GUJCET - 2017 _ MCQ Exam _ Www.gujcet.in

Gujcet Sem 3 =>  Maths: Ch - 6 | Chemist Chemistrr y: Ch - 6, 7 Sem 4 =>  Maths: Ch - 1, 1, 2, 3 | Chemistr Chemistr y: Ch - 5, 6, 7

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Find incorrect statement. Stability of aniline is less than that of anilinium Basicity of aromatic amines is less than that of (a) (b) ion. Hence aniline has greater tendency to ammonia. accept proton. Basicity of diethyl amine is greater than that of Basicity of diethyl amine is greater than that of (c) (d) aniline. ethanamine.

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Which of the following is most basic ? (a) C6H5NH2 (c) C2H5NH2

(b) (C6H5)NH (d) (C2H5)NH

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On whi which ch side side of the the pept peptid ide e cha chain in C–te C–term rmin ina al res resid idue ue is writ writte ten n? (a) Right side (b) Left side (c) Middle of the chain (d) On any side

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What is the IUPAC name of H3C = CHCH 2OH ? (a) Prop-2-yne-1-ol (c) 1-hydroxy 2-Propan

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(b) Prop-2-ene-1-ol (d) Propenol

In general formula CnH2n-4On-2. What should be the value of 'n' for raffinose ? (a) 12 (c) 14

(b) 18 (d) 13

Which is the correct priority order ? (a) -COOH, -CONH2, -CHO, -COCH 3 (c) -COOH, -COCH3, -CONH2, -CHO

(b) -COOH, -CONH2, -COCH3, -CHO (d) -COCH3, -CONH2, -COOH, -CHO

A particle moving in a straight line. has velocity v at any point, where v2 = 2 - 3x.If x represents its distance from a fixed point at time t then, acceleration of particle is _____ (a) constant (b) zero (c) variable (d) undefined

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If the curves y  =  = x 2 + ax  +  + b and y  =  = x (c - x ) touch each other at (1, 0) then _____ . (a)  a  = -3, b = 2, c = 1 (b)  a  = 3, b = -2, c = 1 (c) a = -1, b = -3, c = 2 (d)  a  = 1, b = 2, c = 3

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Whic Which h of of the the foll follow owin ing g rea reage gen nts can can bri bring ng abo about reduc educti tio on of of ket keto one ? (a) H2 / Ni or LiAIH 4 (b) Na + C2H5OH (c) N2H4 /OH- or Zn - Hg / HCL

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(d) All of the the abov above e

Give Give bond bond angl angle e in in C - O - C and and hybr hybrid idiz izat atio ion n of of oxy oxyge gen n ato atom m in in sim simpl ple e eth ether er.. (a) (a) 18 180º 0º,, sp (b) 117º, sp2 (c) 111.7º, sp3 (d) 109º, sp3

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Which of the following reactions will be used to prepare ethyl benzene from acetophenone ? (a) Clemmensen reduction (b) Grignard reagent (c) Condensation reaction (d) Cannizzaro reaction

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Which colour is produced when schiff's reagent is added to glucose ? (a) Violet (b) Orange (c) Green (d) No colour

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Basicity of amine is greater than _____ . (a) alcohol (c) ester

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(b) ether (d) All the given

What is the number of moles of monocarboxylic acid required to convert 5 moles of glycerol into corresponding ester ? (a) 5 (b) 10 (c) 15 (d) 15 Benzoic acid when heated with X  gives benzene and phenol when heated with Y  (also) gives benzene. What are respectively X  and Y  ? (a) Sodalime and copper (b) Zn powder and NaOH (c) Zinc powder and sodalime (d) Sodalime and Zn - powder What is used to prepare bakelite plastic ? (a) Acetone (c) Benzaldehyde

(b) Methanal (d) Acetophenone

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The rate of the second order reaction depends on _____ . (a) concentration of neucleophile (b) only concentration of substrate (c) concentration of product (d) concentration of two reactants

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The maximum area of a right angled triangle with hypotenuse h is : (a) h322 (b) h22 (c) h22 (d) h24

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Which of the following has higher SN2 reactivity ? (a) 2-bromo propane (b) 2-bromo-2-methyl butane (c) 1-bromo propane (d) 2-bromo-2-methyl propane

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The two curves x3 - 3xy2 + 2 = 0 and 3x 2y - y3 - 2 = 0 _____ . (a) cut at right angles (b) touch each other (c) cut an angle π3 (d) cut an angle π4

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∫0π2cos3xdx= _____. (a) 23 (c) 0

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(b) 83 (d) 1

In a ΔABC if sides a and b remain constant such that α is the error in C, then relative error in its area is _____ . (a) α cot C (b) α sin C (c) α tan C (d) α cos C

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f ( x ) = (3 - x )e2 x  - 4 xe x  - 1 then _____ . (a)  f ( x ) has maximum value at  x  = 0 (b)  f ( x ) has minimum value at  x  = 0 f ( x ) has not maximum or minimum value for  x  (c) (d)  f ( x ) is not differentiable at  x  = 0

=0

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Which catalyst is used in preparation of bromobenzene by bromination of benzene ? (a) FeBr3 (b) HBr (c) AlBr3

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(d) Br2

The radius of a cone increases at the rate of 4 cm/sec and the altitude is decreasing at the rate of 3 cm/sec. When the radius is 3 cm and altitude is 4 cm, the rate of change of lateral surface is _____. (a) 30π cm2/sec (b) 10 cm2/sec (c) 20π cm2/sec (d) 22π cm2/sec In the presence of which reagent does glucose reacts with (CH3CO)2O to give pentaacetyl glucose by acetylation reaction ? (a) Pyridine (b) Anhydrous AICI3 (c) Pyrine

(d) All of the above

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What is formed when ammonium acetate is heated at high temperature ? (a) Acetic acid + ammonia (b) Acetamide (c) Formamide (d) Urea

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 ∫-ππ(cos pt - sin qt)2 dt = _____ where p and q (a) -π (c) π

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z - {0} (b) 0 (d) 2π

By which enzyme, is the fermentation of sugar present in molasses carried out, so that sugar is converted into glucose and fructose ? (a) Zymase (b) Invertase (c) Maltase (d) Diastase ∫sin8 x - cos8 x1-2sin2xcos2x dx = _____ + c (a) -sin x cos x (c) sin2x

(b) sin x cos x (d) cos2x

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If fx=λsinx+6cosx2sinx+3cosx is strictly increasing function, then (a) λ > 1 (b) λ < 1 (c) λ < 4 (d) λ >4

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What is formed when amide is heated with P4O10 ? (a) Amine (c) Ester

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If ∫1kfx=81 and fx= 3x2+21≤x≤28x (a) 3 (c) 5

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∫sinx + cosxsin2x dx = _____ (a) sin-1sinx-cosx (c) sin-1cosx-sinx

(b) Nitrile (d) Aldol

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