Which one of the following is HYPOBROMITE ?
A: BrO 3-1
B: Bro2-1
C: Bro-1

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone

Which of the following units is not an official si unit

Which metals are called noble metals