(^64) › STEP 4. Review the Knowledge You Need to Score High
- Which of the following elements is important
in the semiconductor industry to improve the
conductivity of germanium, Ge?
(A) K
(B) Ga
(C) Al
(D) Mg - Which of the following aqueous solutions is
blue?
(A) CuSO 4
(B) Cr 2 (SO 4 ) 3
(C) NiSO 4
(D) ZnSO 4 - To separate two substances by fractional crystal-
lization, the two substances must differ in which
of the following?
(A) solubility
(B) specific gravity
(C) vapor pressure
(D) viscosity - Bromine forms a series of acids like the series
formed by chlorine. Which of the following
series of bromine acids list the acids in order of
increasing amount of oxygen present?
(A) bromous acid, hypobromous acid, perbro-
mic acid, bromic acid
(B) bromous acid, bromic acid, hypobromous
acid, perbromic acid
(C) perbromic acid, bromic acid, bromous acid,
hypobromous acid
(D) hypobromous acid, bromous acid, bromic
acid, perbromic acid - What should you do if you spill sulfuric acid on
the countertop?
(A) Neutralize the acid with vinegar.
(B) Sprinkle solid NaOH on the spill.
(C) Neutralize the acid with NaHCO 3 solution.
(D) Neutralize the acid with an Epsom salt
(MgSO 4 ) solution.
23. Which of the following can be achieved by using
a visible-light spectrophotometer?
(A) running a flame test to determine if Na+ or
K+ is in a solution
(B) finding the concentration of a KMnO 4 solu-
tion
(C) detecting the presence of isolated double
bonds
(D) measuring the strength of a covalent bond
24. You have an aqueous solution of NaCl. The
simplest method for separating NaCl from the
solution is:
(A) evaporating the solution to dryness
(B) centrifuging the solution
(C) filtering the solution
(D) electrolyzing the solution
25. Which of the following anion/acid name pairs is
incorrect?
(A) fluoride/fluoric acid
(B) nitrate/nitric acid
(C) sulfite/sulfurous acid
(D) sulfide/hydrosulfurous acid
26. A book has a mass of 2.7 kg on the earth. The
same book weighs 6.0 pounds. The book is
transported to the moon, where the gravity is
1/6 that on the surface of the earth. The book
now weighs 1.0 pound. What is the mass of the
book on the moon?
(A) The mass will be 0.45 kg.
(B) The mass will be 16 kg.
(C) The mass will be the same as on the earth.
(D) There is no way to know what the mass is.