IGCSE O Level Chemistry Certification MCQs – Mock Test 39

Relative Molecular Mass Notes Questions with Answers PDF – Download Test 39

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Download the "Relative Molecular Mass Notes" App (Android & iOS): Greatest proportion by mass of nitrogen is in; MCQ with answers: ammonium nitrate (nh₄no₃), hydrazine (n₂h₄),, urea (nh₂conh₂), and ammonium sulphate (nh₄)₂so₄. Learn Chemical Formulae and Equations Questions and Answers, Apple Book to download free chapter to maximize chemistry digital quality.

Relative Molecular Mass Notes Q&A PDF Download – Mock Test 39

MCQ 191: The greatest proportion by mass of nitrogen is in:

Hydrazine (N₂H₄),
ammonium nitrate (NH₄NO₃)
ammonium sulphate (NH₄)₂SO₄
urea (NH₂CONH₂)

MCQ 192: The optimal temperature for enzymes is:

room temperature
35-37 °C
40-45 °C
above 45 °C

MCQ 193: Anodic oxidation refers to the:

loss of electrons at the anode
gain of electrons at the cathode
loss of electrons at the cathode
gain of electrons at the anode

MCQ 194: Seawater has a pH of:

MCQ 195: Approximate volume can be measured through:

volumetric flask
burette
measuring cylinder
beaker

Relative Molecular Mass Notes App & eBook – IGCSE O Level Chemistry Certification Guide

Properties: Bases and Reactions MCQs

Dissolving, Filtering and Evaporating MCQs

Ionic and Covalent Substances MCQs

Change of State MCQs

Methods of Purification: Sublimation MCQs

Strong and Weak Acids MCQs

Reactants MCQs

Acidity or Alkalinity MCQs

Chemical and Ionic Equations MCQs

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