IGCSE O Level Chemistry Practice Test 92

Percent Composition of Elements Multiple Choice Questions (MCQs) PDF Download - 92

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The MCQ: In Calcium Chloride, the percentage composition of Calcium is; "Percent Composition of Elements" App (Free Android & iOS) with answers: 0.3722, 0.4621, 0.36112, and 0.4621 for GRE test prep classes. Practice Chemical Formulae and Equations Questions and Answers, Apple e-Book to download free sample for best accredited online colleges.

Percent Composition of Elements MCQ Quiz with Answers PDF Download: Test 92

MCQ: 456

In Calcium Chloride, the percentage composition of Calcium is

0.4621
0.3722
0.4621
0.36112

MCQ: 457

Products of reaction CuO + HNO₃ → are

Cu₂NO₃ + H₂O
Cu(NO₃)₂ + H₂O
Cu(NO₃)₂ + H₂
Cu(NO₂)₄ + H₂

MCQ: 458

Extra stability is gained in the third shell if the number of electrons is

MCQ: 459

Many catalysts are

noble gases
transition metals
non-metals
inert gases

MCQ: 460

Consider the equation ZnO + NaOH + H₂O → Na₂Zn(OH)₄. Moles of H₂O required to balance the equation would be

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