Related MCQs

• Q. The atom of an element has electronic con-figuration 2, 8, 7. To which of the following elements wou
• Q. The atomic number of an element X is 19. The number of electrons in its ion X⁺ will be:
• Q. Which of these is not an organic acid?
• Q. To protect tooth decay, one is advised to brush the teeth regulary. The ingredient of the paste whic
• Q. Fill in the blank: A sulphide ore is concentrated by …………….
• Q. An element has 12 protons. The group and period to which this element belongs to is
• Q. The category of compounds with -COOH as functional groups.
• Q. Fill in the blank: Removal of impurities from a metal by chemical method is called …………â€
• Q. The element which has least tendency to lose electron is
• Q. The metal which can be extracted from the bauxite ore is: