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Chemistry Test - 3

  • 1.
    Supersonic jet causes pollution by thinning of

    a 
    O3 layer
    b 
    O2 layer
    c 
    SO2 layer
    d 
    CO2 layer

    Explanation:
    Subject: 
    GENERAL SCIENCE
    83.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 2.
    Cement is formed by strongly heating a mixture of

    a 
    limestone and graphite
    b 
    limestone and clay
    c 
    chalk and graduate
    d 
    clay and graphite

    Explanation:
    Subject: 
    GENERAL SCIENCE
    57.14% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 3.
    For generation of biogas, the materials commonly used are

    a 
    Animal wastes
    b 
    Crop residues
    c 
    Aquatic plants
    d 
    carbon and iron

    Explanation:
    Subject: 
    GENERAL SCIENCE
    57.14% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 4.
    The BOD values of water indicate the

    a 
    amount of organic debris
    b 
    amount of oxygen used for biochemical oxidation
    c 
    amount of oxygen used for biochemical reduction
    d 
    amount of ozone used for biochemical oxidation

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 5.
    Which of the following produces highest amount of energy upon oxidation/

    a 
    Protein
    b 
    Fat
    c 
    Glucose
    d 
    An alkane

    Explanation:
    Subject: 
    GENERAL SCIENCE
    66.67% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 6.
    The iron ore which contains 72% of iron is:

    a 
    Magnetite
    b 
    Limonite
    c 
    Haematite
    d 
    Siderite

    Explanation:
    Subject: 
    GENERAL SCIENCE
    14.29% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 7.
    Non-stick kitchenwares are coated with

    a 
    PVC
    b 
    Graphite
    c 
    Teflon
    d 
    Silicon

    Explanation:
    Subject: 
    GENERAL SCIENCE
    42.86% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 8.
    Sea weeds are important source of

    a 
    iron
    b 
    chlorine
    c 
    bromine
    d 
    iodine

    Explanation:
    Subject: 
    GENERAL SCIENCE
    42.86% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 9.
    Bone ash contains

    a 
    Calcium sulphate
    b 
    Phosphoric sulphate
    c 
    Calcium phosphate
    d 
    Calcium acetate

    Explanation:
    Subject: 
    GENERAL SCIENCE
    66.67% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 10.
    Acid secretion is characteristic of

    a 
    Buccal cavity
    b 
    Stomach
    c 
    Small intestine
    d 
    Large intestine

    Explanation:
    Subject: 
    GENERAL SCIENCE
    42.86% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 11.
    Stag is a name given for

    a 
    molten iron
    b 
    molten sand
    c 
    molten alumina
    d 
    molten calcium silicate

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 12.
    Which one of the following is used as a sowing agent in the preparation of soft drinks?

    a 
    phosphoric acid
    b 
    phosphorous acid
    c 
    Salicylic acid
    d 
    Boric acid

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 13.
    Tar roads get damaged if there is

    a 
    stagnation of water on road
    b 
    heavy traffic
    c 
    no maintenance
    d 
    no sloping

    Explanation:
    Subject: 
    GENERAL SCIENCE
    57.14% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 14.
    The drug Marijuana is a

    a 
    sedative
    b 
    mental stimulant
    c 
    hallucinating substance
    d 
    tranquillizer

    Explanation:
    Subject: 
    GENERAL SCIENCE
    16.67% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 15.
    The material known in commerce as Terylene is a

    a 
    Synthetic fibre
    b 
    Natural fibre
    c 
    Modified natural fibre
    d 
    Blend of cotton and silk

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 16.

    Commercial Vaseline is derived from

    a 
    plant gums
    b 
    coal tar
    c 
    wool wax
    d 
    petroleum
     

    Explanation:
    Subject: 
    GENERAL SCIENCE
    66.67% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 17.
    A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?

    a 
    From brown to blue-black
    b 
    From brown to orange-red
    c 
    From blue to pink
    d 
    From pink to blue –green

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 18.
    Tear gas used by the police to disperse the mob contains

    a 
    Carbon dioxide
    b 
    Chlorine
    c 
    Ammonia
    d 
    Hydrogen sulphide

