Description : 10% oleum comprises of 10% free (A) SO2 (B) H2SO3 (C) SO3 (D) H2SO4
Last Answer : (C) SO3
Description : More than 100 percent of __________ is present in oleum. (A) SO3 (B) H2SO4 (C) H2SO3 (D) SO2
Last Answer : (B) H2SO4
Description : Chemical formula of oleum is (A) H2SO3 (B) H2SO4 (C) H2S2O7 (D) H2SO7
Last Answer : (C) H2S2O7
Description : . Glass reacts with (A) H2SO3 (B) HF (C) HNO3 (D) K2Cr2O7
Last Answer : (B) HF