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General Science for RRB JE, NTPC Exam : Part 57 (in Hindi)
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Hemant Mishra is teaching live on Unacademy Plus

Hemant Mishra
Cleared RRB Clerk , SBI Clerk pre, NTPC 2016, 1 year experience in software developing along with 5 year Experience in Teaching .

Unacademy user
u r not come properly mam
sir last mai aapne bola ye kuch tha lekin ye kuch smjh ni aaya sir
ध्वनि प्रदूषण के कारण लोगोंं में Neurotic Mental disorder हो जाता है। माँसपेशियों में तनाव तथा खिंचाव हो जाता है।
kitne lecture hai isme ????
sir D is right answer