II MCQ

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• Which of the following is not an important characteristic of the Green Revolution?
  ক

  mechanized agriculture

  খ

  hybrid seeds

  গ

  slash and burn

  ঘ

  monoculture
• How the biological oxygen demand gets affected with the increased presence of organic matter in water?
  ক

  the oxygen demand increases

  খ

  the oxygen demand decreases

  গ

  the oxygen demand remains unchanged

  ঘ

  none of the mentioned
• Proximate analysis of coal determines its __________ content.
  ক

  moisture, ash, sulphur & volatile matter

  খ

  moisture, volatile matter, ash & fixed carbon

  গ

  moisture, sulphur, nitrogen & fixed carbon

  ঘ

  none of the mentioned
• Which of the following petrographic constituents of coal is non-coking?
  ক

  Durain

  খ

  Vitrain

  গ

  Clarain

  ঘ

  Fussain
• Abrasion index of blast furnace coke should be around __________ percent.
  ক

  20

  খ

  35

  গ

  80

  ঘ

  55
• __________ prohibits the use of alcohols directly in petrol engines.
  ক

  High cost & difficult availability

  খ

  Low octane number

  গ

  Low flash point

  ঘ

  Low calorific value
• Which of the following is the maximum coal producing state in India?
  ক

  Orissa

  খ

  West Bengal

  গ

  Jharkhand

  ঘ

  Assam
• Bunsen burner is an example of a/an __________ burner.
  ক

  inside mixing/premix type

  খ

  submerged combustion

  গ

  rotary cup

  ঘ

  outside mixing/diffusion flame/nozzle mix type
• Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine?
  ক

  inlet valve closing before bottom dead centre

  খ

  inlet valve closing after bottom dead centre

  গ

  inlet valve opening before top dead centre

  ঘ

  exhaust valve closing after top dead centre
• In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.
  ক

  equal to

  খ

  below

  গ

  above

  ঘ

  middle
• Extraction of uranium from its ore is done using __________ methods.
  ক

  chemical

  খ

  pyrometallurgical

  গ

  electrometallurgical

  ঘ

  physical benefaction
• Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission.
  ক

  less than

  খ

  equal to

  গ

  either more or less

  ঘ

  more than
• Which of the following nuclear materials is fissile?
  ক

  U-239

  খ

  U-235

  গ

  U-232

  ঘ

  Pu-239
• Which is a fertile nuclear fuel?
  ক

  U-233

  খ

  U-235

  গ

  Pu-239

  ঘ

  Th-232
• Which is the most commonly used molten metal for cooling of nuclear reactors?
  ক

  Zinc

  খ

  Sulphur

  গ

  Sodium

  ঘ

  Manganese
• Which of the following is not a naturally occurring nuclear fuel?
  ক

  Uranium-238

  খ

  Thorium-233

  গ

  Plutonium-239

  ঘ

  None of the mentioned
• The mass number of an element is not changed, when it emits __________ radiations.
  ক

  α & γ

  খ

  α, β, & γ

  গ

  α & β

  ঘ

  β & γ
• Which of the following may not need a moderator?
  ক

  Candu Reactor

  খ

  Fast Breeder Reactor

  গ

  Homogeneous Reactor

  ঘ

  none of the mentioned
• Which of the following may be used to measure the rate of nuclear disintegration?
  ক

  Geiger-Muller Counter

  খ

  Cold Chamber

  গ

  Cyclotron

  ঘ

  Van De Graph Generator
• In pneumatic control systems the control valve used as final control element converts
  ক

  Pressure signal to electric signal

  খ

  Pressure signal to position change

  গ

  Electric signal to pressure signal

  ঘ

  Position change to pressure signal
• What is the code snippet to change the class and let the stylesheet specify the details?
  ক

  timestamp.className = “highlight”;

  খ

  timestamp.className = “change”;

  গ

  timestamp.className = “specify”;

  ঘ

  timestamp.className = “move”;
• Which of the following are static methods in JavaScript?
  ক

  Date.parse()

  খ

  Date.UTC()

  গ

  Both Date.parse() and Date.UTC()

  ঘ

  Date.clear()
• How many static methods does a Date object have?
  ক

  3

  খ

  5

  গ

  4

  ঘ

  2
• What is the purpose of the Math method toSource()?
  ক

  Returns the string “Math”

  খ

  Sends the source to the Math Library

  গ

  Returns the value of the object

  ঘ

  Returns an integer value
• Which of the following is not a JavaScript framework?
  ক

  Rico

  খ

  Prototype

  গ

  Joco

  ঘ

  DoJo
• How to lazy load images?
  ক

  Remove the rel attribute

  খ

  Remove the src attribute

  গ

  Make rel = src

  ঘ

  Make src = rel
• What should be the value of the type attribute of a variable if the type of file is CSS?
  ক

  text/js/css

  খ

  text/js

  গ

  text/css

  ঘ

  text
• What does the appendChild() method perform?
  ক

  Appends a node in the middle of the index taken as the parameter

  খ

  Appends a node as the first child

  গ

  Appends a node as the last child

  ঘ

  Replaces and appends at the last node
• What is the purpose of holding whatever tag you create in the attribute type?
  ক

  To have more information

  খ

  To identify the scripting language

  গ

  To store data

  ঘ

  To store variable name
• What is the purpose of the method localeCompare()?
  ক

  If the reference string comes before or after another string

  খ

  If the reference string is validated

  গ

  If the string is a reference string

  ঘ

  If the reference string comes first