Which gas gives the characteristic odor to smelling salts and some household cleaners?
a. Ammonia
b. Carbon dioxide
c. Chlorine
d. Ozone
[Ques. 2] Rhombohedral cleavage is displayed by the mineral named
a. quartz.
b. fluorite.
c. calcite.
d. hematite.
[Ques. 3] Which compound is the major component of table salt?
a. HC2H3O2
b. NH4Cl
c. MgCO3
d. NaCl
[Ques. 4] The term hardness refers to the ability of a mineral to
a. resist scratching.
b. break along definite smooth planes.
c. break into equal-sized halves.
d. scratch other minerals.
[Ques. 5] Compounds formed when the atoms involved share electrons are
a. electrovalent.
b. covalent.
c. ionic.
d. organic.
[Ques. 6] The term cleavage refers to the tendency of some minerals to
a. resist scratching.
b. break along definite smooth planes.
c. break into equal-sized halves.
d. scratch other minerals.
[Ques. 7] In the HCl molecule, the bonding electrons spend
a. equal time around both atoms.
b. all their time around only one of the atoms.
c. more time around the H atom.
d. more time around the Cl atom.
[Ques. 8] Which of the following is not generally used in mineral identification?
a. Size
b. Cleavage
c. Specific gravity
d. Color
[Ques. 9] Compound A is a liquid and compound B is a solid. Which statement is justified?
a. Compound A is covalent; compound B is ionic.
b. Compound A is ionic; compound B is covalent.
c. Compound A could be ionic or covalent; compound B is ionic.
d. Compound A is covalent; compound B could be ionic or covalent.
[Ques. 10] If iron floats in liquid mercury, then the specific gravity of iron is
a. less than that of mercury.
b. greater than that of mercury.
c. about equal to that of mercury.
d. in no way related to that of mercury.
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