List of top Chemistry Questions on p -Block Elements asked in BCECE

How many moles of O2 will be formed from the decomposition of Pb(NO3)2?
Which of these sulfides is not black?
Which one of these is the most acidic oxide?
Red lead is:
Which one is an amphoteric oxide:
Ozone is used for purifying water because
Zinc and cold dil. $ HNO_3$ reacts to produce
Tincture of iodine is