Header Ads

Chemistry Test - 2

  • 1.
    The substance most commonly used as a food preservatives is

    a 
    sodium carbonate
    b 
    tartaric acid
    c 
    acetic acid
    d 
    sodium salt of benzoic acid

    Explanation:
    Subject: 
    GENERAL SCIENCE
    26.32% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 2.
    Alum stops bleeding in minor cuts because of

    a 
    solvation
    b 
    emulsion
    c 
    dialysis
    d 
    coagulation

    Explanation:
    Subject: 
    GENERAL SCIENCE
    73.68% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 3.
    Water can be separated from alcohol water mixture by

    a 
    decantation
    b 
    evaporation
    c 
    distillation
    d 
    sublimation

    Explanation:
    Subject: 
    GENERAL SCIENCE
    36.84% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 4.

    Hydrogen is not found in atmosphere because

    a 
    it is highly inflammable
    b 
    it is the lightest gas
    c 
    it is absorbed by plants
    d 
    it immediately combines with oxygen to form water
     

    Explanation:
    Subject: 
    GENERAL SCIENCE
    41.18% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 5.
    For determination of the age of which among the following is carbon dating method used?

    a 
    Fossils
    b 
    Rocks
    c 
    Trees
    d 
    1 & 2 above

    Explanation:
    Subject: 
    GENERAL SCIENCE
    56.25% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 6.
    A substance which readily forms colloidal solution in contact with water is called

    a 
    Extrinsic colloid
    b 
    Associated colloid
    c 
    Hydrophobic colloid
    d 
    Hydrophilic colloid

    Explanation:
    Subject: 
    GENERAL SCIENCE
    53.33% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 7.
    When conc.H2SO is added to dry KNO3, brown fumes are evolved. These fumes are due to

    a 
    SO3
    b 
    SO2
    c 
    NO2
    d 
    N2O

    Explanation:
    Subject: 
    GENERAL SCIENCE
    61.54% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 8.
    The polymer used in making plastic crockery is

    a 
    Decron
    b 
    Nylon
    c 
    Bakelite
    d 
    Melamine

    Explanation:
    Subject: 
    GENERAL SCIENCE
    7.14% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 9.
    Preparation of Dalda or Vanaspati ghee from vegetable oil utilizes the following process:

    a 
    Hydrolysis
    b 
    Oxidation
    c 
    Hydrogenation
    d 
    Ozonolysis

    Explanation:
    Subject: 
    GENERAL SCIENCE
    66.67% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 10.
    Which of the following chemicals is used in photography?

    a 
    Aluminium hydroxide
    b 
    Silver bromide
    c 
    Potassium nitrate
    d 
    Sodium chloride

    Explanation:
    Subject: 
    GENERAL SCIENCE
    80.00% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 11.
    Which gas is used as fire extinguisher?

    a 
    Carbon dioxide
    b 
    carbon monoxide
    c 
    carbon suboxide
    d 
    sulpur dioxide

    Explanation:
    Subject: 
    GENERAL SCIENCE
    73.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 12.
    Cream gets separated out of milk when it is churned. This is due to

    a 
    gravitational force
    b 
    centripetal force
    c 
      centrifugal force
    d 
    frictional force

    Explanation:
    Subject: 
    GENERAL SCIENCE
    71.43% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 13.
    The Lustre of the metals is because of

    a 
    high density, due to closed packing of atoms
    b 
    high polish
    c 
    reflection of light due to the presence of free electrons
    d 
    absorption of light due to the presence of cavities

    Explanation:
    Subject: 
    GENERAL SCIENCE
    46.15% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 14.
    Pasteurisation is the process which milk is heated to

    a 
    600C for 10 minutes
    b 
    630C for 20 minutes
    c 
    630C for 30 minutes
    d 
    720C for 10 minutes

    Explanation:
    Subject: 
    GENERAL SCIENCE
    25.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 15.
    The freezer in a refrigerator fitted near the top

    a 
    to keep it away from hot compressor which is nearer to the botton
    b 
    because of convenience
    c 
    it facilities convection currents
    d 
    to minimise power consumption

