The strange noises came from Anand’s time machine. When Boppa entered the room, he accidentally activated it, leading to eerie sounds like humming, howling, and crashes. Correct answer: B. Anand’s time machine getting activated
Class 7 English NCERT Poorvi Unit 3 Chapter 1 My Brother’s Great Invention solutions
Class 7 English Textbook Dreams and Discoveries Chapter 1 My Brother’s Great Invention question answer
The strange noises were most likely caused by Anand’s time machine being activated accidentally by the thief Boppa. The room produced loud crashes, muffled thumps, an eerie whine and humming sounds, which frightened both children. Anand immediately recognized that it was his invention at work. These mechanical and unnatural sounds confirmed that the machine had started functioning, possibly trapping or transporting Boppa—something even Anand hadn’t expected to happen.
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