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 no charge?

a. anion

b. electron

c. neutron

d. proton

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

a. oxygen

b. calcium

c. carbon

d. potassium

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3)

Empirical formula of hydrogen peroxide?

a. H2O

b. H2O2

c. HO2

d. HO

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

a. carbon

b. nitrogen

c. magnesium

d. sodium

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5) Molecular formula of sulfuric acid?

a. H3PO4

b. H₂ SO₄

c. HCl

d. HNO3

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6) Molecular formula of nitric acid?

a. H3PO4

b. HCl

c. HNO3

d. H₂ SO₄

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7) Which subatomic particle has negative charge?

a. electron

b. cation

c. proton

d. neutron

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8) Which subatomic particle has positive charge?

a. anion

b. neutron

c. proton

d. electron

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9) 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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10) Which chemical element belong to halogen group?

a. oxygen

b. potassium

c. iodine

d. carbon

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11) Which chemical element belong to halogen group?

a. iron

b. cobalt

c. fluorine

d. gold

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12) Empirical formula of hydrazine?

a. N2H2

b. N2H4

c. NH3

d. NH2

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

a. Number of electrons

b. Number of protons

c. Number of neutrons

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14) Molecular formula of phosphoric acid?

a. HCl

b. H₂ SO₄

c. H3PO4

d. HNO3

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15) 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. C2H4O2

c. C5H10O5

d. C6H12O6

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16) Which chemical element belong to halogen group?

a. carbon

b. bromine

c. nitrogen

d. oxygen

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17) Which chemical element belong to alkali metal group?

a. carbon

b. sodium

c. gold

d. cobalt

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18) Which chemical element belong to alkali metal group?

a. potassium

b. fluorine

c. calcium

d. magnesium

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19) Which chemical element belong to alkali metal group?

a. lithium

b. Chlorine

c. magnesium

d. iron

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20) Which chemical element belong to halogen group?

a. calcium

b. chlorine

c. lithium

d. magnesium

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