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Acetic acid is a weak electrolyte because in an aqueous solution acetic acid is (a) non-conductor of electricity (b) completely dissociated (c)…
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(c) Sodium fluoride Explanation: Sodium fluoride (NaF) is an ionic compound, meaning it exists as a lattice of ions rather than discrete…
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For which of the following ionic compounds no ion has octet? (a) LiH (b) CaO (c) NaCl (d) MgCl2
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The order of oxidising properties of Cl (17), I(53), F(9), Br(35) belonging to group 17 of long periodic table is (a) F…
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Number of groups in the long periodic table is (a) 9 (b) 13 (c) 18 (d) 19
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If 12 C of charge flows through a conductor for 2 minutes, the electric current is (a) 6 amperes (b) 0.1 amperes…
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If the resistance (R) of the conductor and time of flow of current in the conductor (t) remain unchanged, the relation between…
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The charge of an electron is (a) -3.2 × 10-19C (b) -1.6 × 10-19C (c) 6 × 10-19 C (d) 3.2 ×…
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Dentists use (a) convex mirror (b) convex lens (c) concave mirror (d) concave lens
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The wavelength of which of the following is greater than that of visible light? (a) x-ray (b) infrared ray (c) γ –…