    Explanation:
    Subject: 
    GENERAL SCIENCE
    41.67% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 16.
    Denatured spirit is ethanol mixed with

    a 
    Petrol
    b 
    Kerosene
    c 
    Water
    d 
    Pyridine

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 17.
    The most abundant inert gas in the atmosphere is

    a 
    Helium
    b 
    Neon
    c 
    Argon
    d 
    Krypton

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 18.
    Which metal is extracted from sea water?

    a 
    Potassium
    b 
    Magnesium
    c 
    Aluminium
    d 
    Beryllium

    Explanation:
    Subject: 
    GENERAL SCIENCE
    41.67% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 19.
    Water is not effective in extinguishing a fire caused by petrol because

    a 
    the flame is too hot for water to cool it down
    b 
    water and petrol react chemically
    c 
    water and petrol are miscible with each other
    d 
    water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

    Explanation:
    Subject: 
    GENERAL SCIENCE
    63.64% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 20.
    Ruby and sapphire are oxides of

    a 
    copper
    b 
    tin
    c 
    iron
    d 
    aluminium

    Explanation:
    Subject: 
    GENERAL SCIENCE
    15.38% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 21.
    The gas which turns into liquid at the lowest temperature among the following is

    a 
    hydrogen
    b 
    oxygen
    c 
    helium
    d 
    nitrogen

    Explanation:
    Subject: 
    GENERAL SCIENCE
    45.45% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 22.
    Detergents clean surface on the principle of

    a 
    viscosity
    b 
    surface tension
    c 
    elasticity
    d 
    floatation

    Explanation:
    Subject: 
    GENERAL SCIENCE
    85.71% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 23.
    Ammonial is a mixture of

    a 
    aluminium powder and ammonium nitrate
    b 
    aluminium powder and ammonium chloride
    c 
    aluminium powder and ammonium sulphate
    d 
    aluminium powder and ammonium nitrate

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: a
    Comment · 1 · 
  • 24.
    White coal is

    a 
    Uranium
    b 
    Hydro-electricity
    c 
    Diamond
    d 
    Ice

    Explanation:
    Subject: 
    GENERAL SCIENCE
    16.67% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 25.
    The residue left after extracting juice from sugarbeet and sugarcane is called

    a 
    molasses
    b 
    bagasse
    c 
    whey
    d 
    biomass

    Explanation:
    Subject: 
    GENERAL SCIENCE
    54.55% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 26.
    Candle is a mixture of

    a 
    paraffin was and stearic acid
    b 
    Bees wax and stearic acid
    c 
    Higher fatty acids and stearic acid
    d 
    Bees wax and paraffin wax

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 27.
    Aqua regia is a 1:3 mixture, by volume, of

    a 
    conc. nitric acid and conc. Hydrochloric acid
    b 
    conc. Hydrochloric acid and conc. nitric acid
    c 
    conc. nitric acid and conc. Sulphuric acid
    d 
    conc. Sulphuric acid and conc. nitric acid

    Explanation:
    Subject: 
    GENERAL SCIENCE
    36.36% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 28.
    What is the maximum Water Vapour content in the atmosphere?

    a 
    2 to 3 per cent
    b 
    3 to 4 per cent
    c 
    4 to 5 per cent
    d 
    5 to 6 per cent

    Explanation:
    Subject: 
    GENERAL SCIENCE
    45.45% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 29.
    The amount of chlorine available in water after disinfection is called as

    a 
    free chlorine
    b 
    residual chlorine
    c 
    free available chlorine
    d 
    combined available chlorine

    Explanation:
    Subject: 
    GENERAL SCIENCE
    58.33% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 30.

    Nuclear energy is a mineral based energy source, It is derived from

    a 
    uranium
    b 
    thorium
    c 
    plutonium
    d 
    All of the above
     

    Explanation:
    Subject: 
    GENERAL SCIENCE
    76.92% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 31.
    Zinc sulphate is commonly used as

    a 
    fungicide
    b 
    herbicide
    c 
    rodenticide
    d 
    deodorant

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 32.
    Aspirin is chemically known as

    a 
    methyl salicylate
    b 
    hydroxysalicylate
    c 
    acetylsalicylic acid
    d 
    alkylsalicylic acid

    Explanation:
    Subject: 
    GENERAL SCIENCE
    46.15% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 33.
    Wax used for making candle is chemically a mixture  of

    a 
    aliphatic hydrocarbons
    b 
    aromatic  hydrocarbons
    c 
    cyclic hydrocarbons
    d 
    aliphatic and aromatic hydrocarbons

