Which of the following mutational events is most difficult to detect?

Which of the following mutations is not hereditary

Which of the following metal is the most difficult to extract from its oxide?

Which of the following metal is the most difficult to extract from its oxide?

Which of the following hydrogen halides is the most difficult to add to the double bond of alkenes ?

For which of the following particles will it be most difficult to experimentally verify the de Broglie relationship ?

In which of the following cases shown Fig. it is most difficult to rotate the rod ? Explain why ?

Which of the following hydrocarbon is most difficult to prepare by Wurtz's reaction?

Which is most difficult to oxidise ?