Karnataka Diploma CET 2017 Question Paper Environmental Engineering

DIPLOMA - COMMON ENTRANCE TEST-2017
COURSE DAY: SUNDAY DATE:02-07-2017
EN ENVIRONMENTAL TIME : 10.00 a.m. to 1.00 p.m.
MAXIMUM MARKS TOTAL DURATION MAXIMUM TIME FOR ANSWERING
180 200 MINUTES 180 MINUTES

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A-1 212030
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EN-Al

PART — A

APPLIED SCIENCE

1. The S.I. unit of Coefficient of Viscosity is
(A) Poise (B) NSm

(C) NS- I m2 (D) NS 111-2

The prefix used for 10' 9 is
(A) Mcga (B) Tera

(C) Giga (D) Hecta

3. The physical quantity which has the dimensional formula [MI.,(1--] is

(A) Force (B) Surface tension

(C) Viscosity (D) Work

4. The least count of slide callipers is given by

(A) I MSD + 1 VSD (B) 1 MSD x 1 VSD
(D) .1 MSD
(C) 1 MSD — 1 VSD
1 VSD

5. The product of force and time is
(A) Momentum (B) Moment

(C) Impulse (D) Acceleration

6. The change in position of a particle in a particular direction is referred to as

(A) Speed (B) Displacement

(C) Velocity (D) Acceleration

A-1 2 EN

7. The equation of motion of a body for distance travelled ' S n ' in the '11'1" second is given by

(A) Sn = u + (2n -1) (B) = u - (2n -1)

(C) = u + (2n +1) (D) = u - ',)11 (2n +1)

8. A bullet of mass 0.01 kg is fired with a velocity of 960 ms-I from a rifle of mass 3 kg, the
velocity of recoil of rifle is

(A) -320 ms-1 (B) - 0.32 ms-1

(C) ins-1 (D) -32 ms-I

9. One of the following is not a scalar quantity :

(A) Mass (B) Density

(C) Force (D) Speed

10. If a body fixed about a point rotates in clockwise direction, the moment of force is measured
as

(A) Positive (B) Negative
(C) Zero (D) Equal

11. The resultant magnitude of two fbrces P and Q acting in same line and in same direction is
(A) P - Q (B) P +Q

(C) Q - P (D)

EN 3 A-1

12. The resultant magnitude of two forces 6 N and 8 N acting at right angles to each other is
A 111/1 (B) ION
rx I Nl/ 1

(C) 48 N (D) 14 N

13. The value of resultant magnitude of two forces acting at a point is maximum, when the
angle between the two forces is

(A) 0° (B) 90°

(C) 180° (D) 45°

14. Rise of liquid in a capillary tube is due to

(A) Energy (B) Viscosity

(C) Surface tension (D) Pressure

15. The ratio of volume stress to volume strain is called

(A) Bulk modulus (B) Youngs modulus

(C) Rigidity modulus (D) Poisson's ratio

16. The reciprocal of bulk modulus of elasticity is called

(A) Compressibility (B) Rigidity

(C) Plasticity (D) Modulus of elasticity

17. The force of cohesion is maximum in

(A) Solids (B) Gases

(C) Liquids (D) Plasma

A-1 4 EN

18. The value of surface tension is 80 dyne/cm. What will be its value in Nm -1 ?

(A) 8 x102 Nm-1 (B) 80 Nm l

(C) 8 x10-/ Nm (D) 8 x103 Nm-1

19. Pressure at the bottom of a container having base area of 10 m2 tilled with water to a height
of 10 m is

(A) 9.8 x 104 Pa (B) 980 x 104 Pa

(C) 9.8 x 10 4 Pa (D) 980 x 10-4 Pa

20. 100 °C when expressed in absolute scale is

(A) 100 K (B) 0 K

(C) 273 K (D) 373 K

21. Gas law which gives the relation between pressure and volume changes is

(A) Boyle's law (B) Charles' law
(C) Gay-Lussac's law (D) IIooke's law

22. Amount of heat required to raise the temperature of one gram of water through 1 °C is
(A) Heat capacity (B) Conductivity
(C) Calorie (D) Joule

23. An example of longitudinal wave is

(A) Sound waves (B) Waves on the surface of water
(C) Light waves (D) Electromagnetic waves

