BHU PMT Chemistry Question Papers 2015 - All students who have applied for admission to MBBS/BDS through Banaras Hindu University (BHU) Pre Medical Test (PMT) can find here previous year solved Chemistry question papers for examination to be held in 2015.
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Institute of Medical Sciences, Banaras Hindu University which is in its 53rd year of existence is the premier medical institution of this country. Over the last decade, it has been consistently ranked amongst the top 20 Medical Colleges of the country and in 2012 was rated as the 6th best Medical Colleges.
1. The hybridization state of C atom in butendioic acid is :
(1) sp2
(2) sp3
(3) both two
(4) sp
2. Which of the following is not a isomer of pentane : (1) n-pentane
(2) 2, 2-dimethy 1 propane
(3) 2, 3-dimethy 1 butane
(4) 2-methy 1 butane
3. The oxidation number of C atom in Ch2CI2 and CCI4 are respectively : (1) -2 and – 4
(2) 0 and – 4 (3) 0 and 4
(4) 2 and 4
4. Which of the following dissolves in lonic solvents : (1) C6H5 (2)
CH3OH (3)
CCI4 (4)
C5H12
5. The conjugate acid of HS is :
(1) S-2 (2)
H2S2
(3) both two (4) none
6. Phenolphthalein of pH range [8-10] is used in which of the following type of titration as a suitable indicator :
(1) NH4OH and HCI
(2) NH4OH and HCOOH
(3) NH4OH and C2H4O2
(4) NaOH and C2O4H2
7. Which of the following is iron are :
(1) Malachite
(2) Hernatite (3) Siderite
(4) Limonite
8. The molar concentration of chloride ions in the resulting solution of 300
ml.of 3.0 M NaCI and 200 ml. of 4.0 M BaCl2 will be : (1) 1.7 M
(2) 1.8 M
(3) 5.0 M
(4) 3.5 M
9. Which of the following has least bond energy : (1) N -2
-
+
2 (2)
N2
(3) N2
(4) N2
10. Which of the following species has highest bond energy : (1) O -2
+
-
2 (2)
O2
(3) O2 (4)
O2
11. Which of the following compound is not aromatic : (1) 1, 3-cyclobutene
(2) pyridine
(3) furane
(4) thiophene
12. Which of the following compound is used as refrigerant : (1) CCI2F2
(2) CCI4
(3) CF4
(4) Acetone
13. Which of the following is weak acid :
(1) C6H6 (2)
CH3-C≡CH (3)
CH2=CH2 (4) CH3-C≡C-CH3
14. L.P.G. mainly consist of the following :
(1) Methane (2) Hydrogen (3) Acetylene
(4) Butane
15. The solubility product of CaCo3 is 5 x 10-9. The solubility will be : (1) 2.5 x 10-5
(2) 7 x 10-5
(3) 2.5 x 10-4
(4) 2.2 x 10-9
16. The outer electronic configuration of alkali earth metals is : (1) nd10 (2)
ns1
(3) np6
(4) ns2
17. The nature of 2, 4, 6-trinitrophenol is :
(1) Neutral
(2) Basic
(3) Acidic
(4) Weak basic
18. Which of the following group is sharp ortho and para directive : (1) –C6H5 (2)-OH
(3)
–CH3 (4)
–CI
19. By which of the following process hydrocarbons are found from petroleum : (1) combustion
(2) fractional distillation
(3) addition
(4) all above
20. A sample of petroleum contains 30% n-heptane, 10% 2-methyl hexane and 60% 2, 2, 4-trimethyl pentane, the octane no. of this sample will be : (1) 30%
