Geas Chemistry Quiz-4

50 Questions

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Chemistry Quizzes & Trivia

GEAS CHEMISTRY


Questions and Answers
  • 1. 
    • A. 

      4.01 x 10^6 g

    • B. 

      6.01 x 10^ 6 g

    • C. 

      5.01 x 10^ 6 g

    • D. 

      3.01 x 10^ 6 g

  • 2. 
    The reaction of 6.54 g of zinc and 3.20 g of oxygen produces 9.74 g of zinc oxide, the only compound of theses elements. How much zinc oxide would be produced if 6.54 g of zinc and 5.00 g of oxygen were mixed and allowed to react?
    • A. 

      7.12 g

    • B. 

      9.74 g

    • C. 

      6.89 g

    • D. 

      8.12 g

  • 3. 
    • A. 

      11.06 g

    • B. 

      14.90 g

    • C. 

      13.07 g

    • D. 

      12.89 g

  • 4. 
    How much oxygen is required to convert 11.24 g of cadmium to 12.84 g of cadmium oxide?
    • A. 

      1.82 g

    • B. 

      1.60 g

    • C. 

      1.34 g

    • D. 

      1.28 g

  • 5. 
    Calculate the number of atomes in a 3.50 mol of atoms?
    • A. 

      2.11 x 10^24

    • B. 

      4.11 x 10^24

    • C. 

      3.11 x 10^24

    • D. 

      5.11 x 10^24

  • 6. 
    CAlculate the empirical formula of a compound composed of 52.9 % carbon and 47.1 % oxygen
    • A. 

      C02

    • B. 

      C402

    • C. 

      C202

    • D. 

      C302

  • 7. 
    If 2 L of solution contains 4.5 mol of solute, what is the molarity of the solution?
    • A. 

      2.50M

    • B. 

      2.75M

    • C. 

      2.25M

    • D. 

      2.00M

  • 8. 
    Calculate the mass of water required to prepare a 4.00 m aqueous solution of NH3 using 25.0g HN3.
    • A. 

      0.416 kg

    • B. 

      0.322 kg

    • C. 

      0.278 kg

    • D. 

      0.368 kg

  • 9. 
    The mole fraction of alcohol in water is 0.100 Calculate its molality.
    • A. 

      5.23 m

    • B. 

      6.17 m

    • C. 

      4.32 m

    • D. 

      3.90 m

  • 10. 
    Calculate the initial volume if a sample of gas at 75 C is changed to 1.50 L at 25 C at constant pressure.
    • A. 

      1.75 L

    • B. 

      1.95 L

    • C. 

      1.85 L

    • D. 

      1.65 L

  • 11. 
    Calculate the final volume if a 1.50 L sample of gass at 905 torr and 10 C is changed to 1.000 atm at 100 C
    • A. 

      1.25 L

    • B. 

      2.35 L

    • C. 

      1.75 L

    • D. 

      2.85 L

  • 12. 
    • A. 

      0.0516 mol

    • B. 

      0.516 mol

    • C. 

      0.00516 mol

    • D. 

      5.16 mol

  • 13. 
    Calculate the oxygen pressure in a mixture of 0.500 mol of oxygen and 0.750 mol of nitrogen with a total pressure of 40.0kPa
    • A. 

      15.0kPa

    • B. 

      16.0kPa

    • C. 

      15.5kPa

    • D. 

      16.5kPa

  • 14. 
    In a certain experiment, argon effuses from a porous cup at 4.00 mmol/minute. How fast would cholorine effuse under the same condition?
    • A. 

      3.00 mmol/min

    • B. 

      4.00 mmol/min

    • C. 

      3.50 mmol/min

    • D. 

      4.50 mmol/min

  • 15. 
    On a space station, a 10.0-L steel drum of oxygen gas at 25 C and 101.3kPa pressure spings a leak and 8.00g of gas escapes before the leak is plugged. What is the final pressure of the oxygen in the drum at 25 C?
    • A. 

      37.1 kPa

    • B. 

      36.8 kPa

    • C. 

      39.4 kPa

    • D. 

      38.2 kPa

  • 16. 
    What gas is likely to behave as an ideal gas when subjected to high temperature and low pressure?
    • A. 

      Krypton

    • B. 

      Hydrogen

    • C. 

      Oxygen

    • D. 

      Helium

  • 17. 
    Of the elements below, which one has the highest electronegativity value?
    • A. 

      Magnesium

    • B. 

      Phosphorus

    • C. 

      Carbon

    • D. 

      Iodine

  • 18. 
    The highest average translational kinetic energy occurs in which state of matter?
    • A. 

      Gas

    • B. 

      Solid

    • C. 

      Liquid

    • D. 

      Gas and liquid

  • 19. 
    How will you test an ammonia gas?
    • A. 

      Place a moist red litmus paper in the gas

    • B. 

      Pass the gas through limewater

    • C. 

      Place a moist blue litmus paper in the gas

    • D. 

      Insert a glowing splint into the gas

  • 20. 
    The oxidation number of a simple ion
    • A. 

      Is equivalent to its charge

    • B. 

      Is equal to zero

    • C. 

      Ranges from 0 to 1

    • D. 

      Ranges from -1 to 1

  • 21. 
    Which of the following is most basic?
    • A. 

      Ammonia

    • B. 

      Milk of magnesia

    • C. 

      Bleach

    • D. 

      Baking soda

  • 22. 
    Which of the following is most acidic?
    • A. 

      Boric acid

    • B. 

      Battery acid

    • C. 

      Orange juice

    • D. 

      Vinegar

  • 23. 
    Which salts are insoluble in water?
    • A. 

      Carbonate salt

    • B. 