EN 5 A-1

24. The relation between velocity of sound v, and absolute temperature T is

(A) V cr T (B) v—
T

(C) v T (D) v x T 2

25. The distance between a node and the next antinode in a stationary wave is equal to
(A) one wavelength (B) half wavelength
(C) twice wavelength (D) one fourth wavelength

26. Damage caused by marching military columns to the suspension bridge is due to

(A) Echo (B) Resonance
(C) Beats (D) Interference

27. During forced vibrations, if the forced frequency is F1 and natural frequency is F, , the body
resonates if

(A) Fi > (B) >

(C) =2.5F, (D) Fi =F,

28. The fundamental frequency of transverse vibrations of the stretched string is inversely
proportional to
(A) tension (B) length of string
(C) square root of tension (D) square root of length of string

29. Minimum length of a hall to produce an echo.is
(A) 50 m (B) 34 m
(C) 25 m (D) 17 In

A-1 6 EN

30. The property of light that Huygen's wave theory could explain is

(A) Polarisation (B) Photoelectric effect

(C) Interference (D) Compton effect

31. The spectrum of black body radiation is successfully explained by

(A) Newton's corpuscular theory of light

(B) Huygen's wave theory of light

(C) Maxwell's electromagnetic theory of light

(D) Planck's quantum theory of light

32. For constructive interference of light, the path difference should he

2nd,_
(A) (B) (2rt +1) —`

(C) (2n +1)— (D) (2n 4 1)
3

33. Two very close objects arc just resolved if the central maximum of one object is on
(A) central maximum of another

(B) first minimum of another

(C) beyond second minimum of another

(D) between central maximum and first minimum of another

34. The light is incident at polarising angle O and the angle of refraction is r, then

(A) Op+ r = 0° (B) Op+ r = 90°

(C) 011+ r = 180° (D) 0 + r = 360°

EN 7 A-1

35. Minimum energy required to remove an electron from the metal surface is called
( A)l L';,- ,1-;‘, (B) potential energy

(C) Work function (D) Energy function

36. When the size of the scattering particle is small, the intensity of scattered light is inversely
proportional to
(A) fourth power of wavelength (B) square of wavelength
(C) square root of wavelength (D) cube of wavelength

37. Time for which an atom stays in metastable state is of the order of
(A) Seconds (B) Milli-seconds
(C) Micro-seconds (D) Nano-seconds

38. If an element emits fi-ray then its atomic number
(A) increases by one (B) decreases by one
(C) remains same (D) decreases by two

39. If the concentration of ions is more than 10-7 gm ion per litre, the solution is
(A) Base (B) Acid
(C) Neutral (D) Both Acid and Base

40. A galvanic cell is one in which
(A) chemical energy produce electric energy
(B) electric energy produce chemical energy
(C) chemical energy will not produce electric energy
(D) electric energy will not produce chemical energy

A-1 8 EN

PART — B
APPLIED MATHEMATICS

1 3 3
41. The value of x if 2 x 3 = 0 is
3 4 3

(A) 0 (B) —3

(C) 3 (D) 18

42. The value of x, if 4x + y = 7, 3y + 4z = 5 and 3z +5x = 2 is

(A) 0 (B) 1

(C) 3 (D) —1

_
2 —1
43. if A= , then A-1 is
3 —4

1 —4 —3 —4 1]
(A) (B) —1
5 1 2 5 —3 2

—4 — 3- 1 —4 1
(C) — (D) —
11 1 2 11 —3 2

2 —1
44. The characteristic equation of the matrix A = is
5 —6

(A) A2 +8A — 71=0 (B) A2 + 4A —171=0

(C) A2 + 4A + 71=0 (D) A2 + 4A — 71= 0

EN 9 A-1

31 5 11
45. If + A= ,then A is
L' -1 -J
3 -21
(A) (B)
0] 0
3 0 31
(C) (D)
2 0

46. The middle term of the expansion of I is
X,
24 r. 110 .12 24 12 12
(A) (B) C 11 2 x
(C) 24 c 10_1:10 -)4 C 212.
(D) -

i 4 is
47. The term independent of.v ____
3x)

