At room temperature the number of electrons and holes in an intrinsic semiconductor are equal (write Yes or No)

Write the number of electrons and neutrons in tritium ?

Write the quantum number of an electron present in 3p-orbital.

Write the quantum number of an electron present in 3d-orbital.

The magnetic field field produced at the centre of a circular coil carrying a current is 0.005T. Will the magnetic field change if both the number of turns and the current are doubled? (write yes or no)