Select Below a Character That Can Be Used in a User

question 33

Multiple Choice

Select below a character that can be used in a user account name:

• A)!
• B)@
• C):
• D)(?)

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Definitions:

Chloromethane

A colorless, flammable gas with a slight sweet odor, used in the production of silicones and butyl rubber.

Ethyne

A hydrocarbon compound with the formula C2H2, also known as acetylene, used as a fuel and a chemical building block.

Double Bonds

Chemical bonds between two chemical elements involving four bonding electrons instead of the usual two.

Acetylene

A colorless, highly flammable gas, C2H2, used as a fuel and a building block for synthetic materials; it’s the simplest alkyne.