12.
Which of the following is/are true about the Negotiable Instruments Act, the Promissory Note?
1. Definition of Promissory Note is given in section 8 of the Negotiable Instrument Act
2. Containing an unconditional undertaking
3. To pay a certain sum of money only to a specific person or the bearer
4. The seller is bound to accept the promissory note
5. A document was written and signed by the payer/maker

13.
In India, which of the following are non-GST goods?
1. Petroleum crude
2. High-speed diesel
3. Motor spirit (commonly known as petrol)
4. Natural gas
5. Aviation turbine fuel
6. Alcoholic liquor for human consumption

14.
If any part of a single consideration for one or more objects, or any one or any part of any one of several consideration of a single object is unlawful, then:

20.
In which of the following cases, right of lien can be exercised?