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Latest CWC Junior Executive Technical Exam Question (Objective Questions), MCQ in English

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Subject Knowledge

Question 1Single Answer
What is the difference between stock and supply
  1. A
    Stock is a flow concept whereas supply is no
  2. B
    Supply is a flow concept and stock is not a flow.com
  3. C
    Both supply and stock are flow concepts
  4. D
    None of the above
Question 2Single Answer
What is the shape of supply curve
  1. A
    Convex to x axis or upward sloping
  2. B
    Downward sloping
  3. C
    Concave
  4. D
    Can be any of the
Question 3Single Answer
What is the relation between individual and market supply curve
  1. A
    Market supply curve is the horizontal summation of individual supply curve
  2. B
    Market demand curve is the vertical summation of individual supply curve
  3. C
    Individual supply curve is the horizontal summation of market demand curve
  4. D
    Individual supply curve is the vertical summation of market demand curve
Question 4Single Answer
An out-of-school system of education for rural people:
  1. A
    Extension
  2. B
    Management
  3. C
    Participation
  4. D
    Communication
Question 5Single Answer
Extension literally means:
  1. A
    Stretching out
  2. B
    Talking with
  3. C
    Deciding for
  4. D
    Thinking about
Question 6Single Answer
The term ‘Extension’ have originated in:
  1. A
    Latin
  2. B
    Persian
  3. C
    Greek
  4. D
    Sanskrit
Question 7Single Answer
Temperature can be expressed as derived quantity in terms of
  1. A
    length and mass
  2. B
    mass and time
  3. C
    length, mass and time
  4. D
    None of these
Question 8Single Answer
Electron volt is a unit of
  1. A
    potential difference
  2. B
    charge
  3. C
    energy
  4. D
    capacity
Question 9Single Answer
Dimensions of impulse are
  1. A
    [MLT –1]
  2. B
    [MLT²]
  3. C
    [MT–2]
  4. D
    [ML–1T–3]
Question 10Single Answer
Potential is measured in
  1. A
    joule/coulomb
  2. B
    watt/coulomb
  3. C
    newton–second
  4. D
    None of these
Question 11Single Answer
One Nanometer is equal to
  1. A
    10–9m
  2. B
    10–6m
  3. C
    10–10m
  4. D
    10–3m
Question 12Single Answer
Maxwell is the unit of
  1. A
    magnetic susceptibility
  2. B
    intensity of Magnetisation
  3. C
    magnetic Flux
  4. D
    magnetic Permeability
Question 13Single Answer
Which of the following is derived physical quantity ?
  1. A
    Mass
  2. B
    Velocity
  3. C
    Length
  4. D
    Time
Question 14Single Answer
What are the units of magnetic permeability ?
  1. A
    Wb A–1 m–1
  2. B
    Wb–1 Am
  3. C
    Wb A m–1
  4. D
    Wb A–1 m
Question 15Single Answer
The dimensions of pressure gradient are
  1. A
    [ML–2 T–2]
  2. B
    [ML–2 T–1]
  3. C
    [ML–1 T–1]
  4. D
    [ML–1 T–2]
Question 16Single Answer
The dimensions of Rydberg's constant are
  1. A
    [M0L–1T]
  2. B
    [MLT–1]
  3. C
    [M0 L–1T0]
  4. D
    [ML0 T2]
Question 17Single Answer
'Farad' is the unit of
  1. A
    resistance
  2. B
    conductance
  3. C
    capacitance
  4. D
    inductance
Question 18Single Answer
S.I. unit of surface tension is
  1. A
    degree/cm
  2. B
    N/m
  3. C
    N/m²
  4. D
    Nm
Question 19Single Answer
Which one of the following pairs does not have the same dimension ?
  1. A
    Potential energy and Kinetic energy
  2. B
    Density and specific gravity
  3. C
    Focal length and height
  4. D
    Gravitational force and frictional force
Question 20Single Answer
Which of the following is not a synthetic fibre:
  1. A
    Anygora
  2. B
    Rayon
  3. C
    Nylon
  4. D
    Polyster
Question 21Single Answer
Which one of the following is not contained in Portland cement ?
  1. A
    Ca3Al2O6
  2. B
    Ca3SiO5
  3. C
    Ca2Si­O4
  4. D
    Ca3(PO4)2
Question 22Single Answer
What is the reson for white cement to be white ?
  1. A
    It does not contain carbon
  2. B
    It does not contain silicon
  3. C
    It does not contain iron
  4. D
    It does not contain calcium
Question 23Single Answer
Which fertilizer is assimilated directly by the plant ?
  1. A
    Super phosphate
  2. B
    Nitrolim
  3. C
    Muriate of Potash
  4. D
    Humus
Question 24Single Answer
Which of the following chemicals is used in foam fire extinguishers ?
  1. A
    Aluminium sulphate
  2. B
    Copper sulphate
  3. C
    Cobalt sulphate
  4. D
    Nickel sulphate 
Question 25Single Answer
What is a mixture of potassium nitrate, powdered charcoal and sulphur called ?
  1. A
    Glass
  2. B
    Cement
  3. C
    paint
  4. D
    Gun powder
Question 26Single Answer
Which one of the following chemicals is used in beauty parlours for hair – setting ?
  1. A
    Sulphur based
  2. B
    Phosphorus based
  3. C
    Silicon based
  4. D
    Iron based 
Question 27Single Answer
Which one of the following is used as a mordant in dyeing and tanning industry ?