(A) 9 C6(4)6 (B) 9 (3)-6
(4 'v (3 6
6
(D)
\,

48. If 3i - 2j + k, i - 3j + 5k, 2i - 4k are the sides of a triangle, then the triangle is
(A) Right angled triangle (B) Equilateral triangle
(C) Isosceles triangle (D) Isosceles right angled triangle

49. If a = (2, -1, 4) and h = -3, 4), then projection of -a* on b is
23
(A) (B) — _
/29
-01
-23 --23
(C) (D)
v 29

A-1 10 EN

50. The sine of the angle between the vectors (2i - 2j + k) and 2i + j 2k is

(A) V65 (B)
3 -\/11

V65
(C) (D) J-63

tan-4 + coriu
51. If x sin2 45 = then the value of .v is
sin45+ cos245
(A) 4 (B)
(C) 6 (D) 8

4 1 Tr it 3 7C . 7C
52. The value of -sec-
3 - -cosec- - + - tan - - - 2 sin- is
3 6 4 4 3
53
(A) 11 (B)
12 12
7
(C) (D) -—
12 12

53. The value of
( 3n
sec +0
sin (90-0) 2 tan (180-0)
+ is
cos (360-0) cosec (n +0) tan (-0)
(A) 1
(C) 3

54. The value of cosec 43 cot 43 cot 47 cos 47
(B) 0
(D) 2

EN 11 A-1

The value o f • tan 69° + tan 66°
55.
1- tan 69° tan 66°
(A) 1 (B) -1
(C) 0 (D)

A
56. If tan = x then sin A + tan A is

4x 4.v
(A) (B)
x2 1 + x2
4.v 4x
(C) (D)
1+ .v4

57. The value of sin 70°- sin 50° - sin 10° is
(A) 1 (B) 0
(C) -1 (D)

58. sin x is also equal to

(A) cosec -I (B) cosec x
x
1
(C) cosec-i x (D)
sin x

59. Centroid divides the median in the ratio
(A) 2 : 1 (B) 1 : 2
(C) 1 : (D) 1 : 4

60. The co-ordinates of a point which divides the line join of the points (a + b, a - b) and
(a - b, + b) in the ratio 2 : 3 is
5a +5b 5a - 5b a+ba-
( A) (B)
5 5 5 5
5a + b 5a — b 5a ---- b a + 5b
(C) (D)
5 5 5 5

A-1 12 EN

61. The equation of straight line whose intercepts are 3 and 5 on the axes is
(A) 5x — 3y = 15 (B) 5x + 3y = 15
(C) 5x + 3y = 1 (D) 15x+ 15y= 1

1
62. The angle between the lines whose slopes are 3 and _ respectively is

(B)

63. The equation of the straight line passing through (2, 3) and x intercept is twice its y intercept
is
(A) x + 2y = 8 (B) x — 2y = 8
(C) x + y= 4 (D) 2.v + 2y = 8

64. The equation to the line passing through the point (-6, 7) and parallel to the line joining
(3, 4) and (6, —8) is
(A) 4x y + 31 =0 (B) + 4y — 1 =0
(C) — 4y + 1 =0 (D) 4x+ y+ 17 = 0

65. lim (scc 0 — tan 0) is equal to
0 —*Tr/2
(A) 0 (B) 1

(C) (D) it

x—4
66. lirn is equal to
—*4 3_

(A) 3 (B) 9
(C) 6 (D) 0

EN 13 A-1

y is
67. If y (1 + logx , thenm̀a
=
dx

(A) 5(1012,x) 4 (B) (1 + loF4x) 4

(C) 5(1 + log x)4 (D) Si4 102X

68. If x = t and y - sin- t, then dv
- is
dv
(A) -1 (B) 1

(C) I (D)
1-v1 -t -

dy
69. If v = x log y, then is
dv

log x l log y
(A) (B)
x- y x- y

log y' log
(C) (D)
x-y Y X

x
70. If y = + I ,n the dy is
x+2 dx
1 ").v +3
(A) (x+_2)_ (B) ,
(x+2)-

1 "-)x -3
(C) , (D) ,
(x+2)- (x + 2)-

71. The equation of tangent to the curve y2 = 4x at (1, 2) is
(A) .x- i y - 3 = 0 (B) x y + 1 =0
(C) 2x - y = 0 (D) 2x + y-4 0

