Is the common krait venomous?

This snake has an average length of 1.0 meters and a maximum length of 1.8 meters. It is slightly slim. It may be blue-black, pale bluish-gray, blue steel, brown or regular black. There are thin white yellow, or brownish cross bands coupled together. 

Young reptiles might have white spots along with the first one-third of the body rather than cross bands. The lower part is white in color. The head has an egg-shaped appearance bit distinct from the neck. The eyes are tiny, small on the snout, yellowish-white on the upper lip, and the tail are small with the tip pointed.

This reptile has nocturnal behavior. At the night it is extremely active and nimble. It often hides under debris in rat grooves, loose ground, so it's seldom seen during the day. If it's shaken, the body twists and makes shaky motions with its head hidden. It can also raise its tail. 

It is not inclined to bite but can bite fast. Typically peaceful, non-threatening during the day, but during the night it may become violent. This is Bungarus most dangerous species. The venom is extremely poisonous. It seldom bites, but 76 % of the sufferers died in one survey.

In this organism, alterations in day/night behavior have been noted: it does not try to run away during the day, instead keeps rolling its skin into a soft coiled ball, helping to keep its head well-concealed in the coil, while the tail tip is held above and tangled. 

The ball flips and hisses when touched, with jerky movements. The snake offers considerable handling in a "balled" state, but the bite is also instigated by over-treating. At night, the snake is very aggressive, runs away noisily, or remains silent, and sometimes biting the source of distress.

The snake feeds on frogs, toads, reptiles, salamanders, and rodents. It is known that the kraits are cannibalistic. The light-dark effect created under vegetation during the day effectively masks the snake. However, when piles of cut vegetation, stones, garbage, etc., are at hand, it quickly shelters under them. It probably stays in grooves and passageways in the ground.