KCET Sample Paper Chemistry

Sample Paper

Chemistry

Q.No. 1 The intramolecular hydrogen bond is present

(A) Phenol

(B) o-Nitrophenol

(C) p-Nitrophenol

(D) p-Cresol

Q.No. 2 Which of the following oxides shows electrical properties like metals ?

(A) SiO2

(B) MgO

(C) SO2

(D) CrO2

Q.No. 3 Pick the correct statement among the following:

(A) Cetyl trimethyl ammonium bromide is a popular cationic detergent used in air conditioner

(B) Non-ionic detergents is formed when polyethylene glycol reacts with adipic acid

(C) Sodium dodecyl benzene sulphonate used in toothpaste is a cationic detergent.

(D) Sodium lauryl sulphate forms an insoluble scum with hard water.

Q.No. 4 The correct statement regarding defect in solids is

(A) Frenkel defect is usually favoured by a very small difference in the sizes of cations and anions.

(B) Frenkel defect isa dislocation defect.

(C) Trapping of proton in the lattice leads to the formation of F-centers.

(D) Schottky defect has no effect on the physical properties of solids.

Q.No. 5 The number of moles of electron required to reduce 0.2 mole of Cr2O7-2 to Cr+3

(A) 1.2

(B) 6

(C) 12

(D) 0.6

Q.No. 6 In the reaction B (OH)3 + 2H2O --------> [B(OH)4]- + H3O+ B OH3 functions are

(A) Protonic acid

(B) Lewis base

(C) Bronsted acid

(D) Lewis acid

Q.No. 7 Dead burnt plaster is

(A) CaSO4

(B) CaSO4. 1/2H2O

(C) CaSO4. H2O

(D) CaSO4. 2H2O

Q.No. 8 The alkyl halides required to prepare by Wurtz reaction are

(A)

(B)

(C)

(D)

Q.No. 9 Which of the following is not a biodegradable polymer ?

(A) Polyhydroxy butyrate −CO − β hydroxy valerate

(B) pHBV

(C) Nylon 2-Nylon-6

(D) Glyptol

Q.No. 10 Which of the following pairs contains 2 long pairs of electrons on the central atom?

(A) I3, H2O

(B) H2O, NF3

(C) XeF4, NH3

(D) SO42-,H2S

Q.No. 11 Among the following the main reactions occurring in blast furnace during extraction of iron from haematite are i. Fe2
O3 + 3CO 2Fe + 3CO2. ii. FeO + SiO2 FeSiO3 iii. Fe2O3 + 3C 2Fe + 3CO iv. CaO + SiO2 CaSiO3

(A) i and ii

(B) iii and iv

(C) ii and iii

(D) i and iv

Q.No. 12 Which of the following is the correct order of radius ?

(A) H- > H > H+

(B) Na+ > F- > O2-

(C) F- > O2- > Na+

(D) Al3+ > Mg2+ > N3-

Q.No. 13 Match the following acids with their pKa values:

(A) iii iv i ii

(B) ii i iii iv

(C) iii i iv ii

(D) iv ii iii i

Q.No. 14 The correct order of increasing basic nature for the bases, NH ,
3 CH 3 NH 2 and (CH 3 ) 2 NH and in aqueous
solutions

(A) CH NH3 2
< NH 3 < (CH 3 ) NH
2

(B) NH 3 < CH 3 NH 2 < (CH 3 ) 2 NH

(C) (CH ) NH < NH
3
2
3 < CH 3 NH 2

(D) CH NH3 2 < (CH 3 ) 2 NH < NH 3

Q.No. 15

R and S form benzyl benzoate when treated with each other. Hence P is

(A) C6H5 CHO

(B) C6H5CH2OH

(C) C6H5COCl

(D) C6H5COOH

Q.No. 16 Which of the following order is true regarding the acidic nature of phenol ?

(A) Phenol > O-cresol > O-nitrophenol

(B) O-cresol < phenol < O-nitrophenol

(C) phenol < O-cresol > O-nitrophenol

(D) phenol < O-cresol < O-nitrophenol

Q.No. 17 Which of the following statements is correct?

