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Objective Questions

Latest MNNIT Junior Assistant & Technician Exam Question (Objective Questions), MCQ in English

Subjects : General Science, Trades of Engineering & Technology, Computer

Question Bank MNNIT Technician Stage-III Exam - English
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General Science

Question 1Single Answer
The elements of the set {x : x is an integer, x2 : 4} can be represent as .....Z..... . Here, Z refers to
  1. A
    {–2, 2} 
  2. B
    {–1, 0, 1}
  3. C
    {–2, –1, 0, 1, 2}
  4. D
    {0, 1, 2}
Question 2Single Answer
 
  1. A
  2. B
  3. C
  4. D
    None of these
Question 3Single Answer
If Y = {x : x is a positive factor of the number 2p – 1(2p – 1), where 2p – 1 is a prime number}, then Y can be represent in roster form as
  1. A
    {2}
  2. B
    {1, 2}  
  3. C
    {1, 2, 22, ....., 2p – 1}
  4. D
    {1, 2, 22, 23,.... 2p – 1, (2p – 1)}
Question 4Single Answer
The set {x : x is a positive integer less than 6 and 3x – 1 is an even number} in roster form is
  1. A
    {1, 2, 3, 4, 5}
  2. B
    {1, 2, 3, 4, 5, 6}  
  3. C
    {2, 4, 6}
  4. D
    {1, 3, 5}
Question 5Single Answer
If A B and A B, then
  1. A
    A is called a proper subset of B
  2. B
    A is called a super set of B
  3. C
    A is not a subset of B 
  4. D
    B is a subset of A
Question 6Single 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 7Single Answer
Electron volt is a unit of
  1. A
    potential difference
  2. B
    charge
  3. C
    energy
  4. D
    capacity
Question 8Single Answer
Dimensions of impulse are
  1. A
    [MLT –1]
  2. B
    [MLT²]
  3. C
    [MT–2]
  4. D
    [ML–1T–3]
Question 9Single Answer
Potential is measured in
  1. A
    joule/coulomb
  2. B
    watt/coulomb
  3. C
    newton–second
  4. D
    None of these
Question 10Single Answer
One Nanometer is equal to
  1. A
    10–9m
  2. B
    10–6m
  3. C
    10–10m
  4. D
    10–3m
Question 11Single Answer
Which of the following is not a synthetic fibre:
  1. A
    Anygora
  2. B
    Rayon
  3. C
    Nylon
  4. D
    Polyster
Question 12Single 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 13Single 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 14Single 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 15Single 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 16Single Answer
Which of the following contain enzymes for cellular respiration ?
  1. A
    Dictyosomes
  2. B
    Endoplasmic reticulum
  3. C
    lysosomes
  4. D
    Mitochondria
Question 17Single Answer
Which one among the following nutrients is a strctural
  1. A
    Cell membrane
  2. B
    Plasma membrane
  3. C
    Cell wall
  4. D
    Nucleus
Question 18Single Answer
Which one among the following nutrients is a structural component of the cell wall of plants ?
  1. A
    Manganese
  2. B
    Potassium
  3. C
    Phosphorus
  4. D
    Calcium
Question 19Single Answer
Which of the following groups is present in animal cells ?
  1. A
    Mitochondria, Cell membrane, Cell wall, Cytoplasm
  2. B
    Chloroplasts, Cytoplasm, Vacuole, Nucleus
  3. C
    Nucleus, Cell membrane, Mitochondria, Cytoplasm
  4. D
    Vacuole, cell membrane, Nucleus, Mitochondria
Question 20Single Answer
For which among the following is not a true fruit ?
  1. A
    Apple
  2. B
    Date
  3. C
    Grape
  4. D
    Plum
Question 21Single Answer
The grain size (USDA) of silt in soil ranges between :
  1. A
    0.2 mm to 0.5 mm
  2. B
    0.5 mm to 0.1 mm
  3. C
    0.1 mm to 0.05 mm
  4. D
    0.05 mm to 0.002 mm
Question 22Single Answer
What will be BOD, for a wastewater sample when 21 ml of sample is diluted to 300 ml in BOD bottle to determine dissolved oxygen .
[Given: Initial DO, = 10 mg/l; Five days later DO5 = 5 mg/l]
  1. A
    ~ 5 mg/l
  2. B
    ~ 25 mg/l
  3. C
    ~ 71.4 mg/l
  4. D
    ~75 mg/l
Question 23Single Answer
What will be the concentration of 40 ppb SO₂ in µg/m³ unit at 25°C ?
  1. A
    ~ 0.04 µg/m³
  2. B
    ~ 1047 µg/m³
  3. C
    ~ 104.7 µg/m³
  4. D
    ~ 10.47 µg/m³
Question 24Single Answer
National Ambient air quality standards typically include following components :
  1. A
    Maximum and Minimum pollutant levels, adjustment for co - pollutants
  2. B
    Abetment strategies, non - attainment penalties
  3. C
    Ambient temperature, size distribution and relative humidity
  4. D
    Indicator (Chemical/Chemical class), Averaging time, Pollutant form and level
Question 25Single Answer
Primary air pollutants differ from secondary air pollutants as they :
  1. A
    are present in levels that can be weighed on filter paper
  2. B
    are directly emitted from identified sources
  3. C
    have undergone chemical transformation in air after release from identified sources
  4. D
    are designated as hazardous air pollutants

