Chimie Générale Preparation (Dr. Chhour Monivan, PhD) – testnisset.com

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Chimie Générale Preparation (Dr. Chhour Monivan, PhD)

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1) Molecular formula of phosphoric acid?

a. H3PO4

b. HCl

c. H₂ SO₄

d. HNO3

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2) Which chemical element belong to halogen group?

a. carbon

b. oxygen

c. nitrogen

d. bromine

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3) Which subatomic particle has positive charge?

a. anion

b. proton

c. neutron

d. electron

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4) Which chemical element belong to alkali earth metal group?

a. magnesium

b. carbon

c. sodium

d. nitrogen

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5) Which chemical element belong to alkali metal group?

a. magnesium

b. potassium

c. fluorine

d. calcium

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6) Which chemical element belong to alkali metal group?

a. magnesium

b. iron

c. lithium

d. Chlorine

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7) Empirical formula of hydrogen peroxide?

a. H2O

b. H2O2

c. HO

d. HO2

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8) What are isotopes?

a. Elements that have the same number of protons

b. Elements that have the same number of electrons

c. Elements that have the same number of neutrons

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9) Which chemical element belong to halogen group?

a. iodine

b. carbon

c. oxygen

d. potassium

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10) Glucose (C6H12O6), ribose (C5H10O5), Acetic acid (C2H4O2), and formaldehyde (CH2O) all have different molecular formulas but the same empirical formula. Write their empirical formula.?

a. CH2O

b. C5H10O5

c. C6H12O6

d. C2H4O2

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11) Which subatomic particle has negative charge?

a. proton

b. neutron

c. cation

d. electron

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12) Which chemical element belong to alkali earth metal group?

a. carbon

b. potassium

c. calcium

d. oxygen

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13) Molecular formula of sulfuric acid?

a. HCl

b. HNO3

c. H₂ SO₄

d. H3PO4

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14) Which chemical element belong to alkali metal group?

a. carbon

b. gold

c. sodium

d. cobalt

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15) In the Periodic Table, elements are assigned with atomic number based on?

a. Number of protons

b. Number of electrons

c. Number of neutrons

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16) Which subatomic particle has no charge?

a. proton

b. anion

c. neutron

d. electron

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17) Which chemical element belong to halogen group?

a. fluorine

b. iron

c. gold

d. cobalt

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18) Empirical formula of hydrazine?

a. NH3

b. N2H2

c. N2H4

d. NH2

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19) Molecular formula of nitric acid?

a. HCl

b. H3PO4

c. HNO3

d. H₂ SO₄

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20) Which chemical element belong to halogen group?

a. chlorine

b. lithium

c. magnesium

d. calcium

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