(A) Cl2 oxidises H2O to O2 but F2 does not.

(B) Cl2 is a stronger oxidizing agent than F2.

(C) F2 oxidises H2O to O2 but Cl2 does not

(D) Fluoride is a good oxidising agent.

Q.No. 18 The plot of t½ v/s [R]0 for a reaction is a straight-line parallel to x-axis. The unit for the rate constant of this reaction
is

(A) mol L-1s

(B) mol L-1s-1

(C) L-1s-1

(D) s-1

Q.No. 19 In the following reaction the compound Z is

(A) Benzoic acid

(B) Benzaldehyde

(C) Acetophenone

(D) Benzene

Q.No. 20 In F.C.C. the unit cell is shared equally by how many unit cells ?

(A) 10

(B) 8

(C) 6

(D) 2

Q.No. 21 Which of the following is NOT true regarding the usage of hydrogen as a fuel?

(A) High calorific value

(B) The combustible energy of hydrogen can be directly converted to electrical energy in a fuel cell

(C) Combusion product is ecofriendly.

(D) Hydrogen gas can be easily liquefied and stored.

Q.No. 22 In the manufacture of hydrogen from water gas (CO + H ), which of the following is correct statement ?
2

(A) CO is oxidized to CO with steam in the presence of a catalyst followed by absorption of in alkali.
2

(B) CO and H are separated based on difference in their densities.
2

(C) Hydrogen is isolated by diffusion.

(D) H is removed by occlusion with pd.
2

Q.No. 23 Propanoic acid undergoes HVZ reaction to give chloropropanoic acid. The product obtained is

(A) stronger acid than propanoic acid

(B) as stronger as propanoic acid

(C) weaker acid than propanoic acid

(D) stronger than dichloropropanoic acid

Q.No. 24 Which of the following is not a favourable condition for physical adsorption ?

(A) High temperature

(B) High pressure

(C) Higher critical temperature of adsorbate

(D) Low temperature

Q.No. 25 Which one of the following is a polyamide polymer ?

(A) Terylene

(B) Nylon-6,6

(C) Buna-S

(D) Bakelite

Q.No. 26 Which of the following is an amphoteric oxide ?

(A) V2O5, Cr2O3

(B) Mn2O7, Cr2O3

(C) CrO, V2O5

(D) V2O5, V2O4

Q.No. 27 Which of the following is the correct electron dot structure of molecule ?

(A)

(B)

(C)

(D)

Q.No. 28 Gold sol is not a

(A) Lyophobic sol

(B) Negatively charged sol

(C) Macromolecular sol

(D) Multimolecular colloid

Q.No. 29 H2O2 is

(A) An oxidising agent

(B) A reducing agent

(C) Both oxidising and reducing agent

(D) Neither oxidising nor reducing agent

Q.No. 30 Which of the following equations does NOT represent Charles’s law for a given mass of gas at constant pressure?

(A) V

T
= K

(B) log V = log K + log T

(C) log K = log V + log T

(D)
d(enV ) 1
=
dT T

Q.No. 31 Two particle A and B are in motion. If the wavelength associated with ‘A’ is 33.33 nm, the wavelength associated
with ‘B’ whose momentum is 1/3rd of ‘A’ is

(A) 1.0 x 10-8m

(B) 2.5 x 10-8m

(C) 1.25 x 10-8 m

(D) 1.0 x 10-7m

Q.No. 32 Which of the following possess net dipole moment?

(A) SO2

(B) BF3

(C) BeCl2

(D) CO2

Q.No. 33 If Aniline is treated with 1: 1 mixture of con. HNO3 and con. H2SO4, p-nitroaniline and m-nitroaniline are formed
nearly in equal amounts. This is due to

(A) m-directing property of –NH2 group

(B) protonation of –NH2 which causes deactivation of benzene ring

(C) m and p directing property of –NH2 group

(D) isomerisation of some p-nitroaniline into m-nitroaniline

Q.No. 34 KMnO4 acts as an oxidising agent in alkaline medium. When alkaline KMnO4 is treated with KI, iodide ion is
oxidised to

(A) I2

(B) IO-

(C) IO3-

(D) IO4-

Q.No. 35 Which one of the following metallic oxide exhibit amphoteric nature ?

