When a salt loses its water of crystallization to the atmosphere on exposure; the process is said to be?
A. Efflorescence B. Deliquescence C. Effervescence D. Fluorescence Correct Answer: Option A – Efflorescence
Tetraoxosulphate (VI) acid burns the skin by?
A. Hydrolysis B. Hydration C. Heating D. Dehydration Correct Answer: Option D – Dehydration
The product of the electrolysis of dilute sodium hydroxide using platinum electrodes are?
A. Hydrogen and oxygen gases B. Water and hydrogen gas C. Water and sodium metal D. Sodium metal and oxygen gas Correct Answer: Option A – Hydrogen and oxygen gases
What is the change in the oxidation number of copper in the reaction below?
CU2S(s) + O2(g) → 2CU(s) + SO2(g) A. +1 to 0 B. 0 to +2 C. +2 to +1 D. 0 to +1 Correct Answer: Option A = +1 to 0Products
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