Which value of l will represent double dumb-bell shape of the orbital?

Which of the subshell has double dumb-bell shape ?

The m value not possible for a double dumbell shaped orbital is

Which of the following orbitals have a dumb bell shape?

Which of the following orbitals have a dumb bell shape?

Which type of plants show guard cells that are dumb-bell shaped?

l = 1 is given . What is the shape of the orbital ? Why ?

Which represents and orbital ?

Which of the following sets of quantum numbers represents the orbitals of same shape and orientation in external field.