(A) CaO

(B) Na O 2

(C) BaO

(D) Al O 2 3

Q.No. 36 Which of the following is more basic than aniline ?

(A) Diphenylamine

(B) Triphenylamine

(C) p-nitroaniline

(D) Benzylamine

Q.No. 37 Which of the following ions will cause hardness in water ?

(A) Ca2+

(B) Na+

(C) Cl-

(D) K+

Q.No. 38 Oxidation state of copper is +1 in

(A) Malschite

(B) Cuprite

(C) Azurite

(D) Chalcopyrite

Q.No. 39 Cis – 1, 4 – polyisoprene is called

(A) Buna – N

(B) Neoprene

(C) Buna-S

(D) Natural rubber

Q.No. 40 The reagents A, B and C respectively are

(A) H2/Pd, PCC, NaBH4

(B) NaBH4, alk, KMnO4. H2/Pd

(C) NaBH4, PCC, H2/Pd

(D) H2/Pd, alk, KMnO4, NaBH4.

Q.No. 41 Which of the following is least soluble in water at 298K?

(A) CH3NH2

(B) (CH3)3N

(C) (CH3)2NH

(D) C6H5NH2

Q.No. 42 Eutrophication causes

(A) increase of nutrients in water

(B) reduction in water pollution

(C) reduction in dissolved oxygen

(D) decreases BOD

Q.No. 43 Addition of mineral acid to an aqueous solution of Borax, the following compound is formed

(A) Boron hydride

(B) Orthoboric acid

(C) Meta boric acid

(D) Pyroboric acid

Q.No. 44 When PbO2 reacts with concentrated HNO3, the gas evolved is

(A) NO2

(B) O2

(C) N2

(D) N2 O

Q.No. 45 Anti-histamine among the following is

(A) Bromopheneramine

(B) Morphine

(C) Amoxycillin

(D) Chloroxylenol

By passing electric current, NaClO 3 is converted into NaClO 4 according to the

f ollowing equation
Q.No. 46
NaClO 3 + H 2 O ⟶ NaClO 4 + H 2

How many moles of NaClO 4 will be f ormed when three Faradays of charge is passed through NaClO 3 ?

(A) 0.75

(B) 1.0

(C) 1.5

(D) 3.0

Q.No. 47 The relationship between Kp, and Kc, is Kp = Kc(RT)An. What would be the value of An for the reaction NH4Cl (s)
NH3 (g) + HCl (g)

(A) 1

(B) 0.5

(C) 1.5

(D) 2

Q.No. 48 The correct set of quantum number for the unpaired electrons of chlorine atom is:

(A) 2, 0, 0, + 1

2

(B) 2, 1, −1, + 1

2

(C) 3, 1, 1, ± 1

2

(D) 3, 0, 0, ± 1

2

Q.No. 49 The pressure of real gases is less than that of ideal gas because of

(A) Intermolecular attraction

(B) Finite size of particles

(C) Increase i the number of collisions

(D) Increase in the kinetic energy of the molecules

Q.No. 50 The TUPAC name of [Co(NH3)4Cl(NO2)]Cl is

(A) tetraamminechloridonitrito-N- cobalt(III) chloride

(B) tetraamminechloridonitrocobalt(I]) chloride

(C) tetraamminechloridonitrocobalt(I) chloride

(D) tetraamminechloridodinitrocobalt(III) chloride

Q.No. 51 At a particular temperature, the ratio of molar conductance to specific conductance of 0.01 M NaCl solution is

(A) 105cm3 mol-1

(B) 105cm2 mol-1

(C) 10 cm3 mol-1

(D) 105cm2 mol-1

Q.No. 52 Addition of excess of AgNO3 to an aqueous solution of 1 mole of PdCl2.4NH2 gives 2 moles of AgCl. The
conductivity of this solution corresponds to

