The name of the complex ion,$[Fe(CN)_6]^{3-}$ is:

The concept of chemical evolution is based on

Two polaroids are placed in the path of an unpolarized beam of intensity $I_0$ such that no light is emitted from the second polaroid. If a third polaroid,whose polarization axis makes an angle $\theta$ with the polarization axis of the first polaroid,is placed between these polaroids,then the intensity of light emerging from the last polaroid will be:

What are the products formed when ammonia reacts with excess chlorine?

Which one of the following is not a condensation polymer?

The angle between the straight lines represented by $(x^2+y^2) \sin^2 \alpha = (x \cos \alpha - y \sin \alpha)^2$ is