Iron exhibits bcc structure at room temperature. Above
900º C It transforms to fcc structure. the ratio of density of iron at room temperature to that at 900 º C (assuming molar mass and atomic radii of iron remains constant with temperature ) is
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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)
