Chemistry Helium gas is filled in ballons because It is one of the constitutents of water It is a noble gas It is lighter than air Its atomic number is 2 It is one of the constitutents of water It is a noble gas It is lighter than air Its atomic number is 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry When Hydrogen starts burning in air, it produces ? Water Ammonia Methane Carbonic Acid Water Ammonia Methane Carbonic Acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant rare gas in the atmosphere is He Ne Ar Xe He Ne Ar Xe ANSWER DOWNLOAD EXAMIANS APP
Chemistry In which of the following states maximum iron ore is found ? Fe2O3 FeS2 FeCO3 Fe3O4 Fe2O3 FeS2 FeCO3 Fe3O4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Magnetite is 2Fe2O3. 3H2O FeCO3 Fe2O3 Fe3O4 2Fe2O3. 3H2O FeCO3 Fe2O3 Fe3O4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is 53 19 17 36 53 19 17 36 ANSWER DOWNLOAD EXAMIANS APP
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