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Latest DRDO Technician A Exam Question (Objective Questions), MCQ in English

Subjects : General Science, General English, Quantitative Aptitude/General Maths, Quantitative Aptitude/General Maths Quantitative Aptitude/General Maths, General Intelligence & Reasoning Ability

Question Bank DRDO Technician A (COPA) Exam Tier 1 - English
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General Science

Question 1Single Answer
In ruby laser, the stimulated emission is due to transition from
  1. A
    metastable state to any lower state
  2. B
    any higher state of lower state
  3. C
    metastable state to ground state
  4. D
    any higher state to ground state
Question 2Single Answer
A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is
  1. A
    uniform throughout the pipe not zero
  2. B
    zero only along the axis of the pipe
  3. C
    zero at any point inside the pipe
  4. D
    maximum at the centre and minimum at the edge
Question 3Single Answer
convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is
  1. A
    0.45 m    
  2. B
    0.15 m
  3. C
    0.30 m       
  4. D
    0.6 m
Question 4Single Answer
10-6 M NaOH is diluted 100 times. The pH of the diluted base is
  1. A
    between 7 and 8
  2. B
    between 5 and 6
  3. C
    between 6 and 7
  4. D
    between 10 and 11
Question 5Single Answer
In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is
  1. A
    1.93 A         
  2. B
    9.65 A
  3. C
    19.3 A        
  4. D
    0.965 A
Question 6Single Answer
The one which decreases with dilution is
  1. A
    molar conductance
  2. B
    conductance
  3. C
    specific conductance
  4. D
    equivalent conductance
Question 7Single Answer
The respiratory quotient during cellular respiration would depend on
  1. A
    the nature of enzymes involved
  2. B
    the nature of the substrate
  3. C
    the amount of carbon dioxide released
  4. D
    the amount of oxygen utilised
Question 8Single Answer
Which of the following is not a green - house gas ?
  1. A
    Water vapour
  2. B
    Carbon monoxide
  3. C
    Methane
  4. D
    Oxygen
Question 9Single Answer
Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is
  1. A
    50%          
  2. B
    75%
  3. C
    0% 
  4. D
    25%
Question 10Single Answer
An animal, which has both exoskeleton and endoskeleton structures is a
  1. A
    fresh-water mussel
  2. B
    tortoise
  3. C
    frog
  4. D
    jelly fish
Question 11Single 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 12Single Answer
Electron volt is a unit of
  1. A
    potential difference
  2. B
    charge
  3. C
    energy
  4. D
    capacity
Question 13Single Answer
Dimensions of impulse are
  1. A
    [MLT –1]
  2. B
    [MLT²]
  3. C
    [MT–2]
  4. D
    [ML–1T–3]
Question 14Single Answer
Potential is measured in
  1. A
    joule/coulomb
  2. B
    watt/coulomb
  3. C
    newton–second
  4. D
    None of these
Question 15Single Answer
One Nanometer is equal to
  1. A
    10–9m
  2. B
    10–6m
  3. C
    10–10m
  4. D
    10–3m
Question 16Single Answer
Maxwell is the unit of
  1. A
    magnetic susceptibility
  2. B
    intensity of Magnetisation
  3. C
    magnetic Flux
  4. D
    magnetic Permeability
Question 17Single Answer
Which of the following is derived physical quantity ?
  1. A
    Mass
  2. B
    Velocity
  3. C
    Length
  4. D
    Time
Question 18Single 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 19Single 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 20Single 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 21Single Answer
Which of the following is not a synthetic fibre:
  1. A
    Anygora
  2. B
    Rayon
  3. C
    Nylon
  4. D
    Polyster
Question 22Single 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 23Single 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 24Single 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 25Single 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 26Single 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 27Single 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 28Single 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 29Single 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 30Single 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 31Single Answer
Which of the following contain enzymes for cellular respiration ?
  1. A
    Dictyosomes
  2. B
    Endoplasmic reticulum
  3. C
    lysosomes
  4. D
    Mitochondria
Question 32Single 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 33Single 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 34Single 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 35Single Answer
For which among the following is not a true fruit ?
  1. A
    Apple
  2. B
    Date
  3. C
    Grape
  4. D
    Plum
Question 36Single Answer
Which one of the following is not a constituent of cell membrane ?
  1. A
    Cholesterol
  2. B
    Glycoplids
  3. C
    Proline
  4. D
    Phospholipids
Question 37Single Answer
The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
  1. A
    S–phase
  2. B
    G1–phase
  3. C
    G2–phase
  4. D
    M-phase
Question 38Single Answer
During which stage of mitosis does cytokinesis usually occur in animals ?
  1. A
    Phophase
  2. B
    Metaphase
  3. C
    Anaphase
  4. D
    Telophase
Question 39Single Answer
Lysosome arises from
  1. A
    endoplasmic reticulum
  2. B
    golgi apparatus
  3. C
    nucleus
  4. D
    mitochondria
Question 40Single Answer
The correct sequence of cell cycle is
  1. A
    S, G1, G2, M
  2. B
    S, M, G1, G2
  3. C
    G1, S, G2, M
  4. D
    M, G1, G2, S

