IGCSE A Level Chemistry Practice Test 13

Buffer Solutions Quiz Questions and Answers PDF - 13

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Buffer Solutions Questions and Answers PDF Download: Quiz 13

MCQ 61: The buffers present in the blood contain

HCO₃^-
hemoglobin
H₂PO₄^-
all of above

MCQ 62: Enzymes are large molecules, generally made up of

carbohydrates (C_xH_2nO_n)
proteins
vitamins
lipids

MCQ 63: The atomic number is the number of

protons (p⁺)
electrons (e^-)
neutrons (n⁰)
nucleons (p⁺ and n⁰)

MCQ 64: The electronegativity of Oxygen is

2.55
2.2
3.44
3.04

MCQ 65: The number of bonding pairs of electrons in water H₂O is

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