Practice MCQ General Science

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3833 Which of the following is a non metal that remains liquid at room temperature?
Options:Phosphorous,    Bromine,    Chlorine,    Helium

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3834 Chlorophyll is a naturally occurring chelate compound in which central metal is
Options:copper,    magnesium,    iron,    calcium

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3835 Which of the following is used in pencils?
Options:Graphite,    Silicon,    Charcoal,    Phosphorous

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3836 Which of the following metals forms an amalgam with other metals?
Options:Tin,    Mercury,    Lead,    Zinc

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3837 Chemical formula for water is
Options:NaAlO2,    H2O,    Al2O3,    CaSiO3

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3838 The gas usually filled in the electric bulb is
Options:nitrogen,    hydrogen,    carbon dioxide,    oxygen

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3839 Washing soda is the common name for
Options:Sodium carbonate,    Calcium bicarbonate,    Sodium bicarbonate,    Calcium carbonate

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3840 Quartz crystals normally used in quartz clocks etc. is chemically
Options:silicon dioxide,    germanium oxide,    a mixture of germanium oxide and silicon dioxide,    sodium silicate

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3841 Which of the gas is not known as green house gas?
Options:Methane,    Nitrous oxide,    Carbon dioxide,    Hydrogen

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3842 Bromine is a
Options:black solid,    red liquid,    colourless gas,    highly inflammable gas

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3843 The hardest substance available on earth is
Options:Gold,    Iron,    Diamond,    Platinum

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3844 The variety of coal in which the deposit contains recognisable traces of the original plant material is
Options:bitumen,    anthracite,    lignite,    peat

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3845 Tetraethyl lead is used as
Options:pain killer,    fire extinguisher,    mosquito repellent,    petrol additive

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3846 Which of the following is used as a lubricant?
Options:Graphite,    Silica,    Iron Oxide,    Diamond

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3847 The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
Options:Argon,    Xenon,    Helium,    Krypton

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3848 The gases used in different types of welding would include
Options:oxygen and hydrogen,    oxygen, hydrogen, acetylene and nitrogen,    oxygen, acetylene and argon,    oxygen and acetylene

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3849 The property of a substance to absorb moisture from the air on exposure is called
Options:osmosis,    deliquescence,    efflorescence,    desiccation

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3850 In which of the following activities silicon carbide is used?
Options:Making cement and glass,    Disinfecting water of ponds,    cutting very hard substances,    Making casts for statues

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3851 The average salinity of sea water is
Options:3%,    3.5%,    2.5%,    2%

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3852 When an iron nail gets rusted, iron oxide is formed
Options:without any change in the weight of the nail,    with decrease in the weight of the nail,    with increase in the weight of the nail,    without any change in colour or weight of the nail

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3853 Galvanised iron sheets have a coating of
Options:lead,    chromium,    zinc,    tin

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3854 Among the various allotropes of carbon,
Options:coke is the hardest, graphite is the softest,    diamond is the hardest, coke is the softest,    diamond is the hardest, graphite is the softest,    diamond is the hardest, lamp black is the softest

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3855 The group of metals Fe, Co, Ni may best called as
Options:transition metals,    main group metals,    alkali metals,    rare metals

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3856 Heavy water is
Options:deuterium oxide,    PH7,    rain water,    tritium oxide

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3857 The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
Options:bromine,    fluorine,    chlorine,    sulphur

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3858 The element common to all acids is
Options:hydrogen,    carbon,    sulphur,    oxygen

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3859 Non stick cooking utensils are coated with
Options:Teflon,    PVC,    black paint,    polystyrene

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3860 Monazite is an ore of
Options:titanium,    zirconium,    iron,    thorium

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3861 Carbon, diamond and graphite are together called
Options:allotropes,    isomers,    isomorphs,    isotopes

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3862 Potassium nitrate is used in
Options:medicine,    fertiliser,    salt,    glass

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3863 Permanent hardness of water may be removed by the addition of
Options:sodium carbonate,    alum,    potassium permanganate,    lime

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3864 Soda water contains
Options:carbonic acid,    sulphuric acid,    carbon dioxide,    nitrous acid

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3865 Most soluble in water is
Options:camphor,    sulphur,    common salt,    sugar

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3866 Which of the following was to be discovered first in the chromospheres of the sun?
Options:Krypton,    Xenon,    Neon,    Helium

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3867 Which of the following is in liquid form at room temperature?
Options:Lithium,    Sodium,    Francium,    Cerium

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3868 Sodium metal is kept under
Options:petrol,    alcohol,    water,    kerosene

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3869 Which of the following are the ingredients of gun metal?
Options:Iron, Zinc, Titanium,    Iron, tin,    Iron, Brass, Tin,    Copper, Tin

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3870 From which mineral is radium obtained?
Options:Rutile,    Haematite,    Limestone,    Pitchblende

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3871 What is laughing gas?
Options:Nitrous Oxide,    Carbon monoxide,    Sulphur dioxide,    Hydrogen peroxide

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3872 Actinides are the elements with atomic numbers from
Options:97 to 104,    101 to 115,    89 to 103,    36 from 43

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3873 The two elements that are frequently used for making transistors are
Options:boron and aluminium,    silicon and germanium,    iridium and tungsten,    niobium and columbium

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3874 The filament of an electric bulb is made of
Options:tungsten,    nichrome,    graphite,    iron

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3875 Diamond is an allotropic form of
Options:germanium,    carbon,    silicon,    sulphur

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3876 In fireworks, the green flame is produced because of
Options:sodium,    barium,    mercury,    potassium

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3877 Permanent hardness of water can be removed by adding
Options:chlorine,    washing soda,    potassium permanganate,    bleaching powder

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3878 Marsh gas is
Options:nitrogen,    ethane,    methane,    hydrogen

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3879 LPG consists of mainly
Options:methane, ethane and hexane,    ethane, hexane and nonane,    methane, hexane and nonane,    methane, butane and propane

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3880 Air is a/an
Options:compound,    element,    electrolyte,    mixture

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3881 Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
Options:Television,    Refrigerator,    Tube light,    Cooking gas

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3882 Balloons are filled with
Options:nitrogen,    helium,    oxygen,    argon

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