A-1 14 EN

72. The maximum value of 7 — 8x — 2x2 is
(A) 15 (B) —4
(C) —2 (D) 31

73. The value of f log 2x dx is

(A) x lot.12x + x + C (B) x log 2.v —x- + C
1 ) 1
(C) - +C (D —+C
2.1

74. The value of f sec4 x • tan x dx

sec4x
(A) +C (B) 4 see4x + C
4
4
tan x
(C) 3 sec-x + C (D) + C
4

75. The value of f x log x dx is
7 x2 7
X X". x-
(A) loo x +C (B) ? log x + +C
b 7 7
7 2
X1 X X
(C) —
7 log x +C (D) ? log x + +C
4 4

74
76. itan 2 x dx is equal to

(A) — —1 (B) 1 —
4 4
2
(C) (D) 1
16 16

EN 15 A-1

77. The value of f x-V1 — .v2 is

(A) -- (B) 0

(C) :JD (D)

78. The volume generated by revolving the line y = x + 1 about the .v-axis between the ordinates
x 0 and _V = 2

n I0
(A) units (B) units
3

26
(C) - units (D) 4 units
3

)
d y_ dy
79. The degree and order of the differential equation - 1+ are
dv- dv

(A) 2 and 1 (B) 1 and 2

(C) 3 and 2 (D) 2 and 3

dy
80. The solution of differential equation - + v tan x = sec x is
dv

(A) y sec x = tan x C

(B) v sin x sec x + C

(C) log(sec x) = tan .v + C

(D) y sec .v = —cot x + C

A-1 16 EN

PART — C
ENVIRONMENTAL ENGINEERING

It consists of 81 to 180 questions :

81. The compressive strength of granite is
(A) 50 to 70 MN/m2 (B) 70 to 130 MN/m 2
(C) 130 to 170 MN/m2 (D) 170 to 200 MN/m2

82. The percentage of silica in a good brick clay should vary from
(A) 20 to 30 (i/o (B) 30 to 40 %
(C) 40 to 50 % (D) 50 to 60 %

83. Efflorescence is caused if
(A) the alkaline salt is present in the brick.
(B) the clay used for making bricks contain pyrite.
(C) the water used for pugging the clay contain gypsum.
(D) All of the above

84. The amount of gypsum usually added in the manufacture of cement is
(A) 0.1 to 0.5 °A (B) 0.5 to I%
(C) 1 to 3 °A (D) 3 to 5 %

85. The soundness of cement is tested by
(A) Air permeability method (B) Le-Chatelier method
(C) Vicat's apparatus (D) All of the above

86. In cement concrete the reinforcement is introduced to improve the
(A) Compressive strength of concrete
(B) Yield strength of concrete
(C) Tensile strength of concrete
(D) None of the above

EN 17 A-1

87. The bricks should be burnt at a temperature from
(A) 300 °C to 500 °C (B) 500 °C to 700 °C.
(C) 700 °C to 1000 °C (D) 1000 °C to 1200 °C

88. Which of the following is unstratified ?
(A) Sand stone (B) Lime stone
(C) Shale (D) Granite

89. The length of an engineer's chain should be
(A) 100 ft (B) 66 ft
(C) 30 m (D) 20 in

90. An obstacle which obstructs both chaining and ranging
(A) River (B) Lake
(C) Hillock (D) Building

91. The tie line is run through the Survey to
(A) Take offsets for detailed Surveying
(B) Take details of nearby objects
(C) Check accuracy of work
(D) None of the above

92. If the bearing of a line is 185° 30' in WCB, its value in QB system is
(A) 5° 30' (B) S 5° 30' W
(C) S 5° 30' E (D) 185°

93. True meridian passes through
(A) Actual line of control (B) A fixed point
(C) True north and true south (D) Equational line

A-1 18 EN

94. What is the whole circle bearing of a quadrant bearing N 15° 28' W ?

(A) I95° 28' (B) 164' 3T

(C) 344° 32' (D) 344° 28'

95. An imaginary line connecting the points of equal elevation on the ground surface is known
as
(A) Contour line (B) Contour interval

(C) Horizontal equivalent (D) Contour gradient

96. A relatively fixed point of known elevation above datum is called

(A) Datum (B) Bench mark
(C) Reduced level (D) Reference point

97. The weight per unit volume of a liquid at a standard temperature and pressure is called
(A) Specific weight (B) Mass density
(C) Specific gravity (D) None of these

