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Q.1 Which is independent of temperature ? (A) Molarity (B) Formality (C) Normality (D) Morality Show Answer Answer - Molarity Q.2 The molality of pure water is ____ (A) 18 (B) 55.5 (C) 60.5 (D) 16 Show Answer Answer - 55.5 Q.3 Molarity of 900 of water is ____ (A) 50 M (B) 55.5 M (C) 5 M (D) 200 M Show Answer Answer - 55.5 M Q.4 The atmospheric pollution is generally measured in the units of ____ (A) Mass percentage (B) Volume percentage (C) Volume fraction (D) PPM Show Answer Answer - PPM Q.5 234.2 gm of sugar syrup contains 34.2 gm of sugar. What is the molal concentration of the solution. (A) 0.1 (B) 0.5 (C) 5.5 (D) 55 Show Answer Answer - 0.5 Q.6 Atomic mass is equal to ___ (A) Number of electrons of an atom (B)Sum of the numbers of electrons and protons of an atom (C) Numbers of neutrons and protons...

Q.1 - Percentage of empty space in body centered cubic arrangement is _______. 74% 68% 32% 26% Show Answer (C) Percentage of empty space in body centered cubic arrangement is 32%. Note - Packing efficiency for bcc arrangement is 68% which represents total filled space in the unit cell. Hence, empty space in a body centered arrangement is 100 – 68 = 32%.