Trades of Engineering & Technology

Question 26Single Answer
At temperature of 298 Kelvin, Silicon is not suitable for most-electronic applications, due to small amount of conductivity. This can be altered by
  1. A
    Gettering
  2. B
    Doping
  3. C
    Squeezing
  4. D
    Sintering
Question 27Single Answer
By doping Germanium with Gallium, the types of semi-conductors formed are
1. N type
2. P type
3. Intrinsic
4. Extrinsic
  1. A
    1 and 4
  2. B
    2 and 4
  3. C
    1 and 3
  4. D
    2 and 3
Question 28Single Answer
An n-type of silicon can be formed by adding impurity of:
1. Phosphorous
2. Arsenic
3. Boron
4. Aluminum 
Which of the above are correct ?
  1. A
    1 and 2
  2. B
    2 and 3
  3. C
    3 and 4
  4. D
    1 and 4
Question 29Single Answer
According to Einstein’s relationship for a semiconductor, the ratio of diffusion constant to the mobility of the charge carriers is
  1. A
    Variable and is twice the volt equivalent of the temperature
  2. B
    Constant and is equal to the volt equivalent of the temperature
  3. C
    Equal to two and is twice the volt equivalent of the temperature
  4. D
    Equal to one and is equal to the volt equivalent of the temperature
Question 30Single Answer
Swept-out voltage in PIN diode happens when PIN diode is
  1. A
    Forward biased and the thickness of the depletion layer decreases till I-region becomes free of mobile carriers
  2. B
    Reverse biased and the thickness of the depletion layer increases till I-region becomes free of mobile carriers
  3. C
    Forward biased and the thickness of the depletion layer increases till I-region becomes free of mobile carriers
  4. D
    Reverse biased and the thickness of the depletion layer decreases till I-region becomes free of mobile carriers
Question 31Single Answer
What will be the depth of penetration of the plunger in Vicat Apparatus (IS : 5513 - 1976) from the bottom of the Vicat Mould, when the cement paste is tested for standard consistency, according to IS 4031 – 1988 ?
  1. A
    11 to 15 mm
  2. B
    8 to 10 mm
  3. C
    15 to 17 mm
  4. D
    5 to 7 mm
Question 32Single Answer
Two sewer pipelines A and B (having the same diameter and made of the same material) are laid at a bed slope of 1 in 225 and 1 in 625, respectively. Determine the ratio of their carrying capacities (QA to QB) .
  1. A
  2. B
  3. C
    1
  4. D
Question 33Single Answer
Select the correct statement with respect to an over - reinforced cement concrete section under the working stress method .
  1. A
    The compressive stress in steel reaches the allowable limit before the maximum tensile stress in concrete reaches the allowable limit
  2. B
    Tensile steel stress and maximum compressive stress in concrete simultaneously reach their allowable limits
  3. C
    The allowable limiting stress is reached in concrete before the steel stress reaches the limiting value
  4. D
    The tensile stress in steel reaches the allowable limit before the maximum compressive stress in concrete reaches the allowable limit
Question 34Single Answer
A cantilever beam of span L is built - in at the support. It is restrained against lateral deflection and torsion at the free end. The effective length of compression flange for the beam as per IS 800 : 2007 is
  1. A
    0.5 L
  2. B
    0.85 L
  3. C
    2 L
  4. D
    0.75 L
Question 35Single Answer
What is the principle of plane surveying ?
  1. A
    Working from part to whole
  2. B
    Working from point to area
