UGC NET Questions (Paper – 1)

Statements A, B and D correctly describe IoT and its educational uses, whereas statement C is incorrect. A defines IoT as sensor-embedded physical objects that communicate over networks, which matches standard ICT usage. B is true because smart attendance systems and environmental sensors are typical examples of classroom IoT devices. D is also true, since data from such devices can be analysed for better campus and learning-space management. C is false because IoT applications depend on some form of network connectivity to exchange data and cannot always function in complete isolation.

Option A:
Option A is partly correct because statements A and B are true, but it omits D, which is also a correct and important statement. By excluding the role of analytics in using IoT data, this option does not capture the full set of true statements. Since at least one correct statement is missing, the option cannot be accepted as the best answer.

Option B:
Option B is correct because it includes exactly the true statements A, B and D and excludes the false statement C. It recognises the networked nature of IoT, its classroom applications and the analytical use of data for improvement. As it contains all and only the correct statements, it is the most accurate combination.

Option C:
Option C combines B and C and therefore mixes one true statement with one false statement. While B is correct about classroom IoT devices, C wrongly claims that IoT applications always work without connectivity. It also omits statement A and D, so this option is both incomplete and partially incorrect.

Option D:
Option D assumes that all four statements are correct, which would require accepting C as true. Because C misrepresents the need for network connectivity in IoT systems, including it makes the entire combination invalid. A correct option must exclude this false statement.