Which of the following is NOT one of the tax slabs under GST?

GST (Goods and Services Tax) in India was introduced on 1 July 2017 as a unified indirect tax system.
It replaced multiple indirect taxes like excise duty, service tax, VAT, etc.
Official GST Tax Slabs:
India has four main GST slabs:
5% – for essential items (e.g., household necessities, packaged food).
12% – for processed food, computers, etc.
18% – for most goods and services (standard rate).
28% – for luxury goods and items like cars, tobacco, etc.
Special Rates:
0% (Exempted/Zero-rated) – for essentials like fresh fruits, vegetables, milk, education, healthcare.
0.25% & 3% – for precious stones and gold.
Therefore: Any rate like 2%, 10%, 15%, or 20% is NOT part of the official GST slabs.
In short: The GST system in India has slabs of 5%, 12%, 18%, and 28% (plus special rates for certain goods). Any rate outside these, such as 2%, is NOT a GST slab.