The most densest substance on the Earth is __________.
A. Platinum
B. Copper
C. Steel
D. Osmium » Read More…
A. Platinum
B. Copper
C. Steel
D. Osmium » Read More…
A. concave
B. Convex
C. diverging
D. none of these » Read More…
A. shorter
B. shortest
C. longer
D. longest
A. 1 g/cm3
B. 1.5 g/cm3
C. 2 g/cm3
D. none of these » Read More…
A. Kelvin
B. Thomson
C. Rutherford
D. Henri Becquerel » Read More…