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Latest CWC Assistant Manager Technical Exam Question (Objective Questions), MCQ in English

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Professional, Subject Knowledge (Assistant Manager Technical )

Question 1Single Answer
A refrigeration plant provides 90 kW of cooling for 15 kW compressor input. What is its COP?
  1. A
    6
  2. B
    7
  3. C
    105
  4. D
    0.167
Question 2Single Answer
A bulk grain consignment has a mass of 400 kg and occupies 8 m³. What is its bulk density?
  1. A
    3200 kg/m³
  2. B
    150 kg/m³
  3. C
    0.020 kg/m³
  4. D
    50 kg/m³
Question 3Single Answer
A food analysis reports total mass 80 g and moisture mass 7 g. What is dry-matter fraction by mass (nearest 0.1%)?
  1. A
    1142.9%
  2. B
    96.2%
  3. C
    8.8%
  4. D
    91.2%
Question 4Single Answer
A grain sample contains 40 kg of dry solids and 8 kg of water. What is its moisture content on a wet basis (nearest 0.1%)?
  1. A
    16.7%
  2. B
    83.3%
  3. C
    20.0%
  4. D
    26.7%
Question 5Single Answer
A bulk grain consignment has a mass of 1000 kg and occupies 25 m³. What is its bulk density?
  1. A
    140 kg/m³
  2. B
    0.025 kg/m³
  3. C
    40 kg/m³
  4. D
    25000 kg/m³
Question 6Single Answer
A food analysis reports total mass 38 g and moisture mass 3 g. What is dry-matter fraction by mass (nearest 0.1%)?
  1. A
    92.1%
  2. B
    7.9%
  3. C
    1266.7%
  4. D
    97.1%
Question 7Single Answer
Which sorter identifies defects based on colour or optical signatures?
  1. A
    Bucket elevator
  2. B
    Hammer mill
  3. C
    Air lock
  4. D
    Optical colour sorter
Question 8Single Answer
Which grain property is important for designing hopper discharge angles?
  1. A
    Angle of repose
  2. B
    Specific heat
  3. C
    Colour value
  4. D
    Protein content
Question 9Single Answer
Which rice-milling stage removes bran layers from brown rice?
  1. A
    Whitening
  2. B
    Winnowing
  3. C
    Drying
  4. D
    Threshing
Question 10Single Answer
Which equipment removes ferrous contaminants from grain?
  1. A
    Aspirator
  2. B
    Cyclone separator
  3. C
    Indented cylinder
  4. D
    Magnetic separator
Question 11Single Answer
Which edible-oil refining step removes phospholipids and gums?
  1. A
    Blanching
  2. B
    Degumming
  3. C
    Extrusion
  4. D
    Pearling
Question 12Single Answer
The equipment separates particles that primarily by size is:
  1. A
    Gravity separator
  2. B
    Screen cleaner
  3. C
    Optical sorter
  4. D
    Magnetic separator
Question 13Single Answer
Which packaging material is generally an excellent oxygen and moisture barrier when undamaged?
  1. A
    Uncoated kraft paper
  2. B
    Open-weave jute
  3. C
    Aluminium foil laminate
  4. D
    Perforated mesh
Question 14Single Answer
A grain sample contains 46 kg of dry solids and 12 kg of water. What is its moisture content on a wet basis (nearest 0.1%)?
  1. A
    79.3%
  2. B
    20.7%
  3. C
    26.1%
  4. D
    30.7%
Question 15Single Answer
Unit is that commonly used for grain bulk density:
  1. A
    Joules per kilogram-kelvin
  2. B
    Watts per metre-kelvin
  3. C
    Pascals per second
  4. D
    Kilograms per cubic metre
Question 16Single Answer
A food portion has 10 g protein, 15 g fat and 68 g digestible carbohydrate. Estimate energy using 4-9-4 kcal/g factors.
  1. A
    487 kcal
  2. B
    837 kcal
  3. C
    372 kcal
  4. D
    447 kcal
Question 17Single Answer
A grain sample contains 33 kg of dry solids and 12 kg of water. What is its moisture content on a wet basis (nearest 0.1%)?
