Which disease is characterized by the appearance of dry,scaly lesions on various parts of the body such as the skin,nails,and scalp?

$A$ charge $+Q$ is moving upwards vertically. It enters a magnetic field directed to the north. The force on the charge will be towards

Which of the following salts does not produce nitrogen dioxide $(NO_2)$ upon heating?

The equation of the circle passing through the point $(1, 2)$ and through the points of intersection of $x^2+y^2-4x-6y-21=0$ and $3x+4y+5=0$ is given by

If $a > 0$ and $b^2 - 4ac = 0$,then the curve $y = ax^2 + bx + c$

$A$ healthy person eats the following diet: $5 \ gm$ raw sugar,$4 \ gm$ albumin,$10 \ gm$ pure buffalo ghee adulterated with $2 \ gm$ vegetable ghee (hydrogenated vegetable oil) and $5 \ gm$ lignin. How many calories is he likely to get?