Which one of the following is the heterocyclic compound?

(A) If two compounds have the same empirical formula but different molecular formula, they have same vapour density.
(R) g/mL is the unit of vapour density.

The desiccants used for absorbing water during Liebig's method for estimation of carbon and hydrogen are:

Formula which represents a simple ratio of atoms of different elements present in a molecule of the substance is called:

If a sphere of constant radius k passes through the origin and meets the axis in A, B, C then the centroid of the triangle ABC lies on

Hence option 2 is correct

The equation of the sphere circumscribing the tetrahedron whose faces are x = 0, y = 0, z = 0 and is equal to

The lines and are coplanar if l is

The line intersects the curve xy = c², z = 0 if c =

Equation of the plane through the points (2, 1, -1) and (-1, 3, 2) and perpendicular to the plane x – 2y + 4z = 0 is given by

The four points (0, 4, 3) , (-1, -5, -3) , (-2, -2, 1) and (1, 1, -1) lie in the plane