Which of the following would have the same `O_(2)` content?

Which of the following solutions would have same pH ?

Which of the following compounds have higher enolic content than keto content

Which of the following compounds would have the same vapour pressure ?

Which of the following compounds would have the same vapour pressure ?

Which of the following species have the same bond order? (A) CN^(-) and CN^(+) (B) O_(2)^(-) and CN^(-) (C) NO^(+) and CN^(-) (D) CN^(-) and NO^(-)