98. Surface tension of water
(A) Increases with decrease in temperature
(B) Decreases with decrease in temperature
(C) Independent of temperature
(D) None of these

99. The unit of dynamic viscosity of fluid is

(A) m2 /sec (B) N. sec/m2

(C) Pa. sec/m2 (D) Kg. sect/m2

EN 19 A-1

100. When ship moving on sea water enters a river and moves inland, it is expected to
(A) Rise a little
(B) Sink a little
(C) Maintain the same level of draft
(D) Riseor fall depending on whether it is made of wood or steel

101. Water flows at a depth of 0.1 m with a velocity of 6 m/s in a rectangular channel, the
alternate depth is
(A) 0.30 m (B) 0.40 m
(C) 0.86 m (D) 0.81 in

102. The width of a weir with end contraction is
(A) equal to the width of the channel (B) less than width of the channel
(C) half the width of the channel (D) one fourth the width of the channel

103. The liquid used in manometers should have
(A) low density (B) high density
(C) low surface tension (D) high surface tension

104. The most efficient section of a channel is
(A) Triangular (B) Rectangular
(C) Square (D) Trapezoidal

105. The value of coefficient of velocity for a sharp edge orifice with the head of water.
(A) decreases (B) increases
(C) same (D) None of the above

106. A nozzle is generally made of
(A) Cylindrical shape (B) Convergent shape
(C) Divergent shape (D) Convergent — Divergent shape

A-1 20 EN

107. The total solids concentration of water is determined by analysis.
I A\
s..J1 Uv 'Mk-AA 11/4., (B) Volumetric
(C) Colorimetric (D) Potentiometric

108. The dispersion of solid in liquid medium is commonly known as
(A) Fog (B) Smoke
(C) Foam (D) Sol

109. Reverse Osmosis can remove ions from solution.
(A) suspended (B) dissolved
(C) both (A) and (B) (D) None of the above

110. The advanced form of Liquid Chromatography is known as
(A) IPC (B) HPLC
(C) PLC (D) HLC

111. Alkalinity of a water is a measure of its capacity to neutralize
(A) Acids (B) Bases
(C) both (A) and (B) (D) Hardness

112. Chlorine is the most common agent.
(A) Coagulant (B) Disinfectant
(C) Flocculent (D) Coagulant aid

113. The solubility of atmospheric oxygen in fresh water is 35 °C.
(A) 7 mg/I (B) 4 mg/I
(C) 10 mg/1 (D) 14 mgil

EN 21 A-1

114. The fluoride concentration in drinking water less than 1.0 muil causes
(A) Dental Caries (B) Dental Fluorosis
(C) Breakage in Bone (D) Fluorosis

115. The strong oxidizing agent used in COD test is _.
(A) Potassium Dichromate (B) Potassium Chromate
(C) Potassium Iodide (D) Potassium Chloride

116. Direct Nesslerization is used in the determination of
(A) Organic Nitrogen (B) Ammonia Nitrogen
(C) Nitrite Nitrogen (D) Nitrate Nitrogen

117. The subsurface water obtained under pressure is generally known as
(A) open well (B) tube well
(C) infiltration well (D) artesian well

118. The total domestic consumption in a city as compared to total demand of a city is
(A) 20% (B) 30%
(C) 60% (D) 75%

119. The colour of water is measured on
(A) Turbidity scale (B) Silica' scale
(C) Platinum cobalt scale (D) Threshold scale

120. The permissible pH value for public supply water is between
(A) 4.5 to 5.5 (B) 5.5 to 6.5
(C) 6.5 to 8.5 (D) 8.5 to 10.5

A-1 22 EN

121. precipitation occurs due to conflict between two air masses.
(A) Frontal (B) Convective
(C) Orographic (D) Cyclonic

122. The required depth of sand bed in slow sand filter should be
(A) 0.6 to 0.9 m (B) 0.6 to 0.75 m
(C) 0.3 to 0.45 m (D) Ito 2 m

123. Aeration is done for the removal of
(A) Colour (B) Turbidity
(C) Hardness (D) Bad odour

124. When the level of the source is higher than the level of the consumer place, water is genrally
supplied by
(A) Gravitational system
(B) Pumping system
(C) Combined gravity & pumping system
(D) Any of the above

