Practice Questions

Q38. Cyclohexene is _________ type of an organic compound. (1) Benzenoid aromatic (2) Benzenoid non-aromatic (3) Acyclic (4) Alicyclic

Q38.Chromatographic technique/s based on the principle of differential adsorption is/are A. Column chromatography B. Thin layer chromatography C. Paper chromatography Choose the most appropriate answer from the options given below: (1) B only (2) A only (3) A & B only (4) C only

Q38.Common name of Benzene - 1, 2 - diol is - (1) catechol (2) o-cresol (3) quinol (4) resorcinol

Q39.The set of meta directing functional groups from the following sets is: (1) -CN, - NH2, - NHR, - OCH3 (2) -NO2, - NH2, - COOH, - COOR (3) -NO2, - CHO, - SO3H, - COR (4) -CN, - CHO, - NHCOCH3, - COOR

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 fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in the vapour phase. A suitable method for the extraction of these oils from the flowers is: (1) crystallisation (2) distillation under reduced pressure (3) distillation (4) steam distillation

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.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.The Molarity (M) of an aqueous solution containing 5.85 g of NaCl in 500 mL water is : (Given : Molar Mass Na : 23 and Cl : 35.5gmol−1 ) (1) 2 (2) 20 (3) 4 (4) 0.2

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

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

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

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.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

Q41.Lassaigne's test is used for detection of: (1) Nitrogen and Sulphur only (2) Nitrogen, Sulphur and Phosphorous Only (3) Phosphorous and halogens only (4) Nitrogen, Sulphur, and halogens

Q41.Choose the correct option having all the elements with d10 electronic configuration from the following: (1) 27Co, 28Ni, 26Fe, 24Cr (2) 29Cu, 30Zn, 48Cd, 47Ag (3) 46Pd, 28Ni, 26Fe, 24Cr (4) 28Ni, 24Cr, 26Fe, 29Cu

Q41.One of the commonly used electrode is calomel electrode. Under which of the following categories, calomel electrode comes? JEE Main 2024 (04 Apr Shift 1) JEE Main Previous Year Paper (1) Oxidation - Reduction electrodes (2) Metal ion - Metal electrodes (3) Gas - Ion electrodes (4) Metal - Insoluble Salt - Anion electrodes

Q41.The quantity of silver deposited when one coulomb charge is passed through AgNO3 solution : (1) 1 g of silver (2) 1 electrochemical equivalent of silver (3) 1 chemical equivalent of silver (4) 0.1 g atom of silver

Q42.A conductivity cell with two electrodes (dark side) are half filled with infinitely dilute aqueous solution of a weak electrolyte. If volume is doubled by adding more water at constant temperature, the molar conductivity of the cell will - (1) decrease sharply (2) increase sharply (3) remain same or can not be measured accurately (4) depend upon type of electrolyte JEE Main 2024 (06 Apr Shift 1) JEE Main Previous Year Paper

Q42.The reaction at cathode in the cells commonly used in clocks involves. (1) reduction of Mn from +7 to +2 (2) reduction of Mn from +4 to +3 (3) oxidation of Mn from +3 to +4 (4) oxidation of Mn from +2 to +7

Q42.In the given compound, the number of 2∘ carbon atom /s is _______. (1) Four (2) Two (3) One (4) Three JEE Main 2024 (08 Apr Shift 1) JEE Main Previous Year Paper

Q42.A solution of two miscible liquids showing negative deviation from Raoult's law will have : (1) increased vapour pressure, increased boiling (2) increased vapour pressure, decreased boiling point point (3) decreased vapour pressure, decreased boiling (4) decreased vapour pressure, increased boiling point point

Q42.The correct IUPAC name of K2 MnO4 is: (1) Potassium tetraoxopermanganate (VI) (2) Potassium tetraoxidomanganate (VI) (3) Dipotassium tetraoxidomanganate (VII) (4) Potassium tetraoxidomanganese (VI)