Question 1:
Diagram 1.1 shows two examples of carbon compounds, K and L.



(a)(i) Based on Diagram 1.1, which one is an inorganic carbon compound? [1 mark]

(ii) State one characteristic of an inorganic carbon compound. [1 mark]

(b)(i) State one use of compound K. [1 mark]

(ii) State one effect of compound K on the nervous system if consumed excessively. [1 mark]

(c) Diagram 1.2 shows a tank containing gas M used for gas stoves.
Gas M is a hydrocarbon compound.

(i) State two elements present in gas M. [1 mark]
 
(ii) State one source of gas M. [1 mark]


Answer:
(a)(i) L or marble chips

(a)(ii) Originates from non-living things or does not originates from living things

(b)(i) Alcoholic drink

(b)(ii) Disrupts nerve coordination or slows down the transmission of impulses

(c)(i)
1. Hydrogen
2. Carbon

(c)(ii) Petroleum