(2) 60%
(3) 10%
(4) 70%
21. In which of the following halogens p-electrons does not take part in resonance :
(1) CH2=CH-CH2Cl
(2)
BrC6H5
(3) C6H5Cl
(4)
CH2=CHCl
22. Which of the following statement is false :
(1) 40% solution HCHO is known as formalin
(2) HCHO is least reactive in its homologous series
(3) The B.P. of isovarelaldehyde is less than n-varelaldehyde (4) The boiling point of ketones are higher than that of aldehydes 23. If n + ιι = 8 then the expected no. of orbitals will be : (1) 4
(2) 9
(3) 16
(4) 25
Alc. KOH 2Cl2 Ca(OH)2
24. A B C here the compound C will be : (1) Lewsite
(2) Westron
(3) Acetylene tetra chloride (4) Both 2 and 3
25. Which of the following is least hydrolysed :
(1) BeCl2 (2)
MgCl2 (3)
CaCl2 (3)
BaCl2
26. The laughing gas is :
(1) N2O4
(2) NO
(3) N2O (4)
N2O5
27. The hydrogen ion concentration of a solution is 3.98 x 10-6 mole per liter. The pH value of this solution will be :
(1) 6.0
(2) 5.8
(3) 5.4
(4) 5.9
28. The reaction of sodium acetate and sodalime gives : (1) Butane
(2) Ethane
(3) Methane (4) Propane
29. Which of the following acids does not contain – COOH group : (1) Carbamic acid
(2) Barbituric acid
(3) Lactic acid
(4) succinnic acid
30. Which of the following compound of xenone does not exists : (1) XeF6 (2)
XeF4 (4)
XeF5 (4)
XeF2
31. FeSO4, 7H2O is :
(1) Mohr’s salt (2) Blue vitriol
(3) Green vitriol (4) White vitriol
32. The solution of BiCl3 in dil. HCI when diluted with water white precipitate is formed which is :
(1) Bismith oxychloride
(2) Bismith oxide
(3) Bismith hydroxide
(3) none of these
33. The strongest acid is :
(1) acetic acid
(2) trichloroacetic acid
(3) dichloracetic acid
(4) monochloroacetic acid
34. The false statement regarding alkane is :
(1) This does not perform polymerization reaction
(2) This does not gives elimination reaction
(3) It does not disappear the colour of dilute KMnO4 solution (4) It does not decolourise bromine water
35. Which of the following is strongest base :
(1) C6H5NH2
(2)
CH3NH2
(3) NH3 (4)
CH3CONH2
36. Which of the following aromatic compound gives sulphonation reaction very easily :
(1) Chlorobenzene (2) Nitrobenzene
(3) Toluene
(4) benzene
37. The geometry of I3- is :
(1) Triangular
(2) Linear
(3) Tetrahedral
(4) T-shape
38. The half life of a radio active element is 140 days. 1 gm. of this element after 560 days will become :
(1) 1 gm (2) 1 gm
(3) 1gm.
(4) 1 gm.
16 4 8 2
39. The volume concentration of hydrogen peroxide 6.8% concentration will be : (1) 5
(2) 11.2
(3) 22.4
(4) 20
40. Which of the following on combustion give maximum energy : (1) Ethane
(2) Propane
(3) Methane (4) Butane
Anhy. AICI3
41. C6H6 + CH3CI C6H5CH3 + HCI The name of above reaction is : (1) Gattermann
(2) Reimer-tiemann
(3) Friedel-Craft
(4) Cannizaro
42. The oxidation state of Cr in K2Cr2O7 is :
(1) + 4
