name at least 15 chemicals in liquid form which could be find easily in the market?

not harmful... hmmm...
vinegar- acetic acid
saline solution- sodium chloride
white glue- polyvinyl acetate
corn syrup- glucose
molasses- sucrose
lemon juice- citric acid
bleach- sodium hypochlorite- harmful
water- water H2O
vanilla extract- vanillin- 4-hydroxy-3-methoxybenzaldehyde
rubbing alcohol- isopropyl alcohol- may be harmful if misused
methanol (hardware store)- methyl alcohol- may be harmful is misused
peroxide- hydrogen peroxide- may be harmful is misused
shellac thinner or denatured alcohol- ethanol, ethyl alcohol, not suitable for drinking, may be harmful if misused