What is stereoganic Centere?

What is photosystems? Which is the pigment that act as reaction center ?

What are active centers ?

Statement 1 : The center of the circle having x+y=3 and x-y=1 as its normals is (1, 2) Statement 2 : The normals to the circle always pass through its center

In a solid AB having the NaCl structure, A atom occupies the alternate corners of the cubic unit cell and B atom is present on face center . if 3 atoms of B are missing from the the face center then the resultant stoichiometry of the solid is

A hollow metal sphere of radius 5 cm is charged such that potential on its surface is 10V. What is the potential at the center of the sphere?

In a face centered cubic arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centers. One of the B atoms missing from one of the face in unit cell. The simplest formula of compound is:

The locus of the midpoint of a line segment that is drawn from a given external point P to a given circle with center O (where O is the orgin) and radius r is (a) straight line perpendiculat to P O (b) circle with center P and radius r (c) circle with center P and radius 2r (d) circle with center at the midpoint P O and radius r/2dot

Prove that the locus of the center of the circle which touches the given circle externally and the given line is a parabola.

The locus of the center of a variable circle which always touches two given circles externally is