(2) + 3
(3) + 6
(4) + 5
43. The natural rubber is the polymer of :
(1) 1, 3- butadiene
(2) polyamide (3) isoprene (4) none of these
44. Nylone-66 is a :
(1) polyester (2) polyamide
(3) polyacrylate
(4) none of these
45. 2NO(g) + CI2 (g) →→
2 NOCI The equilibrium constant for this reaction is :
←
←
(1)
Kc = [NOCI]2
(2) Kc = [NOCI]2___
[NO]2[CI2}2 [2NO]2[CI2]
(3) Kc = [NOCI]2 __ (4)
Kc = [2NOCI]____
[NO]2 [CI2] [2NO][CI]
A
46. C6H6 + CO + HCI C6H5CHO + HCI here A is : (1) anhydrans ZnO
(2) V2O5/4500 C
(3) anhydrous AICO3 (4) solid KOH
47. The values of for HCN and CH3COOH are 7.2 x 10-10 and 1.75 x 10-5 (at 250
C) respectively. The strongest acid amongst them is : (1) CH3COOH (2) HCN
(3) both
(4) none of these
48. In which of the following carbon atom (asterisk) is asymmetric : (1) CH3CH2CH (CH3) CH2OH
(2) CH3CH2CH (CH3) CHOH
(3) CH3CH2CH2CH2CH2OH
(4) CH3CH2CH (CH3)CH2OH
49. Benzene reacts with CH3COCI in presence of Lewis acid AICI3 to form : (1) Acetophenone
(2) Toluene
(3) Benzyl Chloride (4) Chlorobenzene
50. Which of the following is reducing agent :
(1) H2S (2)
HNO3 (3)
H2O (4)
K2Cr2O7
51. In which of the following alkyl chloride the possibility of SN1 reaction mechanism is maximum :
(1) (CH3)2CHCI (2)
(CH3)3C-CI (3)
CH3CI (4)
CH3CH2CI
52. The energy produced realated to mass decay of 0.02 amu is : (1) 28.2 MeV
(2) 931 MeV (3) 18.62 MeV
(4) none of these
53. The mole of hydrogen ion in 50 ml. of 0.1 M HCI solution will be : (1) 5 x 102
(2) 5 x 10-3
(3) 5 x 103
(4) 5 x 10-2
54. Petroleum is mainly consist of :
(1) Aliphatic alcohol
(2) Aromatic hydrocarbon
(3) Alipnetic hydrocarbon
(4) None of these
∆∆
55. C6H6OCH3 + HI …….. + ……….. The products in the above reaction will be :
(1)
C6H5I+CH3OH
(2)
C6H5CH3+HOI
(3)
C6H5OH+CH3I
(4)
C6H6+CH3OI
56 F3 is :
(1) Bronsted base
(2) Lewis base (3) Lewis acid (4) Bronsted acid
57. Which of the following compound gives violet colour with FeCI3 solution: (1) Benzaldehyde
(2) Aniline
(3) Nitrobenzene
(4) Phenol
58. Hypo solution forms which of the following complex compound with AgCI : (1)
Na5[Ag(S2O3)3]
(2)
Na3[Ag(S2O3)2]
(3)
Na2{Ag(S2O3)2]
(4)
Na3[Ag(S2O3)3]
59. Molecular oxygen is :
(1) ferro magnetic
(2) diamagnetic
(3) para magnetic
(4) non magnetic
60. Bonds in acetylene are :
(1)
2π bonds (2) one π bond
(3) 3π bonds (4) none of these
61. The false statement for Griynaed reagent is :
(1) It gives tertiary alcohol with acetamide
(2) It gives tertiary alcohol with acetone
(3) It gives secondary alcohol with acetaldehyde
(4) It gives primary alcohol with formaldehyde
62. Which of the following alkane exists is liquid state at normal temperature : (1)
C20H42 (2)
C3H8 (3)
C8H18 (4)
CH4
63. The solubility of AgCI at 250 C will be maximum in : (1) Potassium chloride solution
(2)
AgNO3 solution
(3)
Water
(4) All above
64. The weight of a benzene molecule is :
(1) 78 gm.
(2) 7.8 gm.