(A) 1:1 electrolyte

(B) 1:3 electrolyte

(C) 1:2 electrolyte

(D) 1:4 electrolyte

Q.No. 53 [Fe(NO2)3 Cl3l and [Fe(O — NO)3 Cl3] shows

(A) Linkage isomerism

(B) Geometrical isomerism

(C) Optical isomerism

(D) Hydrate isomerism

Q.No. 54 The glycosidic linkage involved in linking the glucose units in amylose part of starch is

(A) C1 - C4 β-linkage

(B) C1 - C6 α-linkage

(C) C1 - C6 β-linkage

(D) C1 - C4 α-linkage

Q.No. 55 For the redox reaction x MnO-4 + y H2C2O4 + zH+ ---> m Mn2+ + n CO2 + p H2O The values of x, y, m and n are

(A) 10, 2, 5, 2

(B) 2, 5, 2, 10

(C) 6, 4, 2, 5

(D) 3, 5, 2, 10

Q.No. 56 Which of the following aqueous solution has highest freezing point ?

(A) 0.1 molal Al (SO )
2 4 3

(B) 0.1 molal BaCl 2

(C) 0.1 molal AlCl 3

(D) 0.1 molal NH Cl 4

Q.No. 57 The reaction quotient Q is useful in predicting the direction of the reaction. Which of the following is incorrect ?
′ ′
c

(A) If Q > K , the reverse reaction is favoured
c c

(B) If Q < K , the forward reaction is favoured
c c

(C) If Q = K , No reaction occur
c c

(D) If Q > K , forward reaction is favoured
c c

Q.No. 58 The compound having longest C- Cl bond is

(A)

(B)

(C)

(D) CH2 = CH -Cl

Q.No. 59 Which of the following can be used to test the acidic nature of ethanol?

(A) Blue litmus

(B) Na2CO3

(C) NaHCO3

(D) Na metal

Q.No. 60 When the vapours of tertiary butyl alcohol are passed through heated copper at 573 K, the product formed is

(A) But-2-ene

(B) 2-Butanone

(C) 2-Methyl propene

(D) Butanal

Answer Sheet

Q.No Answer
Q.No. 1 (B)
Q.No. 2 (D)
Q.No. 3 (A)
Q.No. 4 (B)
Q.No. 5 (A)
Q.No. 6 (D)
Q.No. 7 (A)
Q.No. 8 (C)
Q.No. 9 (D)
Q.No. 10 (A)
Q.No. 11 (D)
Q.No. 12 (A)
Q.No. 13 (A)
Q.No. 14 (C)
Q.No. 15 (C)
Q.No. 16 (B)
Q.No. 17 (C)
Q.No. 18 (D)
Q.No. 19 (B)
Q.No. 20 (C)
Q.No. 21 (D)
Q.No. 22 (A)
Q.No. 23 (A)
Q.No. 24 (A)
Q.No. 25 (B)
Q.No. 26 (A)
Q.No. 27 (A)
Q.No. 28 (C)
Q.No. 29 (C)
Q.No. 30 (C)
Q.No. 31 (D)
Q.No. 32 (C)
Q.No. 33 (B)
Q.No. 34 (C)
Q.No. 35 (D)
Q.No. 36 (D)
Q.No. 37 (A)
Q.No. 38 (B)
Q.No. 39 (D)

Q.No. 40 (C)
Q.No. 41 (B)
Q.No. 42 (C)
Q.No. 43 (B)
Q.No. 44 (B)

Q.No. 45 (A)
Q.No. 46 (C)
Q.No. 47 (D)
Q.No. 48 (C)
Q.No. 49 (A)
Q.No. 50 (A)
Q.No. 51 (A)
Q.No. 52 (C)
Q.No. 53 (A)
Q.No. 54 (D)
Q.No. 55 (B)
Q.No. 56 (D)
Q.No. 57 (D)
Q.No. 58 (B)
Q.No. 59 (D)
Q.No. 60 (C)