  1. A
    73.3%
  2. B
    36.7%
  3. C
    36.4%
  4. D
    26.7%
Question 18Single Answer
Which bagging machine operation verifies filled bag weight?
  1. A
    Roasting
  2. B
    Checkweighing
  3. C
    Degumming
  4. D
    Tempering
Question 19Single Answer
Which equipment grades grains principally by length?
  1. A
    Thermocouple
  2. B
    Aspirator
  3. C
    Refrigeration compressor
  4. D
    Indented-cylinder separator
Question 20Single Answer
A bulk grain consignment has a mass of 1200 kg and occupies 10 m³. What is its bulk density?
  1. A
    12000 kg/m³
  2. B
    0.008 kg/m³
  3. C
    120 kg/m³
  4. D
    220 kg/m³
Question 21Single Answer
Which type of water is generally removed first during grain drying?
  1. A
    Water of crystallization
  2. B
    Chemically bound water
  3. C
    Water in starch molecules only
  4. D
    Free or loosely held water
Question 22Single Answer
A bulk grain consignment has a mass of 700 kg and occupies 8 m³. What is its bulk density?
  1. A
    187.5 kg/m³
  2. B
    87.5 kg/m³
  3. C
    0.011 kg/m³
  4. D
    5600 kg/m³
Question 23Single Answer
A food analysis reports total mass 76 g and moisture mass 3 g. What is dry-matter fraction by mass (nearest 0.1%)?
  1. A
    2533.3%
  2. B
    3.9%
  3. C
    96.1%
  4. D
    101.1%
Question 24Single Answer
Which device removes stones by exploiting density and motion differences?
  1. A
    Retort
  2. B
    Destoner
  3. C
    Blancher
  4. D
    Polisher
Question 25Single Answer
What is measured as grain mass divided by the volume occupied only by grain solids?
  1. A
    Porosity
  2. B
    True density
  3. C
    Bulk density
  4. D
    Moisture ratio
Question 26Single Answer
A grain sample contains 44 kg of dry solids and 3 kg of water. What is its moisture content on a wet basis (nearest 0.1%)?
  1. A
    6.8%
  2. B
    93.6%
  3. C
    16.4%
  4. D
    6.4%
Question 27Single Answer
A grain sample contains 21 kg of dry solids and 12 kg of water. What is its moisture content on a wet basis (nearest 0.1%)?
  1. A
    36.4%
  2. B
    63.6%
  3. C
    46.4%
  4. D
    57.1%
Question 28Single Answer
Which device measures grain moisture by electrical response after calibration?
  1. A
    Lux meter
  2. B
    Tachometer
  3. C
    Aneroid barometer
  4. D
    Electronic grain moisture meter
Question 29Single Answer
Which hopper pattern leaves stagnant material near its walls?
  1. A
    Mass flow
  2. B
    Funnel flow
  3. C
    Plug flow of air
  4. D
    Countercurrent drying
Question 30Single Answer
Which flow behavior describes all material in a hopper moving as the outlet discharges?
  1. A
    Mass flow
  2. B
    Funnel flow
  3. C
    Turbulent boiling
  4. D
    Laminar air flow
Question 31Single Answer
System that can link sampling outcomes to a particular stored lot:
  1. A
    Unlabelled bulk stock
  2. B
    Anonymous sample jar
  3. C
    Only warehouse paint
  4. D
    Unique lot identification
Question 32Single Answer
The correct description of equilibrium moisture content is:
  1. A
    Maximum possible water content
  2. B
    Moisture after boiling
  3. C
    Initial moisture at harvest
  4. D
    Moisture level at which grain and air exchange no net water
Question 33Single Answer
Which operation conditions wheat moisture before milling?
  1. A
    Sterilization
  2. B
    Tempering
  3. C
    Hydrogenation
  4. D
    Carbonation
Question 34Single Answer
A refrigeration plant provides 40 kW of cooling for 20 kW compressor input. What is its COP?