(3) 13 x 10-23
(4) none of these
65. CuFeS2 is :
(1) iorn pyrites
(2) malachite (3) chalcosite (4) chalcopyrites
66. Primary halides follow the following reaction mechanism : (1)
SN1 (2)
SN2
(3) both
(4) none of these
67. C and Si belong to the same group of periodic table, CO2 is a gas and SiO2 is a : (1) liquid
(2) gas
(3) solid
(4) none of these
68. H2S is a gas while H2O is a liquid because :
(1) there is association due to hydrogen bonding
(2) bond energy of OH high
(3) the ionization potential of oxygen is high
(4) the electro negativity of oxygen is high
69. “The negative part of the molecule adding to the double bond goes to that unsaturated asymmetric carbon atom which is linked to the least number of hydrogen atoms.” This statement is related to :
(1) Markownikoff’s law
(2) Peroxide effect
(3) Bayer’s law of distortion
(4) none of these
70. The conjugate base of NH3 is :
(1)
N
-
+
+
2H4 (2)
NH2 (3)
NH4 (4)
NH2
71. (a) N
π
σ
2 and (b) C2H2. The nos. of ππ
and σ
bond in the molecules are respectively :
(1) (a) 2,2 (b) 2,2
(2) (a) 1,2 (b) 2,1
(3) (a) 2,1 (b) 2,3
(4) (a) 2,1 (b) 2,1
72. In which of the following compound there are maximum no. of sp2 hybrid C
atoms:
(1)
Benzene
(2)
1,3,5-hexatriene
(2) 1,2,4-hexatriene (4) both 1 and 2
73. The shape of the molecule having hybrid orbitals of 20% character will be : (1) octahedral
(2) tetrahedral
(3) square planer
(4) triangular bipyramidal
74. The pH of a solution is 5. If the dilution of this solution is increased by 100 times, the pH value will be :
(1) 5
(2) 7
(3) 9
(4) 8
75. The required amount of oxygen for combustion of 20 ml. of gaseous hydrocarbon is 50 ml. The hydrocarbon will be :
(1)
C2H2 (2)
C2H4 (3)
C2H6 (4)
C3H4
76. The formula of Celestine is :
(1) SrSO4 (2)
SrCO3
(3) SrO
(4) SrCl2
77. CuCl
→
2 +
→
Cu + Cl2. The required amount of electricity for this reaction is : (1) 4 faraday
(2) 2 faraday (3) 1 faraday (4) 3 faraday
78. Nitrogen does not forms NF5 because :
(1) The bondenergy of N≡N is very high
(2) Vaccent d-orbitals are not present
(3) N belongs to V group
(4) There is inert effect
79. The normal temperature when raised by 100 C, the rate of reaction will be : (1) lowered by 2 times
(2) increased by 2 times
(3) lowered by 10 times
(4) increased by 10 times
80. Which of the following gives red precipitate with ammonical cuprous chloride :
(1) Propane (2) Ethane
(3) Methane (4) Acetylene
81. [Cu(NH3)4]2+ snows the following hybridization : (1) dsp2 (2)
sp3d (3)
dsp3 (4)
sp3
82. A solution contains CI-, I- and S O 3-
4 ions in it. Which of the following ion is
capable to precipitate all of above when added in this solution : (1) Pb2+ (2)
Ba2+ (3)
Hg2+ (4)
Cu2+
83. Fool’s gold is :
(1) Cu2S (2)
FeS2 (3)
Al2O5 (4)
CuFeS2
84. In which of the following compound the central atom is in sp2 hybrid state : (1) OF
+
2 (2)
HgCl2 (3)
XeF2 (4)
NH2
85. The number of alkenyl groups possible from C
-
4H7 are :
(1)
7
(2) 5
(3) 3
(4) 8
86. The tetraethyl lead mixed in petrol is works as : (1) Cooling agent
(2) Anti knocking agent
(3) Bleaching agent
(4) None of these
87. The alkaline hydrolysis of ester is known as : (1) dehydrogenation (2) dehydration (3) esterification (4) saponification
88. The degree of ionization of 0.4 M acetic acid will be : (Ka = 1.8 x 10-5) (1) 6.71 x 10-3 (2)
1.6x10-3
(3) 0.4x1.8x10-5 (4)
1.8x10-5
89. Haber process is used for production of which of the following : (1) NH3 (2)
HNO3 (3)
H2SO4 (4)
O3
