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) Which subatomic particle has negative charge?

a. electron

b. cation

c. proton

d. neutron

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2) Molecular formula of nitric acid?

a. H₂ SO₄

b. HCl

c. HNO3

d. H3PO4

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3) Molecular formula of phosphoric acid?

a. H₂ SO₄

b. HNO3

c. HCl

d. H3PO4

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4) Which chemical element belong to halogen group?

a. potassium

b. iodine

c. carbon

d. oxygen

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5) What are isotopes?

a. Elements that have the same number of neutrons

b. Elements that have the same number of protons

c. Elements that have the same number of electrons

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

a. Number of neutrons

b. Number of electrons

c. Number of protons

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7) Which subatomic particle has positive charge?

a. neutron

b. proton

c. anion

d. electron

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

a. carbon

b. magnesium

c. sodium

d. nitrogen

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9) Empirical formula of hydrazine?

a. NH2

b. N2H2

c. N2H4

d. NH3

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10) Empirical formula of hydrogen peroxide?

a. H2O

b. HO2

c. HO

d. H2O2

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11) Which chemical element belong to alkali metal group?

a. Chlorine

b. magnesium

c. lithium

d. iron

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12) Which chemical element belong to alkali metal group?

a. gold

b. sodium

c. carbon

d. cobalt

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13) Molecular formula of sulfuric acid?

a. H₂ SO₄

b. HCl

c. H3PO4

d. HNO3

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14) Which chemical element belong to halogen group?

a. gold

b. fluorine

c. iron

d. cobalt

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

a. potassium

b. carbon

c. calcium

d. oxygen

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16) Which subatomic particle has no charge?

a. neutron

b. proton

c. anion

d. electron

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17) Which chemical element belong to halogen group?

a. nitrogen

b. carbon

c. bromine

d. oxygen

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18) 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. C5H10O5

b. CH2O

c. C2H4O2

d. C6H12O6

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19) Which chemical element belong to alkali metal group?

a. magnesium

b. calcium

c. potassium

d. fluorine

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20) Which chemical element belong to halogen group?

a. lithium

b. magnesium

c. calcium

d. chlorine

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