Explanation

• Option a is correct – On-Screen Marking, or OSM, is a digital evaluation system in which teachers assess scanned copies of answer books on a computer rather than checking physical scripts.
• Candidates continue to take examinations utilizing conventional physical answer booklets.
• Physical scripts are systematically scanned and uploaded to a secure platform.
• Uploaded booklets are automatically anonymized to prevent grading bias and digitally distributed to designated evaluators.
• The Board first explored OSM in 2014 but did not proceed because suitable scanning technology was not available.

Explanation

• Option a is correct – The majuli island is known as the world’s largest inhabited river island.
• It perched between the Brahmaputra River to the south and east, the Subansiri River to the west, and a branch of the Brahmaputra to the north.

Explanation

• Statement 1 is incorrect – The Indian hog deer (Axis porcinus) is not a rainforest species.
• It is a grazer that primarily inhabits alluvial grasslands, floodplains, and marshy areas, particularly along major river valleys like the Indo-Gangetic plains.
• Statement 2 is incorrect – In hog deer, males are larger and heavier than females. Males also possess distinct antlers, which females lack.

Explanation

• Statement 1 is correct – The BrahMos is indeed an unmanned payload rocket that functions as a supersonic cruise missile.
• It is widely considered one of the fastest cruise missiles in the world, capable of reaching speeds of up to Mach 2.8 to 3.0.
• Statement 2 is incorrect – BrahMos is not a joint venture with France. It is an Indo-Russian joint venture.