90. The pka value of phenolphthalein is 9.1 and the pH range is 8-10. In which of the following titrations it can be used as an indicator : (1) NH4OHand HCI
(2) NH4OH and CH3COOH
(3) NaOH and HCI
(4) NH4OH
91. Number of electrons in a one molecule of CO2 : (1) pb2+ (2)
Hg2+ (3)
Ba2+ (4)
Cu2+
92. Which of the following species shows the maximum magnetic moment : (1) Mn+6 (2)
Ni2+ (3)
Fe3+ (4)
Ag+
93. K sp value of CaF2 is 3.75 x 1011 The solubility will be :
(1) 1.45x10-11 mol/litre-1
(2) 3.45x10-4 mol/liter-1
(3) 2.05x10-4 mol/liter-1
(4) 3.75 x 10-11 mol/liter-1
94. When Pb3O4 is heated with dilute H N O3 it gives : (1) pbO2 and pb(NO3)2
(2) pbO and pb(NO3)2
(3) pbO2
(4) pbO
95. C-H bond length is least in :
(1) Acetylene (2) Methane (3) Ethylene (4) Ethane
96. The minimum nos. of carbon atoms in ketones which will show chain isomerism will be :
(1) Seven
(2) four
(3) six
(4) five
97. Which of the following organic compound could not be dried by anhydrous CaCI2 :
(1) ethanol
(2) benzene
(3) chloroform
(4) ethyl acetate
98. Which of the following compound forms white precipitate with bromine water :
(1) Nitrobenzene
(2) Phenol
(3) Benzene
(4) all above
99. Gypsum is :
(1) CaSO4.H2O (2)
CaSO4. 2H2O
(3) 2CaSO4. 2H2O (4)
CaSO4
100.Which of the following carbonium ion is most stable :
+ +
(1) CH3-CCH3 (2)
CH3CH2
CH3
+ +
(3) CH30CH-CH3 (4)
CH3
ANSWER SHEET
1.(2) 2.(3) 3.(3) 4.(2) 5.(2) 6.(4) 7.(1) 8.(3) 9.(1) 10.(4) 11.(1)
12.(1) 13.(2) 14.(4) 15.(2) 16.(4)
17.(3)
18.(2)
19.(2)
20.(2) 21.(1) 22.(2)
23.(3) 24.(4) 25.(4) 26.(3) 27.(3)
28.(3)
29.(2)
30.(3)
31.(3) 32.(1) 33.(2)
34.(3) 35.(2) 36.(3) 37.(2) 38.(1)
39.(4)
40.(4)
41.(3)
42(3) 43.(3) 44.(2)
45.(3) 46.(3) 47.(1) 48.(1) 49.(1)
50.(1)
51.(2)
52.(1)
53.(2) 54.(3) 55.(3)
56.(3) 57.(4) 58.(3) 59.(3) 60.(1)
61.(1)
62.(3)
63.(3)
64.(3) 65.(4) 66.(1)
67.(3) 68.(1) 69.(1) 70.(2) 71.(3)
72.(4)
73.(4)
74.(2)
75.(1) 76.(2) 77.(2)
78.(2) 79.(2) 80.(4) 81.(1) 82.(1)
83.(2)
84.(4)
85.(4)
86.(2) 87.(4) 88.(1)
89.(1) 90.(3) 91.(1) 92.(3) 93.(3)
94.(1)
95.(1)
96.(4)
97.(1) 98.(2) 99.(2)
100.(1)
1. A body of mass 20 gm moving at 200 m/sec passes through a plank and its velocity reduces to 100 m/ sec. In passing through the plank, what part of its K.E. is lost:
a. 1/4
b. 1/2
c. 3/4
d. 2/3
2. The tension in the string revolving in a vertical circle with a mass m at the end which is at the lowest position
a. mv2/r
b. (mv2/r)- mg
c. (mv2/r)+ mg
d. mg
3. A bomb of mass 12 kg explodes into two pieces of mases 4 kg and 8 kg. The velocity of mass 8 kg is 6 m/sec. The kinetic energy of mass 4 kg will be :
a. 48 joule
b. 32 joule
c. 24 joule
d. 288 joule
4. A block of mass M slides along the sides of a flat bottomed bowl. The slides of the bowl are frictionless and the base has a coefficient of friction 0.2. If the block is released from the top of the side which is 1.5 m high, where will the block come to rest. Given, the length of the base is 15 m:
a. 1 m from P
b. Mid point of flat part PQ
c. 2 m from P
d. at Q
5. The power of a pump, which can pump 200 kg of water to a height of 200 m in 10 sec is (g=10 m/s2):
a. 40 kW
b. 80 kW
c. 400 kW
d. 960 kW
6. A long spiral sprig is stretched by 2 cm, its P.E. is U. If the srping is stretched by 10 cm, then the P.E. of the spring is :
a. U/ 25
b. U / 5
c. 5 U
d. 25U
7. Two springs have their force constant as k1 and k2 (k1 > k2). When they are stretched by the same force:
a. No work is done in case of both the springs
b. Equal work is doen in case of both the springs
c. More work is done in case of second spring