    Explanation:
    Subject: 
    GENERAL SCIENCE
    16.67% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 19.
    The charcoal used to decolourise brown sugar solution is

    a 
    Wood charcoal
    b 
    Coconut charcoal
    c 
    Animal charcoal
    d 
    Sugar charcoal

    Explanation:
    Subject: 
    GENERAL SCIENCE
    42.86% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 20.
    Vinegar is a commercial name of

    a 
    Oxalic acid
    b 
    Hydrochloric acid
    c 
    Acetic acid
    d 
    Citric acid

    Explanation:
    Subject: 
    GENERAL SCIENCE
    85.71% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 21.
    The fungus which is used in the alcohol industry is

    a 
    Mushroom
    b 
    Candida Aibicans
    c 
    Yeast
    d 
    Rhizopus

    Explanation:
    Subject: 
    GENERAL SCIENCE
    71.43% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 22.
    Conduction band electrons have more mobility than holes because they

    a 
    are lighter
    b 
    experience collision less frequently
    c 
    have negative charge
    d 
    need energy to move them

    Explanation:
    Subject: 
    GENERAL SCIENCE
    16.67% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 23.
    The gas that usually causes explosions in coal mines is

    a 
    Hydrogen
    b 
    Carbon monoxide
    c 
    Air
    d 
    Methane

    Explanation:
    Subject: 
    GENERAL SCIENCE
    71.43% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 24.
    The most important ore of lead is

    a 
    Galena
    b 
    Magnetite
    c 
    Pyrolusite
    d 
    Siderite

    Explanation:
    Subject: 
    GENERAL SCIENCE
    57.14% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 25.

    The most reactive among the halogens is

    a 
    Fluorine
    b 
    Chlorine
    c 
    Bromine
    d 
    Iodine

    Explanation:
    Subject: 
    GENERAL SCIENCE
    42.86% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 26.
    KMnO4 can be used as a/an

    a 
    insecticide
    b 
    fertiliser
    c 
    pesticide
    d 
    disinfectant

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 27.
    Burning pyrites ore gives out

    a 
    Carbon dioxide gas
    b 
    Sulphur dioxide gas
    c 
    Nitrogen dioxide gas
    d 
    Nitric oxide gas

    Explanation:
    Subject: 
    GENERAL SCIENCE
    16.67% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 28.
    Oxygen has (+) oxidation number only in

    a 
    OF2
    b 
    Cl2O
    c 
    H2O
    d 
    N2O

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 29.
    Natural rubber is the polymer of:

    a 
    Isoprene
    b 
    Styrene
    c 
    Butadiene
    d 
    Ethylene

    Explanation:
    Subject: 
    GENERAL SCIENCE
    57.14% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 30.
    An electric iron has a heating element made of:

    a 
    Copper
    b 
    Tungsten
    c 
    Nichrome
    d 
    Zinc

    Explanation:
    Subject: 
    GENERAL SCIENCE
    42.86% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 31.
    Which of the following is used to increase the anti-knocking property of petrol?

    a 
    Tetramethyl lead
    b 
      Tetraethyl lead
    c 
    Trimethyl lead
    d 
    Triethyl lead

    Explanation:
    Subject: 
    GENERAL SCIENCE
    28.57% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 32.
    Bakelite is a copolymer of phenol and

    a 
    Formaldehyde
    b 
    Acetaldehyde
    c 
    Benzaldehyde
    d 
    Cinnaldehyde

    Explanation:
    Subject: 
    GENERAL SCIENCE
    14.29% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 33.
    When a spoon is to be electroplated with nickel the spoon is

    a 
    dipped in a nickel sulphate solution
    b 
    made anode and a pure nickel rod, the cathode
    c 
    made cathode and a pure nickel, red, the anode
    d 
    coated with nickel sulphate and dried

    Explanation:
    Subject: 
    GENERAL SCIENCE
    14.29% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 34.
    The gas used to dilute oxygen for breathing by deep sea divers is:

    a 
    Neon
    b 
    Argon
    c 
    Nitrogen
    d 
    Helium

    Explanation:
    Subject: 
    GENERAL SCIENCE
    42.86% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 35.
    Bleaching powder is prepared by passing;

    a 
    Chlorine over slaked lime
    b 
    Oxygen over slaked lime
    c 
    Carbon dioxide over slaked lime
    d 
    Chlorine over quick lime

