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 chemical element belong to alkali earth metal group?

a. carbon

b. sodium

c. magnesium

d. nitrogen

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2) 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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3) Empirical formula of hydrazine?

a. NH2

b. NH3

c. N2H4

d. N2H2

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4) Which subatomic particle has negative charge?

a. proton

b. electron

c. neutron

d. cation

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5) Which chemical element belong to halogen group?

a. carbon

b. iodine

c. oxygen

d. potassium

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6) Empirical formula of hydrogen peroxide?

a. H2O2

b. H2O

c. HO

d. HO2

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7) Molecular formula of nitric acid?

a. HNO3

b. H3PO4

c. H₂ SO₄

d. HCl

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8) Which chemical element belong to alkali metal group?

a. magnesium

b. calcium

c. potassium

d. fluorine

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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 neutrons

c. Elements that have the same number of electrons

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

a. calcium

b. carbon

c. oxygen

d. potassium

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11) Which chemical element belong to halogen group?

a. fluorine

b. cobalt

c. iron

d. gold

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12) 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. C2H4O2

b. CH2O

c. C6H12O6

d. C5H10O5

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13) Molecular formula of sulfuric acid?

a. H₂ SO₄

b. H3PO4

c. HNO3

d. HCl

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14) Molecular formula of phosphoric acid?

a. H3PO4

b. HNO3

c. HCl

d. H₂ SO₄

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15) Which subatomic particle has positive charge?

a. anion

b. proton

c. electron

d. neutron

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16) Which chemical element belong to alkali metal group?

a. Chlorine

b. lithium

c. magnesium

d. iron

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17) Which chemical element belong to halogen group?

a. bromine

b. nitrogen

c. oxygen

d. carbon

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18) Which chemical element belong to halogen group?

a. calcium

b. magnesium

c. chlorine

d. lithium

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19) Which chemical element belong to alkali metal group?

a. sodium

b. carbon

c. cobalt

d. gold

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20) Which subatomic particle has no charge?

a. proton

b. electron

c. anion

d. neutron

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