Compressed Natural Gas (CNG) has the same chemical composition as that of _____?

Compressed Natural Gas (CNG) has the same chemical composition as that of _____?

کمپریسڈ نیچرل گیس (سی این جی) کی کیمیائی ساخت وہی ہے جو _____ کی ہے؟
Explanation

CNG and Sui Gas have the same composition, primarily methane (CH₄).

Both are used as fuel for heating and vehicles.