Basic Science (MCQ) (Pages :22)

  • 91 Potassium is extracted by the electrolysis of?

    (A) Fused KOH
    (B) KBr
    (C) KCL
    (D) None
  • 92 Azola anabana is used as fertilizer in growing the crop?

    (A) Wheat
    (B) Rice
    (C) Mustard
    (D) Cotton
  • 93 Which is the incorrect statement of the following?

    (A) Photon is a particle with zero rest mass
    (B) Photon is a particle with zero momentum
    (C) Photon travels with velocity of light in vacuum
    (D) Photon even feel the pull of gravity
  • 94 At what temperature are the temperature on Celsius and Fahrenheit scales equal?

    (A) 273º Celsius
    (B) 273º Celsius
    (C) 40º Celsius
    (D) 40º Celsius
  • 95 The rate of diffusion of hydrogen is about?

    (A) One half that of helium
    (B) 1.4 times that of helium
    (C) Twice that of helium
    (D) Four times that of helium
  • 96 A catalyst increases the rate of a chemical reaction by?

    (A) Increasing the activation energy
    (B) Decreasing the activation energy
    (C) Reacting with reactants
    (D) Reacting with products
  • 97 Absolute zero is the temperature where all gases are expected to have?

    (A) Difference volumes
    (B) Same volume
    (C) Zero volume
    (D) None of these
  • 98 Domestic cooking gas consists of mostly?

    (A) Methane and ethane
    (B) Liquefied butane and iso-butane
    (C) Ethylene and carbon monoxide
    (D) Hydrogen and acetylene
  • 99 Which one is the weakest acid?

    (A) HF
    (B) HCL
    (C) HBr
    (D) HI
  • 100 How many electrons are there in Na+?

    (A) 1
    (B) 10
    (C) 11
    (D) 12
  • 101 Which of the following in the correct device for the detection of thermal radiation?

    (A) Constant volume gas thermometer
    (B) Liquid-in-glass thermometer
    (C) Thermopile
    (D) None of these
  • 102 Which one of the following is not a mixture –?

    (A) air
    (B) mercury
    (C) milk
    (D) cement
  • 103 Who is known as father of medicine?

    (A) Aristotle
    (B) Theophrastus
    (C) Hippocrates
    (D) Edward Jenner
  • 104 The frequency of Ac mains in India is?

    (A) 100 Hz
    (B) 50 Hz
    (C) 1/100 Hz
    (D) 1/50 Hz
  • 105 The boiling point of a liquid is?

    (A) Affected by addition of soluble solid
    (B) Increase with increase of pressure
    (C) Both a) and b)
    (D) None of these
  • 106 Fat can be separated from milk in a cream separator because of?

    (A) Cohesive force
    (B) Gravitational force
    (C) Centripetal force
    (D) Centrifugal force
  • 107 The first indication that a stable nucleus can be broken down was afforded by?

    (A) Rutherford
    (B) Madam curie
    (C) Soddy
    (D) Schmidt
  • 108 Fire in the diesel engine is produces by which of the following?.?

    (A) Compression
    (B) Spark plug
    (C) Friction
    (D) Self starter
  • 109 The standard heat of formation of diamond is?

    (A) Same as that of graphite
    (B) Greater than of graphite
    (C) Less than of graphite
    (D) Less than that of graphite
  • 110 Ampere rule is used to find the?

    (A) Direction of current
    (B) Direction of magnetic field
    (C) Direction of motion of the conductor
    (D) None of these
  • 111 In an isothermal change an ideal gas obey’s?

    (A) Boyle’s law
    (B) Charle’s law
    (C) Gay-Issac's law
    (D) None of these
  • 112 A floating body always displaces liquid equal to its own?

    (A) Mass
    (B) Volume
    (C) Weight
    (D) None
  • 113 When seen in green light the saffron and green portions of our national flag will appear as?

    (A) Black
    (B) Black and green respectively
    (C) Green
    (D) Green and yellow respectively
  • 114 Palaeobotany is the branch of botany is which we study about?

    (A) Animal fosills
    (B) Plant fossils
    (C) Seed of plant
    (D) Flower?
  • 115 In neutralisation reaction product is?

    (A) Acid
    (B) Base
    (C) Salt & water
    (D) None
  • 116 A Closed bottle containing water at room temperature is taken to the moon and then the lid is opened. The water will?

    (A) Freeze
    (B) Boil
    (C) Decompose into hydrogen and oxygen
    (D) Not change at all
  • 117 Scientist who is known as father of Botany –?

    (A) Aristotle
    (B) Darwin
    (C) Theophrastus
    (D) Linneus
  • 118 Pyroligneous acid contains?

    (A) 2% acetic acid
    (B) 50% acetic acid
    (C) 10% acetic acid
    (D) 20% acetic acid
  • 119 Fahrenheit scale divides two fixed points into?

    (A) 180 Parts
    (B) 212 Parts
    (C) 100 Parts
    (D) 32 Parts
  • 120 A main in a train moving at a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is?

    (A) A straight line
    (B) A circle
    (C) A parabola
    (D) None of the above

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