  1. A
    Magnesium oxide
  2. B
    Magnesium carbonate
  3. C
    Magnesium chloride
  4. D
    Magnesium sulphate
Question 28Single Answer
Which one of the following substances is used in the manufacture of safety matches ?
  1. A
    Red phosphorus
  2. B
    White phosphorus
  3. C
    Phosphorus trioxide (P2O3)
  4. D
    Black phosphorus
Question 29Single Answer
Which one of the following polymeric materials is used for making bullet proof jacket ?
  1. A
    Nylon –6, 6
  2. B
    Rayon
  3. C
    Kevlar
  4. D
    Dacron
Question 30Single Answer
Which one of the following is another name of RDX
  1. A
    Cyanohydrin
  2. B
    Dextran
  3. C
    Cyclohexane
  4. D
    Cyclonite
Question 31Single Answer
Which one of the following is used as an explosive ?
  1. A
    Phosphorus trichloride
  2. B
    Mercuric oxide
  3. C
    Graphite
  4. D
    Nitroglycerine
Question 32Single Answer
Flint glass is obtained from which of the following ?
  1. A
    Zinc and barium borosilicate
  2. B
    Sand, red lead and potassium carbonate
  3. C
    Sodium aluminium borosilicate
  4. D
    Pure silica and zinc oxide
Question 33Single Answer
Plant viruses usually contain :
  1. A
    RNA
  2. B
    DNA
  3. C
    DNA and RNA
  4. D
    DNA or RNA
Question 34Single Answer
Viruses were discovered by :
  1. A
    Stanley
  2. B
    Ivanowski
  3. C
    Twort
  4. D
    Herelle
Question 35Single Answer
Which statement best defines viruses?
  1. A
    Acellular infectious agents that replicate only inside living host cells
  2. B
    Cellular microorganisms containing only DNA
  3. C
    Free-living microorganisms capable of independent metabolism
  4. D
    Cellular microorganisms containing only RNA
Question 36Single Answer
Which infectious agents consist essentially of small, naked RNA molecules without a protein coat?
  1. A
    Virions
  2. B
    Prions
  3. C
    Viroids
  4. D
    Bacteriophages
Question 37Single Answer
Coliphage f X 174 contains :
  1. A
    double stranded RNA
  2. B
    single stranded DNA
  3. C
    double stranded DNA
  4. D
    single stranded RNA
Question 38Single Answer
Viruses differ from living organisms in that, they :
  1. A
    can grow inside a living host
  2. B
    can multiply inside a living host
  3. C
    can undergo mutation inside a living host
  4. D
    are non-cellular
Question 39Single Answer
Virus which attacks E.coli is called :
  1. A
    bacteriophage
  2. B
    coliphage
  3. C
    phytophage
  4. D
    zoophage
Question 40Single Answer
Which characteristic distinguishes viruses from cellular organisms?
  1. A
    They possess ribosomes for protein synthesis
  2. B
    They have independent energy metabolism
  3. C
    They are acellular and depend on host cells for replication
  4. D
    They reproduce by binary fission
Question 41Single Answer
The genome of a temperate bacteriophage integrated into the bacterial chromosome is termed as?
  1. A
    Prophage
  2. B
    Episome
  3. C
    Plasmid
  4. D
    Capsomere
Question 42Single Answer
Virus was crystallized and isolated first by :
  1. A
    J.D. Ivanowski
  2. B
    F.C. Bawden
  3. C
    W.M. Stanley
  4. D
    K.M. Smith
Question 43Single Answer
Little leaf disease of brinjal is primarily associated with which pathogen?
  1. A
    Phytoplasma
  2. B
    Begomovirus
  3. C
    Fungus
  4. D
    Viroid
Question 44Single Answer
Which approximate size range includes many of the smallest known conventional virus particles?
  1. A
    20–30 nm
  2. B
    100–150 nm
  3. C
    500–700 nm
  4. D
    1–2 µm
Question 45Single Answer
Which of the following is devoid of protein coat, with a constitution of RNA only ?
  1. A
    Tobacco mosaic virus
  2. B
    Poxvirus
  3. C
    Potato spindle tuber virus
  4. D
    None of the above
Question 46Single Answer
What generally happens to contractile-vacuole activity when a freshwater Amoeba is transferred to a sufficiently hypertonic saline solution?
  1. A
    It increases rapidly
  2. B
    It remains unchanged
  3. C
    It decreases markedly or may cease
  4. D
    The vacuole divides repeatedly
Question 47Single Answer
What is the median adhesive pad located between the two terminal claws of a cockroach leg called?
  1. A
    Unguis
  2. B
    Arolium
  3. C
    Tibial spur
  4. D
    Cercus
Question 48Single Answer
The binomial system of Carolus Linnaeus was devoid of which of the following categories ?
  1. A
    Genus and species
  2. B
    Class and order
  3. C
    Phylum and family
  4. D
    Kingdom and class
Question 49Single Answer
The mouthparts of a cockroach are adapted primarily for which mode of feeding?
  1. A
    Biting and chewing
  2. B
    Piercing and sucking
  3. C
    Siphoning
  4. D
    Sponging
Question 50Single Answer
Which mosquito is the biological vector responsible for natural transmission of human malaria?
  1. A
    Male Culex
  2. B
    Female Culex
  3. C
    Female Aedes
  4. D
    Female Anopheles
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