Test Of English For Higher Degree Admissions Sample Questions With Answer Key - University Of Ibadan, Abel Olorunnisola, 2013 Page 28
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34Passage 2
Chemical Substance
Chemical substances (also called pure …..131…..) may well be
defined as "any material with a definite chemical composition".
According to this definition, a chemical substance can either be a
pure chemical element or a pure chemical …..132….. But, there are
exceptions to this definition; a pure substance can also be defined as
a form of ….133….that has both definite composition and distinct
properties. The chemical substance index published by CAS also
includes several alloys of uncertain composition. Non-……134……
compounds are a special case (in inorganic chemistry) that
…..135…… the law of constant composition, and for them, it is
sometimes difficult to draw the line between a mixture and a
compound, as in the case of palladium hydride.
131. A. materials B. substances C. elements D. purifiers
132. A. compound B. sulphur C. material D. combined compound
133. A. life B. matter C. content D. chemical
134. A. Combined B. stoichiometric C. physical D. chemical
135. A. disobeys B. violates C. flouts D. disregards
Instruction 2:
In each of the questions below, choose the option that is opposite in
meaning to the word(s) or phrase in bold face:
136. Ossified is nearly opposite in meaning to….
a. Durable
b. Dainty
c. Flexible
d. Contumacious
e. Pragmatic
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