      Sulphate salt

    • C. 

      Nitrate salt

    • D. 

      Ethanoate salts

  • 24. 
    Insoluble salts can be prepared by
    • A. 

      Filtration

    • B. 

      Distilation

    • C. 

      Precipitation

    • D. 

      Evaporation

  • 25. 
    Brass contains how many percent copper?
    • A. 

      80 %

    • B. 

      70 %

    • C. 

      75 %

    • D. 

      65 %

  • 26. 
    All metals below will not react with cold water except:
    • A. 

      Zinc

    • B. 

      Copper

    • C. 

      Calcium

    • D. 

      Iron

  • 27. 
    All metals below has no reaction with steam except
    • A. 

      Iron

    • B. 

      Lead

    • C. 

      Copper

    • D. 

      Silver

  • 28. 
    Which of the following metals reacts very slowly with dilute hydrochloric acid?
    • A. 

      Zinc

    • B. 

      Copper

    • C. 

      Silver

    • D. 

      Lead

  • 29. 
    What is the range of carbon content for medium steel?
    • A. 

      0.6 - 1.0 %

    • B. 

      0.2 - 0.6 %

    • C. 

      1.0 -1.5 %

    • D. 

      < 0.2 %

  • 30. 
    Which of the following is a property of high carbon steel?
    • A. 

      Malleable

    • B. 

      Brittle

    • C. 

      Ductile

    • D. 

      All of the choices

  • 31. 
    The atmosphere contains how many percent carbon dioxide?
    • A. 

      0.01

    • B. 

      0.08

    • C. 

      0.03

    • D. 

      0.05

  • 32. 
    WHich are pollutant traps heat to cause global warming or the "green house effect"?
    • A. 

      Methane

    • B. 

      Hydrocarbon

    • C. 

      Carbon monoxide

    • D. 

      Nitrogen oxide

  • 33. 
    A siren emits a sound which returns to the source in 4 s. how far away is the object which caused echo from the source? assume the temperature to be 30 C
    • A. 

      1,589 m

    • B. 

      1,472 m

    • C. 

      1,267 m

    • D. 

      1,328 m

  • 34. 
    Alkanes are saturated hyrocarbons that contain ________ carbon carbon covalent bonds
    • A. 

      2

    • B. 

      4

    • C. 

      1

    • D. 

      3

  • 35. 
    What is the color of bromine?
    • A. 

      Greenish-yellow

    • B. 

      Pale yellow

    • C. 

      Reddish brown

    • D. 

      Purplish black

  • 36. 
    All halogens have how many electrons in the out shell of the atom?
    • A. 

      5

    • B. 

      6

    • C. 

      7

    • D. 

      8

  • 37. 
    Which element in group 8 is used in the treatment of cancer?
    • A. 

      Radon

    • B. 

      Argon

    • C. 

      Xenon

    • D. 

      Krypton

  • 38. 
    The noble gases occupy 1% of the atmosphere of which _______ is argon.
    • A. 

      0.83

    • B. 

      0.88

    • C. 

      0.90

    • D. 

      0.93

  • 39. 
    Pewter is metal used for making souvenirs. How many percent of pewter is antimony?
    • A. 

      1

    • B. 

      3

    • C. 

      2

    • D. 

      4

  • 40. 
    Duralumin is an allow of aluminum, copper magnesium and manganese. How many percent of duralumin is manganese?
    • A. 

      2

    • B. 

      1

    • C. 

      3

    • D. 

      4

  • 41. 
    What is the color of solid magnesium oxide?
    • A. 

      Black

    • B. 

      Brown

    • C. 

      White

    • D. 

      Gray

  • 42. 
    Who was the first to isolate oxygen in its gaseous state?
    • A. 

      Lavoiser

    • B. 

      Priestley

    • C. 

      Hess

    • D. 

      Dalton

  • 43. 
    _____________ is a reaction in which a molecule adds to the two carbon atoms of a double bond.
    • A. 

      Addition Reaction

    • B. 

      Hydrogeneration reaction

    • C. 

      Chlorination reaction

    • D. 

      Bromination reaction

  • 44. 
    What refers to the reaction of halogens that take place at room temperature?
    • A. 

      Hydrogeneration

    • B. 

      Bromination

    • C. 

      Hydration

    • D. 

      Chlorination

  • 45. 
    The hardness of margarine formed is dependent on the amount of _________ added.
    • A. 

      Hydrogen

    • B. 

      Salt

    • C. 

      Milk

    • D. 

      Fat

  • 46. 
    The chalcogens are elements in what group in the periodic table?
    • A. 

      Group VA

    • B. 

      Group VIA

    • C. 

      Group VIIA

    • D. 

      Group IVA

  • 47. 
    What alkali metal is usually used for x-ray apparatus because of its ability to allow x-rays to pass through with minimum absorption?
    • A. 

      Magnesium

    • B. 

      Radium

    • C. 

      Beryllium

    • D. 

      Barium

  • 48. 
    Who coined the term plasma in 1928?
    • A. 

      William Crookes

    • B. 

      Irving Langmuir

    • C. 

      Albert Einstein

    • D. 

      Eric Cornell

  • 49. 
    Nonpolar Covalent bond occurs if the difference in electronegativity ranges from
    • A. 

      0.00 to 0.40

    • B. 

      0.50 to 1.90

    • C. 

      1.90 to 2.00

    • D. 

      2.00 and up

  • 50. 
    " The solubility of gas in a liquid is directly proportional to the partial pressure of the gas above the solution". This is known as:
    • A. 

      Hund's Law

    • B. 

      Pascal's Law

    • C. 

      Henry's Law

    • D. 

      Dalton's Law