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QUESTION NUMBER 10
An organic substance that changes color as ph changes is called —?
A. Agama Lizard
B. Titrated colors
C. Colorless gas
D. Indicator
ANSWER: D
QUESTION NUMBER 11
Standard solution is defined as ——
A. is not used for titration but used in other chemical combinations.
B. A solution of known concentration used for titration and other analytical methods.
C. Those solutions that can be used both in physics and biology practical’s.
D. They did not teach us this one oh.
ANSWER: B
QUESTION NUMBER 12
The appropriate apparatus that could be used to transfer a solid in to a testube is ——-
A. Stick
B. Gas holder
C. Stainless tube
D. Spatula
ANSWER: D
QUESTION NUMBER 13
a molar solution is one which contains the molar mass of a compound in —-dm³ of the solution
A. 4 dm³ of the solution.
B. 3 dm³ of the solution.
C. 1 dm³ of the solution.
D. 2 dm³ of the solution.
ANSWER: C
QUESTION NUMBER 14
The strength of an acid is reduced by —–
A. Dilution.
B. Gas
C. Water
D. Air
ANSWER: A
QUESTION NUMBER 15
the process of determining the exact concentration of a solution is called?
A. Total Moles
B. Total Mass
C. Solute
D. Titration
ANSWER: D
QUESTION NUMBER 16
the techniques of accurately measuring the volume of a solution requires to react with another reagent is ——–
A. Indicator
B. Acid
C. Titration
D. Water
ANSWER: C
QUESTION NUMBER 17
what will be observed when a sample of Fe(2) sulphide is warmed with excess HCL?
A. Hydrogen sulfide gas (H2S) is evolved.
B. Hydrogen sulfide gas (H2S) is omitted.
C. Hydrogen sulfide gas (H2S) is needed.
D. Hydrogen sulfide gas (H2S) is important.
ANSWER: A
QUESTION NUMBER 18
Atomic mass of Na + atomic mass of O + atomic mass of H = ?
A. 25.7 g/mol.
B. 40 g/mol.
C. 20 g/mol.
D. 50 g/mol.
ANSWER: B
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