg + 2H2g →CH3OHg IV Ni Choose the correct answer from the options given below (1) A - II, B - IV, C - I, D - III (2) A - II, B - I, C - IV, D - III (3) A - III, B - IV, C - I, D - II (4) A - III, B - I, C - IV, D - II

Q37.Match List-I with List-II. List-I List-II A I Spiro compound B II Aromatic compound C III Non-planar Heterocyclic compound D IV Bicyclo compound Choose the correct answer from the options given below (1) A - II, B - I, C - IV, D - III (2) A - IV, B - III, C - I, D - II (3) A - III, B - IV, C - I, D - II (4) A - IV, B - III, C - II, D - I JEE Main 2022 (28 Jul Shift 1) JEE Main Previous Year Paper

Q37.Which among the following pairs of the structures will give different products on ozonolysis? (Consider the double bonds in the structures are rigid and not delocalized.) (1) (2) (3) (4)

Q37.Which of the following is an example of conjugated diketone? (1) (2) (3) (4)

Q37.Match List-I with Match List-II List-I List-II (Metal) (Emitted light wavelength (nm)) (A) Li (I) 670. 8 (B) Na (II) 589. 2 (C) Rb (III) 780. 0 (D) Cs (V) 455. 5 Choose the most appropriate answer from the options given below (1) (A) −(I), (B) −(II), (C) −(III), (D) −(IV) (2) (A) −(III), (B) −(II), (C) −(I), (D) −(IV) (3) (A) −(III), (B) −(I), (C) −(II), (D) −(IV) (4) (A) −(IV), (B) −(II), (C) −(I), (D) −(III)

Q37.Which technique among the following, is most appropriate in separation of a mixture of 100 mg of p- nitrophenol and picric acid? (1) Steam distillation (2) 2 −5 ft long column of silica gel (3) Sublimation (4) Preparative TLC (Thin Layer Chromatography) JEE Main 2022 (26 Jul Shift 1) JEE Main Previous Year Paper

Q37.Given below are two statements: Statement I : The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases. Statement II: Hydroxides of Be and Al dissolve in excess alkali to give beryllate and aluminate ions. In the light of the above statements. Choose the correct answer from the options given below. JEE Main 2022 (27 Jul Shift 1) JEE Main Previous Year Paper (1) Both statement I and Statement II are true (2) Both statement I and Statement II are false (3) Statement I is true but Statement II is false (4) Statement I is false but Statement II is true

Q37.The IUPAC name of ethylidene chloride is (1) 1 - chloroethene (2) 1, 2-dichloroethane (3) 1, 1-dichloroethane (4) 1-chloroethyne

Q37.Arrange the following carbocations in decreasing order of stability. (1) A > C > B (2) B > A > C (3) C > B > A (4) C > A > B

Q38.When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to (1) B2O3 (2) CoBO22 (3) CoB4O7 (4) CoB4O5OH4

Q38.The correct IUPAC name of the following compound is (1) 4 -methyl- 2 -nitro- 5 -oxohept- 3 -enal (2) 4 -methyl- 5 -oxo- 2 -nitrohept- 3 -enal (3) 4 -methyl- 6 -nitro- 3 -oxohept- 4 -enal (4) 6 -formyl- 4 -methyl- 2 -nitrohex- 3 -enal

Q38.Among the following marked proton of which compound shows lowest pKa value? (1) (2) (3) (4)

Q38.Major product of the following reaction is JEE Main 2022 (25 Jul Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q38.Which among the following pairs has only herbicides? (1) Aldrin and Dieldrin (2) Sodium chlorate and Aldrin (3) Sodium arsinate and Dieldrin (4) Sodium chlorate and sodium arsenite. Q39. 100 mL of 5%(w/v) solution of NaCl in water was prepared in 250 mL beaker. Albumin from the egg was poured into NaCl solution and stirred well. This resulted in a/ an (1) Lyophilic sol (2) Lyophobic sol (3) Emulsion (4) Precipitate

Q38.The ( ∂T∂E )P of different types of half cells are as follows : A B C D 1 × 10−4 2 × 10−4 0. 1 × 10−4 0. 2 × 10−4 (Where E is the electromotive force). Which of the above half cells would be preferred to be used as reference electrode (1) A (2) B (3) C (4) D

Q38.The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system of nomenclature is (1) -COOH > - CONH2 > - COCl > - CHO (2) -SO3H > - COCl > - CONH2 > - CN (3) (4) COOH > - - COOR > - CONH2 > - COCl JEE Main 2022 (26 Jul Shift 2) JEE Main Previous Year Paper

Q38.In 3 d series, the metal having the highest M2+/M standard electrode potential is (1) Cr (2) Fe (3) Cu (4) Zn

Q38.In the given reaction sequence, the major product ' C' is : HNO3 Br2 alcoholic −−C8H10 → A → B → C H2 SO4 Δ KOH JEE Main 2022 (24 Jun Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q38.Aqueous solution of which of the following boron compounds will be strongly basic in nature? (1) NaBH4 (2) LiBH4 (3) B2H6 (4) Na2 B4O7

Q38.Match List-I with Match List-II List-I List-II (Metal) (Application) (A) Cs (I) High temperature thermometer (B) Ga (II) Water repellent sprays (C) B (III) Photoelectric cells (D) Si (V) Bullet proof vest Choose the most appropriate answer from the options given below (1) (A) −(III), (B) −(I), (C) −(IV), (D) −(II) (2) (A) −(II), (B) −(III), (C) −(IV), (D) −(I) (3) (A) −(IV), (B) −(III), (C) −(II), (D) −(I) (4) (A) −(I), (B) −(IV), (C) −(II), (D) −(II)

Q38.The product formed in the following reaction. is: JEE Main 2022 (25 Jun Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q38.The geometry around boron in the product 'B' formed from the following reaction is 450 K BF3 + NaH ⟶ A + NaF A + NMe3 →B (1) trigonal planar (2) tetrahedral (3) pyramidal (4) square planar

Q38.Which of the following compounds is not aromatic? (1) (2) (3) (4)

Q39.Choose the correct option for the following reactions. (1) 'A' and 'B' are both Markovnikov addition (2) 'A' is Markovnikov product and 'B' is products. antiMarkovnikov product. (3) 'A' and 'B' are both anti-Markovnikov products. (4) 'B' is Markovnikov and 'A' is anti- Markovnikov product.

Q39.Nitrogen gas is obtained by thermal decomposition of: (1) NaNO2 (2) NaNO3 (3) Ba (N3)2 (4) Ba (NO3)2