IGCSE O Level Chemistry Certification Exam Tests
IGCSE O Level Chemistry Practice Test 153
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To balance Al(OH)3 + HNO3 → Al(NO3)3 + H2O, number of HNO3 molecules required will be
Sodium (Na) is not
Milk has a pH of
Potassium Hydroxide (KOH), Sodium Hydroxide (NaOH) and Copper Sulfate (CuSO4) solutions are
Biological catalyst to convert Hydrogen Peroxide (H2O2) into water (H2O) and oxygen (O2) is
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