The telluric helix was given by (A) De Chancourtois (B) Newlands (C) L Meyer (D) Mendeleev

The telluric helix was given by (A) De Chancourtois.

Here's an explanation:

The telluric helix is a graphical representation of the periodic table introduced by Dmitri Mendeleev. However, it's important to note that while Mendeleev is widely known for his contributions to the periodic table, the telluric helix itself is specifically associated with De Chancourtois.

De Chancourtois was a French geologist who developed a three-dimensional representation of the elements in the form of a helix. His model, known as the telluric helix, was an early attempt to visualize periodic relationships among elements. In this model, the elements are arranged in a helical spiral around a cylinder, with each turn of the helix representing a new period in the periodic table.