The number of circles that touch all the three lines $x+y-1=0$,$x-y-1=0$,and $y+1=0$ is

$A$ piece of semiconductor is connected in series in an electric circuit. On increasing the temperature,the current in the circuit will

If $\vec{a}, \vec{b}, \vec{c}$ are mutually perpendicular vectors having magnitudes $1, 2, 3$ respectively,then $[\vec{a}+\vec{b}+\vec{c} \quad \vec{b}-\vec{a} \quad \vec{c}]=$

The maximum number of sub-levels,orbitals and electrons in $N$ shell of an atom are respectively

Which one of the following sets correctly represents the increase in the paramagnetic property of the ions?

Which mineral element is present in the structure of the amino acids cysteine and methionine?