Practice Questions

Q55.Which compound would give 5−keto −2−methyl hexanal upon ozonolysis? JEE Main 2015 (04 Apr) JEE Main Previous Year Paper (1) (2) (3) (4)

Q56.In the following sequence of reactions: KMnO4 SOCl2 H2/ Pd −−−Toluene → A → B → C BaSO4 The Product C is: (1) C6H5CHO (2) C6H5COOH (3) C6H5CH3 (4) C6H5CH2OH

Q56.In the presence of a small amount of phosphorous, aliphatic carboxylic acid reacts with chlorine or bromine to yield a reaction in which, α− hydrogen is been replaced by halogen. This reaction is known as (1) Etard reaction (2) Wolff-Kischner reaction (3) Rosenmund reaction (4) Hell-volhard-zelinsky reaction

Q56.What is the major product expected from the following reaction? Where D is an isotope of hydrogen. (1) (2) (3) (4)

Q57.In the reaction, The product E is JEE Main 2015 (04 Apr) JEE Main Previous Year Paper (1) (2) (3) (4)

Q57.The correct order of basicity is (1) (2) (3) (4)

Q57.In the reaction sequence OH− −2CH3CHO → A Δ→ B ; the product B is: JEE Main 2015 (11 Apr Online) JEE Main Previous Year Paper (1) CH3 −CH = CH −CHO (2) (3) CH3 −CH2 −CH2 −CH3 (4) CH3 −CH2 −CH2 −CH2 −OH

Q58.Which one of the following structures represents the neoprene polymer? (1) (2) (3) (4)

Q58.Match the polymers in column-A with their main uses in column-B and choose the correct answer: Column - A Column - B A. Polystyrene i. Paints and lacquers B. Glyptal ii. Rain coats C. Polyvinyl chloride iii. Manufacture of toys D. Bakelite iv. Computer discs (1) A - iii , B - i , C - ii , D - iv (2) A - ii , B - i , C - iii , D - iv (3) A - ii , B - iv , C - iii , D - i (4) A - iii , B - iv , C - ii , D - i

Q58.Which polymer is used in the manufacture of paints and lacquers? (1) Poly vinyl chloride (2) Bakelite (3) Glyptal (4) Polypropene

Q59. is used as: (1) Antacid (2) Insecticide (3) Antihistamine (4) Analgesic

Q59.Which of the following compounds is not an antacid? (1) Ranitidine (2) Aluminium hydroxide (3) Cimetidine (4) Phenelzine

Q59.Which artificial sweetener contains chlorine? (1) Sucralose (2) Alitame (3) Saccharin (4) Aspartame

Q60.Complete hydrolysis of starch gives: (1) Galactose and fructose in equimolar amounts (2) Glucose and galactose in equimolar amounts (3) Glucose and fructose in equimolar amounts (4) Glucose only JEE Main 2015 (10 Apr Online) JEE Main Previous Year Paper

Q60.Accumulation of which of the following molecules in the muscles occurs as a result of vigorous exercise? (1) Glycogen (2) Pyruvic acid (3) Glucose (4) L-lactic acid

Q60.Which of the vitamins given below is water soluble? (1) Vitamin K (2) Vitamin C (3) Vitamin D (4) Vitamin E

Q61.The largest value of r, for which the region represented by the set {ω ∈C||ω −4 −i| ≤r} is contained in the region represented by the set {z ∈C||z −1| ≤|z + i|}, is equal to : (1) 2√2 (2) 32 √2 (3) √17 (4) 52 √2

Q61.Let α and β be the roots of equation x2 −6x −2 = 0 . If an = αn −βn, ∀ n ≥1, then the value of a10−2a8 is 2a9 equal to (1) −3 (2) 6 (3) −6 (4) 3 is

Q62.A complex number z is said to be unimodular if |z| = 1 . Let z1 and z2 are complex numbers such that z1−2z2 2−z1 z 2 unimodular and z2 is not unimodular, then the point z1 lies on a (1) circle of radius √2 (2) straight line parallel to x-axis (3) straight line parallel to y-axis (4) circle of radius 2

Q62.If 2 + 3i is one of the roots of the equation 2x3 −9x2 + kx −13 = 0, k ∈R, then the real root of this equation (where i2 = −1) : (1) Exists and is equal to 1 (2) Does not exist 2 (3) Exists and is equal to 1 (4) Exists and is equal to −12

Q62.If the two roots of the equation, (a −1) (x4 + x2 + 1) + (a + 1)(x2 + x + 1) 2 = 0 are real and distinct, then the set of all values of a is equal to (1) (0, 12 ) (2) (−12 , 0) ∪(0, 12 ) (3) (−∞, −2) ∪(2, ∞) (4) (−12 , 0)

Q63.The number of integers greater than 6000 that can be formed, using the digits 3, 5, 6, 7 and 8 , without repetition is (1) 72 (2) 216 (3) 192 (4) 120

Q63.The number of ways of selecting 15 teams from 15 men and 15 women, such that each team consists of a man and a woman is (1) 1960 (2) 15! (3) (15!)2 (4) 14!

Q63.If z is a non-real complex number, then the minimum value of Im z5 is (Where Im z = Imaginary part of z ) (Im z)5 JEE Main 2015 (11 Apr Online) JEE Main Previous Year Paper (1) −2 (2) −4 (3) −5 (4) −1

Q64.Let A = {x1, x2, … , x7} and B = {y1, y2, y3} be two sets containing seven and three distinct elements respectively. Then the total number of functions f : A →B that are onto, if there exist exactly three elements x in A such that f(x) = y2, is equal to: (1) 12 ⋅7 C2 (2) 16 ⋅7 C3 (3) 14 ⋅ 7C3 (4) 14 ⋅7 C2