Graphite is a good conductor of electricity due to the presence of ….
a. Lone pair of electrons
b. Free valence electrons
c. Cations
d. Anions
Ans. b
Explanation : Graphite is a good conductor of electricity due to presence of free valence electrons in graphite each carbon is sp ^ 2 hybridished having one free electrons which makes graphite a good conductor of electricity.
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dm-3 sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1 ; 1 dm-3 = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)