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 34.
    Photo oxidation process is initiated by

    a 
    light
    b 
    heat
    c 
    oxygen
    d 
    catalyst

    Explanation:
    Subject: 
    GENERAL SCIENCE
    85.71% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 35.
    Major gaseous pollutant of the thermal power station is

    a 
    H2S
    b 
    NH3
    c 
    NO2
    d 
    SO2

    Explanation:
    Subject: 
    GENERAL SCIENCE
    30.77% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 36.
    Mortar is a mixture of water, sand and

    a 
    Slaked lime
    b 
    Quick lime
    c 
    Limestone
    d 
    Gypsum

    Explanation:
    Subject: 
    GENERAL SCIENCE
    7.69% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 37.
    Which of the following substance is highly plastic?

    a 
    Quartz
    b 
    Mica
    c 
    Granite
    d 
    Clay

    Explanation:
    Subject: 
    GENERAL SCIENCE
    25.00% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 38.
    The National Chemical Laboratory (India) is located in

    a 
    Mumbai
    b 
    Bangaluru
    c 
    Hyderabad
    d 
    Pune

    Explanation:
    Subject: 
    GENERAL SCIENCE
    81.82% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 39.
    Which of the following metals does not react with water to produce Hydrogen?

    a 
    Potassium
    b 
    Cadmium
    c 
    Sodium
    d 
    Lithium

    Explanation:
    Subject: 
    GENERAL SCIENCE
    46.15% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 40.
    One of the constituents of tear gas is

    a 
    Ethane
    b 
    Ethanol
    c 
    Ether
    d 
    Chloropicrin

    Explanation:
    Subject: 
    GENERAL SCIENCE
    18.18% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 41.
    Silver halides are used in photographic plates because they are

    a 
    oxidised in air
    b 
    soluble in hyposolution
    c 
    reduced by light
    d 
    totally colourless

    Explanation:
    Subject: 
    GENERAL SCIENCE
    30.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 42.
    Tetra ethyle lead (TEL) is

    a 
    a catalyst in burning fossil fuel
    b 
    an antioxidant
    c 
    a reductant
    d 
    an antiknock compound

    Explanation:
    Subject: 
    GENERAL SCIENCE
    58.33% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 43.
    If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by

    a 
    Mercury
    b 
    Lead
    c 
    Iron
    d 
    Arsenic

    Explanation:
    Subject: 
    GENERAL SCIENCE
    76.92% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 44.
    Detergents are

    a 
    sodium salts of fatty acids
    b 
    sodium salts of sulphuric acids
    c 
    sodium salt of benzoic acid
    d 
    None of the above

    Explanation:
    Subject: 
    GENERAL SCIENCE
    0.00% users answered right
    Correct Answer: b
    Comment · 1 · 
  • 45.

    The chemical(s) most commonly used for cloud seeding or artificialramakg is/are

    a 
    Silver Iodide
    b 
    Sodium Chloride
    c 
    Dry ice or frozen carbon dioxide
    d 
    All the above
     

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 46.
    The noble gas used in radiotherapy is

    a 
    neon
    b 
    argon
    c 
    radon
    d 
    xenon

    Explanation:
    Subject: 
    GENERAL SCIENCE
    53.85% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 47.
    White phosphorus is always kept under

    a 
    benzene
    b 
    kerosene
    c 
    ether
    d 
    water

    Explanation:
    Subject: 
    GENERAL SCIENCE
    30.77% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 48.
    Galena is a mineral of

    a 
    iron
    b 
    gold
    c 
    lead
    d 
    calcium

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 49.
    Magnalium is an alloy of

    a 
    Aluminium and Magnesium
    b 
    Magnesium and Tin
    c 
    Aluminium and Zinc
    d 
    Manganese and Magnesium

    Explanation:
    Subject: 
    GENERAL SCIENCE
    60.00% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 50.

    Cooking gas is a mixture of

    a 
    methane and ethylene
    b 
    carbon dioxide and oxygen
    c 
    butane and propane
    d 
    carbon monoxide and carbon dioxide
    Explanation:
    Subject: 
    GENERAL SCIENCE
    57.14% users answered right
    Correct Answer: c
    Comment · 3 ·