For regenerating signals which device is used

What is the simplest hydrocarbon?

Anesthesia which is administered during the surgeries in the hospitals is a mixture of which of the following gases?

Activated charcoal is used to remove colouring matter from pure substances by which of the following process?

Vitamin necessary to prevent prolonged bleeding is 

Which of the following metals forms an amphoteric oxide?

Which substance is a multibranched polysaccharide of glucose used for energy storage in animals and fungi?

Which one of the following is commonly used for pulp bleaching in the paper industry?

The process of gaining electrons is known as:

_____ are a group of chemicals that influence cell division and shoot formation.

The product of the equivalent weight and valency of an element equals its ______.