Please wait...

Chemistry Test 29
Menu grid icon
Result Result point icon
Chemistry Test 29
  • Goals icon

    /

    Score
  • Trophy icon

    -

    Rank
White alarm icon Time Taken: -
Result frame illustration
  • Question 1/10
    1 / -0

    Metals can be in ____ state at room temperature.

    Solutions
    All metals except Mercury are solid at room temperature. Mercury is the only metallic element that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under 'these conditions is bromine.
  • Question 2/10
    1 / -0
    The chief constituent of Natural gas is_____.
    Solutions
    Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane (CH4). However it also includes varying amounts of other higher alkanes (ethane, propane), and a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.
  • Question 3/10
    1 / -0
    Which of the following acids serves as an electrolyte in a lead storage battery?
    Solutions
    Dilute sulfuric acid (H2S04) serves as the electrolyte in a lead-acid battery. Dilute sulfuric acid used for lead acid battery has ratio (to water) of 3:1 other components of the battery include: Lead peroxide (PbO2) and Sponge lead (Pb).
  • Question 4/10
    1 / -0
    Which of the following is used to make light weight, but strong plastic?
    Solutions
    • Polyvinyl chloride (PVC) is a common, strong but light ­weight plastic that is used in making tough plastic.
    • It is used for flexible applications such as insulating cables. It is the third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene. 
  • Question 5/10
    1 / -0
    Which of the following has the highest penetrating power ?
    Solutions
    The penetrating power is inversely related to size. Alpha particles , being the largest , penetrate the least. Gamma rays are the most penetrating of the radiations. They are highly energetic waves and are poor at ionizing other atoms molecules.
  • Question 6/10
    1 / -0
    The biological decomposition of organic substances in wastes under controlled conditions known as
    Solutions

    • Composting is an aerobic method of decomposing organic solid wastes. It can therefore be used to recycle organic material.

    • The process involves decomposition of organic material into a humus-like material, known as compost, which is a good fertilizer for plants.

  • Question 7/10
    1 / -0
    Nitrogen is commonly found in water in the form of ________
    Solutions
    Nitrate (N03) is the most common form of inorganic nitrogen in unpolluted waters. Nitrate moves readily through soils and into ground water, where concentrations can be much higher than in surface waters. Water in coastal areas mainly contains elementary nitrogen gas (N2).
  • Question 8/10
    1 / -0
    Which of the following is a greenhouse gas?
    I. Water vapour
    II. Carbon dioxide
    III. Hydrogen Gas
    Solutions
    Following are the most common greenhouse gases:-
    • Water vapor
    • Carbon dioxide 
    • Methane
    • Nitrous oxide 
    • Ozone 
    • Chlorofluorocarbons (CFCs)
    • Hydrofluorocarbons
  • Question 9/10
    1 / -0
    Which of the following is not a characteristic of a solid?
    Solutions
    • High compressibility is not a characteristic of a solid. Compressibility is the ability of molecules in a fluid to be compacted or compressed (made more dense) and their ability to bounce back to their original density.
    • The molecules of solid are highly enclosed to each other that’s they don’t possess the compressibility characteristic.
  • Question 10/10
    1 / -0
    In Aqua Regia which two acids are mixed in ratio of 3 : 1?
    Solutions
    Aqua Regia is a mixture of nitric acid and hydrochloric acid which is a yellow-orange fuming liquid. It can dissolve the noble metals gold and platinum, though not all metals. In Aqua Regia, HCL and HNO3 are mixed in optically molar ratio of 3: 1. The chemical formula‎ of Aqua
    Regia is     ‎HNO3+3 HCl.
Close button icon
User Profile
-

Correct (-)

Wrong (-)

Skipped (-)

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Mockers logo Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Arrow pointer icon
Click on Allow to receive notifications
Notification bell icon ×
Open Now