d. More work is done in case of first spring
8. A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when :
a. The elevator is stationary
b. The elevator cable breaks and it falls freely towards earth
c. The elevator accelerates downwards
d. The elevator accelerates upwards
9. Friction force is
a. self adjustable
b. not self adjustable
c. both (a) and (b)
d. none of these
10. A body of mass 2 kg is hung on a spring balance mounted vertically in a lift. If the lift moves up with a constant velocity of 2 m/sec, the reading on the balance wil be
a. 2 kg
b. 4 kg
c. Zero
d. 1 kg
11. A boy of 50 kg is standing in a lift moving down with an acceleration 9.8 m/s2. The apparanet weight of the boy is
a. zero
b. 50N
c. 50×9.8N
d. 50/9.8 N
13. Maximum value of force of friction is called
a. limiting friction
b. rolling friction
c. normal friction
d. kinetic friction
14. The linear momentum p of a body moving in one dimension varies with time according to the equation p = a+bt2 where a and b are positive constants. The net force acting on the body is:
a. proportional to t2
b. a constant
c. proportional to t
d. inversely proportional to t
15. Three blocks of masses m1, m2 and m3 are connected by massless strings as shown on a frinctionless table. They are pulled with a force T3 = 40 N. If m1 = 10 kg, m2 = 6 kg, and m3 = 4 kg, the tension T2 will be:
a. 20N
b. 40 N
c. 10 N
d. 32 N
16. A box is lying on an inclined plane. If the box starts sliding when the angle of inclination is 60°, then the coefficient of static friction of the box and plane is
a. 2.732
b. 1.732
c. 0.267
d. 0.176
17. A machine gun shoots a 40 g bullet at a speed of 1200 m/s. The man operating the gun can exert and average force of 144 N at the most. How many bullets (maximum number) can be shot per sec?
a. 3
b. 4
c. 2
d. 6
18. A body of mass 50 kg is pulled by a rope of length 6 m on a frictionless surface by a fore of 106 N applied to the other end. The linear density of the rope is 0.5 kg/m. The force acting on 50 kg mass is
a. 50 N
b. 100 N
c. 150 N
d. 200 N
19. A constant force acting on a body of mass 3.0 kg changes its speed from 2.0 ms–1 to 3.5 ms–1 in 25 seconds. The direction of motion of the body remains unchanged. What is the magnitude of force?
a. 0.09 N
b. 0.045 N
c. 0.18 N
d. None of these
20. The average force necessary to stop a hammer with 25 N-s momentum is 1000 N. The time required is
a. 25 s
b. 2.5 × 104 s
c. 0.25 s
d. 0.025 s
21. A man of mass 60 kg is standing on a spring balance inside a lift. If the lift falls freely downwards, then the reading of the spring balance will be
a. 60 kgf
b. More than 60 kgf
c. Less than 60 kgf
d. Zero
22. When a wagon is pulled by a horse, the force that causes the horse to move forward is the force
a. He exerts on the wagon
b. The wagon exerts on him
c. The ground exerts on him
d. He exerts on the ground
23. A machine gun fires 10 bullet/s, each of mass 10 g, the speed of each bullet is 20 cm/s, then force of recoil is
a. 200 dyne
b. 2000 dyne
c. 20 dyne
d. none of these
24. A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one. Then the true statement about the scale reading is
a. Both the scales read M kg each
b. The scale of the lower one reads M kg and of the upper one zero
c. The reading of the two scales can be anything but the sum of the reading will be M kg
d. Both the scales read M/2 kg
25. A 40 N block is supported by two ropes. One rope is horizontal and the other makes an angle of 30° with the ceiling. The tension in the rope attached to the ceiling is approximately
