FUTA Chemistry 2011/2012 Past Questions

Practice each question, then open it to see the full details.

Mg_(s)+ 2HCl_(aq) ⟶ MgCl_2(aq)+ H_2(g) From the equation above, what mass of hydrogen would be produced if 12.0g of magnesium reacted completely with dilute hydrochloric acid?(H = 1, Mg = 24)

A.1.0g
B.2.0g
C.6.0g
D.12.0g

Alkanols have unexpectedly high boiling points relative to their molar masses because of intermolecular

A.hydrogen bonding
B.metallic bonding
C.covalent bonding
D.ionic bonding

lf an element X with electronic configuration 2,8,3, combines with another element Z with electronic configuration 2,8,6, the compound formed will have the formula

A.XZ
B.XZ₂
C.X₂Z
D.X₂Z₃

Which of the following is linear in shape?

A.CH₄
B.H₂O
C.H₂S
D.CI₂

What is the percentage by mass of copper in copper (I) oxide (Cu₂O)? [0 = 16; Cu = 64]

A.88.9%
B.80.0%
C.66.7%
D.20.0%

The most suitable method for preparing lead (II) chloride is by

A.action of dilute HCI on PbSO₄
B.action of dilute HCl on lead
C.mixing aqueous solutions of Pb (NO₃)₂ and NaCI
D.bubbling chlorine into a solution of Pb(NO₃)₂

Sodium chloride cannot conduct electricity in the solid state because it

A.is a normal salt
B.is highly soluble in water
C.is an electrovalent compound
D.does not contain mobile ions

Alums are classified as:

A.simple salts
B.acid salts
C.anhydrous salts
D.double salts

H₃O⁺_(aq) + OH^-_(aq) ⟶ 2H₂O The heat change accompanying the process represented by this equation is the heat of:

A.Neutralization
B.Formation
C.solution
D.dilution

In which ofthe following processes are larger molecules broken down into smaller molecules?

A.Vulcanization of rubber
B.Hydrogenation of palm oil
C.Hydrolysis of starch
D.Polymerization