Which of the following solids is not an electrical conductor
Mg (s) 2. TiO (s) 3. I 2 4. H 2 O (s)
a. only 1
b. only 2
c. 3 and 4
d. 2, 3 and 4
Ans.c
Explanation :Iodine is a non polar molecular solid in which iodine molecules are held together by London force or despersion force this is soft and non 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)
