Concept: ICT means Information and Communication Technology. In disaster studies, ICT tools help in communication, mapping, early warning, data storage, analysis, and coordination.
Step 1: Understanding ICT tools.
ICT tools are technology-based tools used for collecting, processing, sharing, and analysing information.
\[
\text{ICT} = \text{Information + Communication + Technology}
\]
Step 2: Checking the options.
GIS is used for mapping hazard zones and vulnerable areas.
Big data and cloud help in storing and analysing large disaster-related datasets.
Social media helps in communication, alerts, rescue information, and public awareness.
Step 3: Identifying the option which is not an ICT tool.
Notes are not a specific ICT tool. Notes may be used for writing information, but they are not a technological system like GIS, cloud, or social media.
Therefore, the correct answer is Notes.