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QUESTION NUMBER 15
A solution that resists changes in PH when a small amount of acid or base is added is known as….?
A. Indicator
B. Strong acid
C. Strong base
D. Buffer
ANSWER: D
QUESTION NUMBER 16
An instrument that can connect two half-cells to prevent direct mixing of the solutions but allows migration of ions through it is called?
A. Voltmeter
B. Salt Bridge
C. Potentiometer
D. Wire
ANSWER: B
QUESTION NUMBER 17
Across the period, —– decreases?
A. Atomic Radius
B. Screening Effect
C. Ionization Energy
D. Electronegativity
ANSWER: C
QUESTION NUMBER 18
What is the number of moles of copper formed when a current of 0.5A is passed through a copper sulphate for 35 minutes?
A. 1.8 X 10^-8mol
B. 5.44 x 10^-3mol
C. 5.64 x 10^-3 mol
D. 1.09 x 10^-3mol
ANSWER: C
QUESTION NUMBER 19
in acid base titration, the point at which the number of masses of hydrogen ion in an acid is equal the number of moles of hydroxide ion in the base is called….?
A. Standard Point
B. Equivalent Point
C. Titre Value
D. Equilibrium point
ANSWER: B
QUESTION NUMBER 20
Half the distance between the nucleus of two covalent bonded atoms is regarded as?
A. Atomic Number
B. Atomic Size
C. Atomic radius
D. Ionization Radius
ANSWER: C
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