Practice Questions

Q37.Amongst baking soda, caustic soda and washing soda carbonate anion is present in : (1) Washing Soda only (2) washing soda and caustic soda only. (3) washing soda and baking soda only. (4) baking soda, caustic soda and washing soda.

Q37. L-isomer of a compound ′A′(C4H8O4)gives a positive test with [Ag (NH3)2]+ . Treatment of ' A' with acetic anhydride yields triacetate derivative. Compound ' A' produces an optically active compound (B) and an optically inactive compound (C) on treatment with bromine water and HNO3 respectively. Compound (A) is : (1) (2) (3) (4)

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.Statement I: An alloy of lithium and magnesium is used to make aircraft plates. Statement II : The magnesium ions are important for cell-membrane integrity. In the light the above statements, choose the correct answer from the options given below (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.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

Q37.The correct order of nucleophilicity is (1) F−> OH− (2) H2 ¨O > OH− (3) ROH > RO− (4) NH−2 > NH3

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.Among the following, basic oxide is (1) SO3 (2) SiO2 (3) CaO (4) Al2 O3

Q37.Arrange the following in decreasing acidic strength. (1) A > B > C > D (2) B > A > C > D (3) D > C > A > B (4) D > C > B > A

Q37.Portland cement contains 'X' to enhance the setting time. What is 'X'? 1 (1) CaSO4 · 2H2O (2) CaSO4 · 2H2O (3) CaSO4 (4) CaCO3

Q37.Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Boric acid is a weak acid Reason R : Boric acid is not able to release H+ ion on its own. It receives OH- ion from water and releases H+ ion. In the light of the above statements, choose the most appropriate answer from the options given below. (1) Both A and R are correct and R is the correct (2) Both A and R are correct but R is NOT the explanation of A correct explanation of A (3) A is correct but R is not correct (4) A is not correct but R is correct

Q37.Product ' A ' of following sequence of reactions is (1) (2) (3) (4)

Q37.Match List-I with List-II List-I List-II (Mixture) (Purification Process) A Chloroform & Aniline I Steam distillation B Benzoic acid & Napthalene II Sublimation C Water & Aniline III Distillation D Napthalene & Sodium chloride IV Crystallisation (1) A −IV, B −III, C −I, D −II (2) A −III, B −I, C −IV, D −II (3) A −III, B −IV, C −II, D −I (4) A −III, B −IV, C −I, D −II

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.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.Given below are two statements: one is labelled as Assertion and the other is labelled as Reason. JEE Main 2022 (25 Jun Shift 2) JEE Main Previous Year Paper Assertion: A mixture contains benzoic acid and napthalene. The pure benzoic acid can be separated out by the use of benzene. Reason: Benzoic acid is soluble in hot water. In the light of the above statements, choose the most appropriate answer from the options given below. (1) Both Assertion and Reason are true and Reason is (2) Both Assertion and Reason are true but Reason is the correct explanation of Assertion. not the correct explanation of Assertion. (3) Assertion is true but Reason is false. (4) Assertion is false but Reason is true.

Q37.Which will have the highest enol content? JEE Main 2022 (26 Jun Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

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

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.The Zeta potential is related to which property of colloids? (1) Colour (2) Brownian movement (3) Charge on surface of colloidal particle (4) Tyndall effect

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.Given below are two Statements : Statement I : Classical smog occurs in cool humid climate. It is a reducing mixture of smoke, fog and sulphur dioxide. Statement II : Photochemical smog has components, ozone, nitric oxide, acrolein, formaldehyde, PAN etc. In the light of the above statements, choose the most appropriate answer from the options given below. (1) Both Statement I and Statement II are correct. (2) Both Statement I and Statement II are incorrect. (3) Statement I is incorrect but Statement II is (4) Statement I is correct but Statement II is correct. incorrect.

Q38.Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Thin layer chromatography is an adsorption chromatography. Reason R : A thin layer of silica gel is spread over a glass plate of suitable size in thin layer chromatography which acts as an adsorbent. In the light of the above statements, choose the correct answer from the options given below (1) Both A and R are true and R is the correct (2) Both A and R are true but R is NOT the correct explanation of A explanation of A (3) A is true but R is false (4) A is false but R is true JEE Main 2022 (28 Jul Shift 2) JEE Main Previous Year Paper