General English

Question 41Single Answer
I go to Madurai by —– Vaigai Express
  1. A
    a
  2. B
    an
  3. C
    some
  4. D
    the
Question 42Single Answer
Have the car stolen!
  1. A
    Steal the car
  2. B
    You should have the stolen car
  3. C
    Get someone to steal the car
  4. D
    They have stolen the car
Question 43Single Answer
The payment was collected by the hardworking salesman.
  1. A
    The hardworking salesman collected the payment.
  2. B
    the salesman who worked heard was able to collect the payment.
  3. C
    to collect the payment the salesman had to work hard.
  4. D
    The hardworking salesman was able to collect the payment.
Question 44Single Answer
I had to stop all my work to complete this project.
  1. A
    All other work had to be stopped to complete this project by me
  2. B
    For completing this project all other work must be stopped
  3. C
    For completing this project I had to stop all my work
  4. D
    To complete this project all other work had been stopped by me
Question 45Single Answer
They have published the names of all the successful candidates.
  1. A
    The candidates who have succeeded their names they had published.
  2. B
    The names of all the successful candidates have been published by them
  3. C
    The candidates who have succeeded their names have been published by them.
  4. D
    The names of all the successful candidate were published by them. 
Question 46Single Answer
The online shopping site lowered the prices.
  1. A
    Lowering of the prices was done by the online shopping site
  2. B
    The prices were lowered by the online shopping site
  3. C
    The prices had been lowered by the online shopping site
  4. D
    The prices have been lowered by the online shopping site
Question 47Single Answer
Who taught you to drive a truck ?
  1. A
    To drive a truck by whom were you taught?
  2. B
    Driving a truck by who were you taught?
  3. C
    Driving a truck by who were you being taught?
  4. D
    By whom were you taught to drive a truck?
Question 48Single Answer
We shall invite Suresh.
  1. A
    Suresh would be invited by us
  2. B
    Suresh would have been invited by us
  3. C
    Suresh will be invited by us
  4. D
    Suresh will have been invited by us
Question 49Single Answer
Dark clouds have overcast the evening sky.
  1. A
    By the dark clouds the evening sky was overcast.
  2. B
    The evening sky has been overcast by the dark clouds.
  3. C
    Dark clouds overcastted the evening sky.
  4. D
    The sky of the evening was overcasted by dark clouds.
Question 50Single Answer
The partners will celebrate their triumph tomorrow. 
  1. A
    The triumph would be celebrated by the partners a day before
  2. B
    The triumph would be celebrated by the partners a day after
  3. C
    The triumph would have been celebrated by the partners a day after
  4. D
    The triumph will have been celebrated by the partners tomorrow
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