Hey, as you may know the Ebonyi State University(Ebsu) year one exam is CBT BASED which means it will be written with computer, and today we will be drop only 11 Past Questions here to practice more use our STUDENTSDASH Practice code to Practice more on STUDENTSDASH APP.
ICH 191 PAST QUESTION PG 1
QUESTION NUMBER 1
The following salts are soluble in water except?
A. NH4NO2
B. (CH3COO)2Pb
C. AgCl
D. NaCl
ANSWER: C
QUESTION NUMBER 2
Which of the following gas turns red litimus paper blue
A. NH3(g)
B. CO(g)
C. CL2(g)
D. H2(g)
ANSWER: A
QUESTION NUMBER 3
Anions are —–
A. Postively charged
B. Metalic radicals
C. Red
D. Yellow
ANSWER: B
QUESTION NUMBER 4
Phenolpthalein is always ——
A. Pink
B. Colourless
C. Red
D. Yellow
ANSWER: B
QUESTION NUMBER 5
Which of the following salts forms acidic solutions of hydrolysis
A. Na2CO3
B. HCOONa
C. Na2S
D. Nh4Cl
ANSWER: D
QUESTION NUMBER 6
In comfirmaentry test for acid radicals mineral acid is added to ——
A. Make the medium more acdic
B. Remove Metalic Radicals
C. Chnage the PH of the test reagent
D. Remove the interfering ions if present
ANSWER: A
QUESTION NUMBER 7
the solubility of hydroxie depends on —
A. PH
B. Solvent
C. Solution
D. Apparatus
ANSWER: A
QUESTION NUMBER 8
Which of these ions gives a dark or deep blue precipitate with potassium hexacyanoferate (2) ions?
A. CU2+
B. Fe3+
C. Fe2+
D. Pb2+
ANSWER: A
QUESTION NUMBER 9
The Mole ratio of a titration reaction involving Sodium Hydroxide and sulphric acid is ———
A. 1:1
B. 1:2
C. 2:1
D. 2:3
ANSWER: A
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
QUESTION NUMBER 19
What is observed when phenolphthalein is added to sodium hydroxide solution?
A. Red
B. Yellow
C. Pink
D. Blue
ANSWER: C
QUESTION NUMBER 20
Potassium Permanganate is a power —– agent?
A. Indicating
B. Oxidizing
C. Hydroxide
D. Reducing
ANSWER: B
QUESTION NUMBER 21
what is the molar mass of Na2CO3.10H2O?
A. Approximately 286 g/mol.
B. Approximately 386 g/mol
C. Approximately 486 g/mol
D. Approximately 586 g/mol
ANSWER: A
QUESTION NUMBER 22
The reaction of an acid to a base is called ——?
A. Neutralization
B. Circulation
C. Titration
D. Indication
ANSWER: A
QUESTION NUMBER 23
Na2CO3 is a base because it ionize in a solution to give ——?
A. Nitrate Ions
B. Potassium Manganate
C. Oxygen Ions
D. Carbonate ions (CO3^2-).
ANSWER: D
QUESTION NUMBER 24
The unit of measurement for molar mass in the IUPAC in convention table is —-?
A. m/mol (mole per mole)
B. g/gram (grams per gram
C. g/mol (grams per mole).
D. m/gram (moles per gram)
ANSWER: C
QUESTION NUMBER 25
all standard solution are molar solution ?
A. True
B. False
C. Maybe
D. I dont know
ANSWER: B
QUESTION NUMBER 26
Fe(2) does not give any reaction with potassium Thiocyanate solution?
A. False
B. True
C. I dont know
D. Lets ask emmy
ANSWER: B
QUESTION NUMBER 27
An ionic compound which when in molten of aqueous solution, conducts electricity and is decomposed to form a constituent element is called ….?
A. Electrode
B. Electrolyte
C. Electrochemical Cell
D. Electrolysis
ANSWER: B
QUESTION NUMBER 28
calculate the amount of 0.1m/dm3 of Sodium trioxocarbonate(iv) in 25.00cm3of solution?
A. 0.0023 moles of NaCO3
B. 0.0025 moles of Na2CO3
C. 0.0021 moles of Na2CO3
D. 0.0022 moles of Na2C03
ANSWER: B
QUESTION NUMBER 29
The type of bound in HCL is …..?
A. Pure Covalent
B. Porlar Covalent
C. Dalive
D. Ionic
ANSWER: B
QUESTION NUMBER 30
The change in color of indicator during titration helps to determine —?
A. Starting point of titration
B. Middle point of titration
C. Endpoint of the titration.
D. Unknown point in titration
ANSWER: C