Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
Efflorescence
Deliquescence
Effervescence
Fluorescence
Correct answer is A
No explanation has been provided for this answer.
Tetraoxosulphate (VI) acid burns the skin by
Hydrolysis
Hydration
Heating
Dehydration
Correct answer is D
No explanation has been provided for this answer.
A suspension
Saturated
Unsaturated
Supersaturated
Correct answer is C
At 20oC
0.34 mol/dm of the salt dissolve
= 0.34 * 101 = 34.34gm
Of the salt dissolved.
∴ 34.34gm dissolve is 1,000cm3
If only 250 cm3 is the required mass
X = (250/1000) * 34.34
= 8.555gm
If only 3.40gm of the salt dissolved ,the solution is unsaturated
The product of the electrolysis of dilute sodium hydroxide using platinum electrodes are
Hydrogen and oxygen gases
Water and hydrogen gas
Water and sodium metal
Sodium metal and oxygen gas
Correct answer is A
No explanation has been provided for this answer.
+1 to 0
0 to +2
+2 to +1
0 to +1
Correct answer is A
No explanation has been provided for this answer.