  1. A
    60
  2. B
    3
  3. C
    2
  4. D
    0.500
Question 35Single Answer
A refrigeration plant provides 30 kW of cooling for 20 kW compressor input. What is its COP?
  1. A
    0.667
  2. B
    1.5
  3. C
    2.5
  4. D
    50
Question 36Single Answer
Which system can link sampling outcomes to a particular stored lot?
  1. A
    Anonymous sample jar
  2. B
    Unlabelled bulk stock
  3. C
    Unique lot identification
  4. D
    Only warehouse paint
Question 37Single Answer
On a dry basis, moisture content uses which denominator?
  1. A
    Total wet mass
  2. B
    Mass of packaging
  3. C
    Mass of bone-dry solids
  4. D
    Volume of air
Question 38Single Answer
Which measure is often used to compare energy consumed per unit water evaporated?
  1. A
    Fineness modulus
  2. B
    Protein efficiency ratio
  3. C
    Specific energy consumption
  4. D
    Compression index
Question 39Single Answer
A food analysis reports total mass 41 g and moisture mass 15 g. What is dry-matter fraction by mass (nearest 0.1%)?
  1. A
    36.6%
  2. B
    273.3%
  3. C
    68.4%
  4. D
    63.4%
Question 40Single Answer
A food analysis reports total mass 53 g and moisture mass 1 g. What is dry-matter fraction by mass (nearest 0.1%)?
  1. A
    98.1%
  2. B
    103.1%
  3. C
    1.9%
  4. D
    5300.0%
Question 41Single Answer
Which food-quality characteristic is evaluated by sensory panel?
  1. A
    Bulk density only
  2. B
    Grain porosity only
  3. C
    Thermal conductivity only
  4. D
    Flavour acceptability
Question 42Single Answer
A food analysis reports total mass 72 g and moisture mass 11 g. What is dry-matter fraction by mass (nearest 0.1%)?
  1. A
    15.3%
  2. B
    84.7%
  3. C
    654.5%
  4. D
    89.7%
Question 43Single Answer
A validated treatment achieves a 2-log reduction from 1,000,000 viable microbial cells. How many cells are expected to survive mathematically?
  1. A
    10000 cells
  2. B
    999998 cells
  3. C
    100000 cells
  4. D
    250000 cells
Question 44Single Answer
A bulk grain consignment has a mass of 1000 kg and occupies 5 m³. What is its bulk density?
  1. A
    300 kg/m³
  2. B
    200 kg/m³
  3. C
    0.005 kg/m³
  4. D
    5000 kg/m³
Question 45Single Answer
A food portion has 16 g protein, 18 g fat and 51 g digestible carbohydrate. Estimate energy using 4-9-4 kcal/g factors.
  1. A
    430 kcal
  2. B
    340 kcal
  3. C
    765 kcal
  4. D
    470 kcal
Question 46Single Answer
Mill that commonly uses paired rolls for wheat grinding:
  1. A
    Roller mill
  2. B
    Sugar centrifuge
  3. C
    Balling press
  4. D
    Rotary evaporator
Question 47Single Answer
The treatment of rice is that primarily intended to reduce breakage in milling and improve nutritional retention is:
  1. A
    Carbonation
  2. B
    Parboiling
  3. C
    Bleaching
  4. D
    Pickling
Question 48Single Answer
A food portion has 9 g protein, 4 g fat and 65 g digestible carbohydrate. Estimate energy using 4-9-4 kcal/g factors.
  1. A
    372 kcal
  2. B
    312 kcal
  3. C
    702 kcal
  4. D
    332 kcal
Question 49Single Answer
Which property relates force to elongation within the linear elastic range?
  1. A
    Water activity
  2. B
    Bulk density
  3. C
    Young's modulus
  4. D
    Thermal conductivity
Question 50Single Answer
Grain characteristic is that commonly evaluated using a standard sieve set:
  1. A
    Enzyme activity
  2. B
    Particle-size distribution
  3. C
    Salt content
  4. D
    Vitamin retention
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