125. Pre-chlorination
(A) Improves coagulation (B) Reduces odour & taste
(C) Reduce organisms (D) All the above

126. The type of valve which allows water to flow in one direction but prevents its flow in the
reverse direction is
(A) Reflux valve (B) Sluice valve
(C) Air relief valve (D) Pressure relief valve

EN 23 A-1

127. Disinfection of water results in
(A) Removal of turbidity (B) Removal of hardness
(C) Killing disease bacteria (D) Complete sterilization

128. The process in which the chlorination is done beyond the break-point is known as
(A) Pre-chlorination (B) Post chlorination
(C) Super chlorination (D) Break-point chlorination

129. First stage in water treatment is
(A) Sedimentation (B) Filtration
(C) Evaporation (D) Precipitation

130. Pan measurement method is commonly used to determine
(A) Run-off (B) Infiltration
(C) Evaporation (D) Precipitation

131. For removal of temporary hardness of water
(A) Water is filtered (B) Water is boiled
(C) Lime is added (D) Chlorination is done

132. The underground conduit constructed for removal of liquid waste of a community is known
as
(A) Canals (B) Tunnels
(C) Sewer (D) Sewage

133. The sewer obtaining its discharge directly from buildings is known as
(A) Lateral sewer (B) Main sewer
(C) Intercepting river (D) None of these

A-1 24 EN

134. The sewer pipes have to be designed and checked for
(A) Only maximum flow
(B) Only minimum flow
(C) Both maximum and minimum flow
(D) None of the above

135. The lower most level or of a sewer is known as
(A) Bottom point (B) Street sewer
(C) Head sewer (D) Invert Sewer

136. The inlet with a basin which makes grit, sand or debris to settle and thus prevents it from
entering into the sewer is called
(A) Man hole (B) Catch basin
(C) Street Inlet (D) Inspection hole

137. Traps are provided to
(A) stop flow of sewage
(B) separate the flow of liquid & solids
(C) avoid back flow of sewage
(D) prevent the escape of foul gases inside & outside the house

138. Trickling filters are used to remove
(A) suspended solids (B) colloidal solids
(C) organic matter (D) pathogenic bacteria

139. Structures constructed to divert part of sewage in case of combined sewers are
(A) Leaping weir (B) Overflow weir
(C) Siphon spillway (D) All the above

EN 25 A-1

140. Fresh sewage is usually
(A) Alkaline (B) Neutral
(C) Acidic (D) has pH value of 7

141. From Septic tank the effluents are discharged into
(A) Soak pit (B) Drainage
(C) Oxidation pond (D) Sewer

142. Pipe which carries discharges from fittings such as urinals, water-closets etc. known as
(A) Waste pipe (B) Soil pipe
(C) Anti siphonage pipe (D) None of the above

143. In Oxidation ponds, sewage is mainly treated by
(A) Dilution (B) Reduction
(C) Purification (D) Aerobic bacteria action

144. A manhole of such depth that an access shaft is required in addition to the working chamber
is called
(A) Tube manhole (B) Deep manhole
(C) Well manhole (D) Earth manhole

145. The bacteria which live on free oxygen of air in water are called
(A) Aerobic bacteria (B) Anaerobic bacteria
(C) Facultative bacteria (D) All of the above

146. If organic matter increases in sewage the demand of oxygen will
(A) Increases (B) Decreases
(C) Remain constant (D) Vary from organic to organic

A-1 26 EN

147. Vacuum filters are used for
(A) Slowing down bacterial activity (B) Dewatering of sludge
(C) Filteration of sludge (D) Filteration of released waste

148. Which method is very effective in strength reduction ?
(A) Equipment modifiCation (B) Reuse of waste
(C) Changing the production process (D) Conservation of waste water

149. The average period of aeration for industrial waste water ranges from
(A) 4 — 6 hours (B) 6 — 8 hours
(C) 6 — 12 hours (D) 6 — 24 hours

150. The 'Kraft Process" of pulp making in pulp and paper mill uses
(A) Sodium sulphate (B) Sodium hydroxide
(C) Sodium sulphide (D) All the above

151. The by-products recovered from distillery waste are
(A) Nutrient rich animal feeds (B) Potassium rich fertilizers
(C) Both (A) and (B) (D) Bagasses

