1) When one atom forms cation by losing an electron and other forms anion by accepting that electron then bond form between them is a. Covalent bond b. Ionic bond c. coordinate covalent bond d. single covalent bond
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2) Nobel gases are stable because they contain a. 7 electrons in valence shell b. 8 electrons in valence shell c. 5 electrons in valence shell d. 4 electrons in valence shell
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3) Bonds which involve 3 shared electron pairs are a. double covalent bond b. single covalent bond c. triple covalent bond d. coordinate covalent bond
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4) To form anion, the non-metal atom a. looses electrons b. gains electron c. losses protons d. gain protons
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5) When two identical atoms share electron pairs and exert force on each other then the bond form is a. non-polar covalent bond b. polar covalent bond c. double covalent bond d. coordinate covalent bond
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6) Synthetic resins are used in places where a. air resistance is required b. water resistance is required c. friction is required d. adhesion is required
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7) Oxygen belongs to group VIA so the number of electrons in its valence shell is a. 6 b. 7 c. 8 d. 4
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8) Electron pairs which are not shared by atoms are called a. electron pairs b. lone pairs c. proton pairs d. shell pairs
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9) The strength of intermolecular forces from the ionic or covalent bond is a. weaker b. stronger c. equal d. none of above
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10) Ionic crystals have a. low melting points b. moderate melting points c. high melting points d. none of above
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11) Helium is chemically a. active b. inert c. unstable d. none of above
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12) The bond formed by mutual sharing of the electron is a. ionic bond b. coordinate covalent bond c. covalent bond d. none of above
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13) When atoms lose or gain electrons they acquire configuration of a. next noble gas b. halogens c. alkali metals d. alkaline metals
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14) The covalent compound among the following is a. NaCl b. MgO c. H2O d. KF
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15) The melting point of table salt is a. 800 °C b. 801 °C c. 901 °C d. 1000 °C
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