Practice Questions

Q39.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cis form of alkene is found to be more polar than the trans form. Reason (R): Dipole moment of trans isomer of 2-butene is zero. In the light of the above statements, choose the correct answer from the options given below : (1) (A) is false but (R) is true (2) Both (A) and (R) are true and (R) is the correct explanation of (A) (3) (A) is true but (R) is false (4) Both (A) and (R) are true but (R) is NOT the correct explanation of (A)

Q39.Identify the product A and product B in the following set of reactions. (1) (2) A - CH3CH2CH3 B −CH3CH2CH3 (3) A −CH3CH2CH2 −OH B −CH3CH2CH2 −OH (4)

Q39.Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with FeSO4 in presence of concentrated H2 SO4 indicates the presence of element/s (1) Br (2) N (3) N and S (4) S

Q39.Anomalous behaviour of oxygen is due to its (1) Large size and high electronegativity (2) Small size and low electronegativity (3) Small size and high electronegativity (4) Large size and low electronegativity

Q39.The adsorbent used in adsorption chromatography is/are - A. silica gel B. alumina C. quick lime D. magnesia Choose the most appropriate answer from the options given below : (1) A only (2) B only (3) C and D only (4) A and B only

Q39.Given below are two statements: Statement (I) : Aminobenzene and aniline are same organic compounds. Statement (II) : Aminobenzene and aniline are different organic compounds. 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) Statement I is correct but Statement II is incorrect (3) Statement I is incorrect but Statement II is (4) Both Statement I and Statement II are incorrect correct

Q39.Which of the following statements is not correct about rusting of iron? JEE Main 2024 (27 Jan Shift 2) JEE Main Previous Year Paper (1) Coating of iron surface by tin prevents rusting, (2) When pH lies above 9 or 10 , rusting of iron does even if the tin coating is peeling off. not take place. (3) Dissolved acidic oxides SO2, NO2 in water act as (4) Rusting of iron is envisaged as setting up of catalyst in the process of rusting. electrochemical cell on the surface of iron object.

Q39.The product (C) in the below mentioned reaction is: KOHalc HBr ∆ CH3 - CH2 - CH2 - Br →∆ A → B →KOHaq C (1) Propan-1-ol (2) Propene (3) Propyne (4) Propan-2-ol

Q40.The emf of cell Tl Tl+ Cu2+ Cu is 0.83 V at 298 K. It could be increased by : (0.001M) (0.01M) (1) decreasing concentration of both Tl+ and Cu2+ (2) increasing concentration of Cu2+ ions ions (3) increasing concentration of T1+ ions (4) increasing concentration of both Tl+ and Cu2+ ions

Q40. Which of the following is metamer of the given compound (X) ? (1) (2) (3) (4)

Q40.The correct IUPAC name of [PtBr2(PMe3)2] is : (1) dibromodi(trimethylphosphine)platinum(II) (2) bis(trimethylphosphine)dibromoplatinum(II) (3) dibromobis(trimethylphosphine)platinum(II) (4) bis[bromo(trimethylphosphine)]platinum(II)

Q40.Major product of the following reaction is: JEE Main 2024 (31 Jan Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q40.What happens to freezing point of benzene when small quantity of napthalene is added to benzene? (1) Increases (2) Remains unchanged (3) First decreases and then increases (4) Decreases

Q40.Reduction potential of ions are given below: ClO4- IO4- BrO4- E° = 1 . 19 V ; E° = 1 . 65 V; E° = 1 . 74 V The correct order of their oxidising power is: (1) ClO4- > IO4- > BrO4- (2) BrO4- > IO4- > ClO4- (3) BrO4- > ClO4- > IO4- (4) IO4- > BrO4- > ClO4-

Q40.Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning : JEE Main 2024 (09 Apr Shift 2) JEE Main Previous Year Paper 2 = 0 (2) Λ2mC −KaΛ∘2m + KaΛmΛm = 0 (1) Λm −Λ0m + AC 1 2 = 0 (3) Λ2mC + KaΛ∘2m −KaΛmΛ∘m = 0 (4) Λm −Λ∘m −AC 1

Q40.The functional group that shows negative resonance effect is: (1) -NH2 (2) -OH (3) -COOH (4) -OR

Q40. Which of the following are aromatic? (1) A and C only (2) B and D only (3) C and D only (4) A and B only

Q40. Consider the given chemical reaction : Product " A " is : (1) picric acid (2) acetic acid (3) adipic acid (4) oxalic acid

Q40.The molar conductivity for electrolytes A and B are plotted against C 1/2 as shown below. Electrolytes A and B respectively are : (1) A: strong electrolyte ; B: weak electrolyte (2) A: weak electrolyte ; B: weak electrolyte (3) A: weak electrolyte ; B: strong electrolyte (4) A: strong electrolyte ; B: strong electrolyte

Q40.For the Compounds : (A) H3C −CH2 −O −CH2 −CH2 −CH3 (B) H3C −CH22 −CH2 −CH2 −CH3 (C) (D) The increasing order of boiling point is : Choose the correct answer from the options given below : (1) (D) < ( C ) < ( A ) < ( B ) (2) (B) < (A) < (C) < (D) (3) (A) < (B) < (C) < (D) (4) (B) < (A) < (D) < (C)

Q40.Which of the following acts as a strong reducing agent? (Atomic number : Ce = 58, Eu = 63, Gd = 64, Lu = 71) (1) Lu3+ (2) Gd3+ (3) Eu2+ (4) Ce4+

Q40. Product P is JEE Main 2024 (04 Apr Shift 2) JEE Main Previous Year Paper (1) (2) (3) (4)

Q40.Identify product A and product B (1) (2) (3) (4)

Q40.Ionic reactions with organic compounds proceed through: (A) Homolytic bond cleavage (B) Heterolytic bond cleavage (C) Free radical formation (D) Primary free radical (E) Secondary free radical Choose the correct answer from the options given below: (1) (A) only (2) (C) only (3) (B) only (4) (D) and (E) only

Q40.The ascending order of acidity of – OH group in the following compounds is : (A) Bu – OH Choose the correct answer from the options given below : (1) (A) < (D) < (C) < (B) < (E) (2) (C) < (A) < (D) < (B) < (E) (3) (C) < (D) < (B) < (A) < (E) (4) (A) < (C) < (D) < (B) < (E)