Test Preparation on p-block Elements - II Chemistry Test Series For NEET-2020
1.
Percentage of lead in lead pencil is
2.
Lead pipes are corroded quickly by (a) Dil. H2SO4 (b) Conc. H2SO4 (c) Acetic acid (d) Water
3.
Which has the lowest boiling point (a) NH3 (b) PH3 (c) AsH3 (d) SbH3
4.
Which of the following elements does not form stable diatomic molecules
5.
Each of the following is true for white and red phosphorus except that they (a) Are both soluble in CS2 (b) Can be oxidized by heating in air (c) Consists of same kind of atoms (d) Can be converted into one another