    Explanation:
    Subject: 
    GENERAL SCIENCE
    57.14% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 36.
    Permanent – hardness of water may be removed by addition of

    a 
    Alum
    b 
    Sodium carbonate
    c 
    Lime
    d 
    Potassium permanganate

    Explanation:
    Subject: 
    GENERAL SCIENCE
    83.33% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 37.
    Which of the following processes is used for the production of Biodiesel?

    a 
    Transamination
    b 
    Transcription
    c 
    Transesterification
    d 
    Translation
    Explanation:
    Subject: 
    GENERAL SCIENCE
    60.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 38.
    Find the odd one:

    a 
    Marble
    b 
    Chalk
    c 
    Limestone
    d 
    Slaked lime

    Explanation:
    Subject: 
    GENERAL SCIENCE
    20.00% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 39.
    “Fire – fighting clothes” are made from

    a 
    Mica
    b 
    Asbestos
    c 
    Talc
    d 
    Steatite

    Explanation:
    Subject: 
    GENERAL SCIENCE
    20.00% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 40.
    Water gas is the mixture of

    a 
    carbon dioxide and hydrogen
    b 
    carbon monoxide and nitrogen
    c 
    carbon monoxide and hydrogen
    d 
    carbon dioxide and nitrogen

    Explanation:
    Subject: 
    GENERAL SCIENCE
    16.67% users answered right
    Correct Answer: a
    Comment · 1 · 
  • 41.
    Which of the following causes the rusting of iron?
    (A) Oxidation
    (B) Reduction
    (C) Chemical reaction with CO2

    a 
    A and B
    b 
    B and C
    c 
    C and A
    d 
    A and C

    Explanation:
    Subject: 
    GENERAL SCIENCE
    16.67% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 42.
    Black lung disease occurs in people working in

    a 
    Electroplating industry
    b 
    Organic solvents industry
    c 
    Paint manufacturing industry
    d 
    Coal mines

    Explanation:
    Subject: 
    GENERAL SCIENCE
    40.00% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 43.
    The chemical substances present in bones and teeth is

    a 
    Calcium phosphate
    b 
    Calcium chloride
    c 
    Calcium sulphate
    d 
    Calcium borate

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: a
    Comment · 0 · 
  • 44.
    Which one of the following is known as the browncoal?

    a 
    Anthracite
    b 
    Bituminous
    c 
    Coke
    d 
    Lignite

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 45.
    A matured mammalian cell with out nucleus is

    a 
    Lymphocyte
    b 
    Erythrocyte
    c 
    Spermatozoan
    d 
    Oocyte

    Explanation:
    Subject: 
    GENERAL SCIENCE
    20.00% users answered right
    Correct Answer: b
    Comment · 0 · 
  • 46.
    The most common cause of pollution of air is

    a 
    Carbon dioxide
    b 
    Carbon monoxide
    c 
    Sulphur dioxide
    d 
    Smoke

    Explanation:
    Subject: 
    GENERAL SCIENCE
    33.33% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 47.
    Charcoal is used in water treatment as a/an

    a 
    absorbent
    b 
    coagulant
    c 
    solvent
    d 
    adsorbent

    Explanation:
    Subject: 
    GENERAL SCIENCE
    40.00% users answered right
    Correct Answer: d
    Comment · 0 · 
  • 48.
    The liquid waste from kitchens and baths, of residences is known as

    a 
    Domestic sewage
    b 
    Storm water
    c 
    Sullage
    d 
    Refuse

    Explanation:
    Subject: 
    GENERAL SCIENCE
    40.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 49.
    The lightest radioactive element is

    a 
    deuterium
    b 
    polonium
    c 
    tritium
    d 
    uranium

    Explanation:
    Subject: 
    GENERAL SCIENCE
    50.00% users answered right
    Correct Answer: c
    Comment · 0 · 
  • 50.
    An element that does not occur in nature but can be produced artificially is

    a 
    thorium
    b 
    radium
    c 
    plutonium
    d 
    uranium
    Explanation:
    Subject: 
    GENERAL SCIENCE
    66.67% users answered right
    Correct Answer: c
    Comment · 0 ·