a. 80 N
b. 40 N
d. 34.6 N
d. 46.2 N
26. Phenolphthalein of pH range [8-10] is used in which of the following type of titration as a suitable indicator :
a. NH4OH and HCI
b. NH4OH and HCOOH
c. NH4OH and C2H4O2
d. NaOH and C2O4H2
27. The oxidation number of C atom in Ch2CI2 and CCI4 are respectively :
a. -2 and – 4
b. 0 and – 4
c. 0 and 4
d. 2 and 4
28. Which of the following compound is not aromatic :
(1) 1, 3-cyclobutene
(2) pyridine
(3) furane
(4) thiophene
29. L.P.G. mainly consist of the following :
a. Methane
b. Hydrogen
c. Acetylene
d. Butane
30. A sample of petroleum contains 30% n-heptane, 10% 2-methyl hexane and 60% 2, 2, 4-trimethyl pentane, the octane no. of this sample will be :
a. 30%
b. 60%
c. 10%
d. 70%
31. The hydrogen ion concentration of a solution is 3.98 x 10-6 mole per liter. The pH value of this solution will be :
a. 6.0
b. 5.8
c. 5.4
d. 5.9
32. Which of the following acids does not contain – COOH group :
a. Carbamic acid
b. Barbituric acid
c. Lactic acid
d. succinnic acid
33. The solution of BiCl3 in dil. HCI when diluted with water white precipitate is formed which is :
a. Bismith oxychloride
b. Bismith oxide
c. Bismith hydroxide
d. none of these
34. Which of the following aromatic compound gives sulphonation reaction very easily :
a. Chlorobenzene
b. Nitrobenzene
c. Toluene
d. benzene
35. The natural rubber is the polymer of :
a. 1, 3- butadiene
b. polyamide
c. isoprene
d. none of these
36. The volume concentration of hydrogen peroxide 6.8% concentration will be :
a. 5
b. 11.2
c. 22.4
d. 20
37. Benzene reacts with CH3COCI in presence of Lewis acid AICI3 to form :
a. Acetophenone
b. Toluene
c. Benzyl Chloride
d. Chlorobenzene
38. The mole of hydrogen ion in 50 ml. of 0.1 M HCI solution will be :
a. 5 x 102
b. 5 x 10-3
c. 5 x 103
d. 5 x 10-2
39. F3 is :
a. Bronsted base
b. Lewis base
c. Lewis acid
d. Bronsted acid
40. The false statement for Griynaed reagent is :
a. It gives tertiary alcohol with acetamide
b. It gives tertiary alcohol with acetone
c. It gives secondary alcohol with acetaldehyde
d. It gives primary alcohol with formaldehyde
41. Primary halides follow the following reaction mechanism :
a. SN1
b. SN2
c. both
d. none of these
42. “The negative part of the molecule adding to the double bond goes to that unsaturated asymmetric carbon atom which is linked to the least number of hydrogen atoms.” This statement is related to :
a. Markownikoff’s law
b. Peroxide effect
c. Bayer’s law of distortion
d. none of these
43. The shape of the molecule having hybrid orbitals of 20% character will be :
a. octahedral
b. tetrahedral
c. square planer
d. triangular bipyramidal
44. Which of the following gives red precipitate with ammonical cuprous chloride :
a. Propane
b. Ethane
c. Methane
d. Acetylene
45. The pH of a solution is 5. If the dilution of this solution is increased by 100 times, the pH value will be :
a. 5
b. 7
c. 9
d. 8
46. The tetraethyl lead mixed in petrol is works as :
a. Cooling agent
b. Anti knocking agent
c. Bleaching agent
d. None of these
47. Fool’s gold is :
a. Cu2S
b. FeS2
c. Al2O5
d. CuFeS2
48. The alkaline hydrolysis of ester is known as :
a. dehydrogenation
b. dehydration
c. esterification
d. saponification
49. C-H bond length is least in :
a. Acetylene
b. Methane
c. Ethylene
d. Ethane
50. Which of the following compound forms white precipitate with bromine water :
a. Nitrobenzene
b. Phenol
c. Benzene
d. all above
