Among the following,the compound that is both paramagnetic and coloured is

Portland cement is manufactured using which of the following?

The negation of the statement ''If $I$ become a teacher,then $I$ will open a school'',is

The set of quantum numbers for the $19^{th}$ electron in chromium $(Cr)$ is:

$A$ person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly?

Which one of the following is used in the preparation of cellulose nitrate?