IIT-JEE Exam

The compound(s) formed upon combustion of sodium metal in excess air is(are)
(A) Na2O2 (B) Na2O
(C) NaO2 (D) NaOH

Read Solution (Total 2)

it should be option (A)
Because NaO2 & Na2O is not possible because Na makes peroxide it doesn't make mono & super oxide so both of the option (B) (C) will wrong
NaOH is not at all combustion.
11 years agoHelpfull: Yes(0) No(0)

the answer should be A) because the formation of na20 if formed when there is limited supply of air.
5 years agoHelpfull: Yes(0) No(0)

IIT-JEE Other Question

The term that corrects for the attractive forces present in a real gas in the van der Waals equation is The correct statement(s) about the compound H3C(HO)HC−CH=CH−CH(OH)CH3 (X) is(are)
(A) The total number of stereoisomers possible for X is 6
(B) The total number of diastereomers possible for X is 3
(C) If the stereochemistry about the double bond in X is trans, the number of enantiomers possible for
X is 4
(D) If the stereochemistry about the double bond in X is cis, the number of enantiomers possible for X is 2