152. The industrial waste water are biologically treatable when its BOD : COD ratio is
(A) > 0.6 (B) < 0.6
(C) > 0.3 (D) < 0.3

153. In sugar mill, the partially crystallized syrup from the vacuum pan is known as
(A) Mollasses (B) Massecuite
(C) Bagasses (D) Black liquor

EN 27 A-1

154. The value of deoxygenation constant (K1 ) of treated waste is

(A) 0.11 (B) 0.12
(C) 0.13 (D) 0.14

155. stage uses least volume of fresh water in industries.
(A) Cooling (B) Processing
(C) Cleaning (D) Packing

156. Bating the hides in Tannery helps in removing the products from it.
(A) Protein degradation (B) Fat degradation
(C) Dirt and soil (D) pH

157. The efficiency of the Rotating Disc Biological Contactor depends on
(A) Number of discs (B) Submergence
(C) RPM of the discs (D) All the above

158. Organisms that survive at an temperature of 10 °C to 40 °C are called
(A) Psychrophilic (B) Mesophilic
(C) Therinophilic (D) Hyper thermophilic

159. The source of energy for all work done by cells in the human body is
(A) Glucose (B) Fructose
(C) Sucrose (D) Galactose

160. Proteins are primarily made up of
(A) Amino Acids (B) Nucleic Acids
(C) Sulphuric Acids (D) Citric Acids

A-1 28 EN

161. The deficiency of causes night-blindness.
\; Vitamin B
(A) Vitamin — A k

(C) Vitamin — C (D) Vitamin — D

162. are incapable of synthesizing their own food.
(A) Autotrophs (B) Heterotrophs
(C) Chemotrophs (D) Phototrophs

163. Extracts from Blue Green Algae have properties.
(A) Insecticidal (B) Pesticidal
(C) Larvicidal (D) Colloidal

164. are called "Traffic Director" of cells.
(A) Ribosomes (B) Lysosomes
(C) Mitochondria (D) Golgi Apparatus

165. The reserve food material in fungi is
(A) Starch (B) Cellulose
(C) Glucose (D) Glycogen

166. The main aim of sterilization is to kill
(A) Pathogenic micro-organisms (B) Non-pathogenic micro-organisms
(C) Spores of micro-organisms (D) All the above

167. Critical control points in identifying food safety can be determined after knowing the
(A) Concentration (B) Content
(C) Sensitivity (D) All the above

EN 29 A-1

168. The clean natural atmospheric air, the amount of oxygen present is by volume.

(A) 21% (B) 78%
(C) Less than 1% (D) 2%

169. A state in which the warmer air lies over the colder air is
(A) Transverse (B) Inversion
(C) Lapse rate (D) None of these

170. The device in which gas is allowed to mix with water and then impinges on a plate is called
(A) Cyclone scrubber (B) Fabric filter
(C) Water filter (D) Separator

171. Killing of tissue from air pollutants is called
(A) Necrosis (B) Chlorosis
(C) Abscission (D) Epinasty

172. Which is the major pollutant present in photochemical smog ?
(A) PAN (B) SO,

(C) HC (D) NO,

173. CPM network is
(A) Event Oriented (B) Activity Oriented
(C) Slack Oriented (D) Work Oriented

174. EMD means
(A) Earnest Money Demand (B) Early Money Demand
(C) Earnest Money Deposit (D) Early Money Deposit

A-1 30 EN

175. Pre-tender stage of construction requires
(A) Site Selection (B) Land Acquisition
(C) Project Finalization (D) All the above

176. The full responsibility of construction planning lies on
(A) Owner (B) Contractor
(C) Architect (D) Engineer

177. A formal approval of the proposal of project by competent authority of department is called

(A) Technical sanction (B) Administrative approval
(C) Both (A) and (B) (D) Executive approval

178. The job layout should be such that the time consumed in carrying materials to project site is

(A) constant (B) maximum
(C) minimum (D) null

179. Checklist contains during evaluation.
(A) Local Economy & Natural Environment
(B) Aesthetics & Cultural Value
(C) Public & Private Services
(D) All the above

180. Methodology of EIA adopted when no baseline data is available
(A) Checklist (B) Overlays
(C) Adhoc procedure (D) BEES

EN 31 A-1

A-1 32 EN