  3. C
    Working from angle to volume
  4. D
    Working from whole to part
Question 36Single Answer
What is single deck and double deck ?
  1. A
    Bus
  2. B
    Scooter
  3. C
    Van
  4. D
    Moped
Question 37Single Answer
Vijay Super 150 CC is a ........ .
  1. A
    moped
  2. B
    van
  3. C
    truck
  4. D
    scooter
Question 38Single Answer
Main part of a chassis is ........ .
  1. A
    steering system
  2. B
    transmission system
  3. C
    brake system
  4. D
    All of these
Question 39Single Answer
Producer of three wheeler vehicle is ........ .
  1. A
    TVS
  2. B
    Atlas
  3. C
    Hero Majestic
  4. D
    Vikram
Question 40Single Answer
Which company produce Vespa XE scooter ?
  1. A
    Maharashtra Scooter
  2. B
    Scooter India
  3. C
    Lohiya Machine
  4. D
    Bajaj Auto
Question 41Single Answer
Resistance switching is normally resorted in case of
  1. A
    Air blast CB
  2. B
    Bulk oil CB
  3. C
    Minimum oil CB
  4. D
    All types of CB
Question 42Single Answer
By transmitting power at high voltage
  1. A
    it will give poor voltage regulation
  2. B
    it will give better voltage regulation
  3. C
    it will not effect voltage regulation
  4. D
    None of these
Question 43Single Answer
Which statement about the daily load curve is valid ?
  1. A
    The area under the curve gives the average demand
  2. B
    The ratio of the area under the curves to the total area of rectangle in which it is contained gives the load factor for the day
  3. C
    The peak of the curve gives the installed capacity of the plant
  4. D
    The area of the curves divided by the number of hours gives load factor
Question 44Single Answer
High voltage Schring bridge is used to measure
  1. A
    large capacitance without additional element
  2. B
    small capacitance without additional element
  3. C
    medium value capacitance
  4. D
    None of these
Question 45Single Answer
Draw - in - system of laying underground cables has the drawback (s) of
  1. A
    higher cost
  2. B
    reduced current carrying capacity of the cables
  3. C
    requirements of much deeper and wider trenches
  4. D
    repairs, alterations or additions difficult
  5. E
    all of the above except
Question 46Single Answer
If a submerged body displaced from its equilibrium position, returns to its original position, it is called __________.
  1. A
    thermal equilibrium
  2. B
    neutral equilibrium
  3. C
    unstable equilibrium
  4. D
    stable equilibrium
Question 47Single Answer
In a flow measurement, a venturi meter is preferred over an orifice plate because _____.
  1. A
    energy of head loss is less
  2. B
    It is cheaper
  3. C
    pressure drop is more
  4. D
    space is limited  
Question 48Single Answer
Pitot tube measures ______.
  1. A
    dynamic pressure of a moving stream
  2. B
    guage pressure
  3. C
    temperature of moving water
  4. D
    pressure difference between two fluids
Question 49Single Answer
Which of the following is not a property of an ideal fluid ?
  1. A
    flow is irrotational
  2. B
    it has no viscosity
  3. C
    it has viscosity
  4. D
    it is incompressible
Question 50Single Answer
Nozzle used in steam turbines convert ________.
  1. A
    enthalpy of steam into work
  2. B
    enthalpy of steam into kinetic energy
  3. C
    enthalpy of steam into pressure energy
  4. D
    pressure energy into work
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