A group of crows is called : a murder of crows.
Which is the famous mosque on the banks of Dal lake, Kashmir : Hazratbal mosque
The ‘bel’ in the decibel stands for : The name Alexander Graham Bell. Decibel is one-tenth of ‘bel’, a unit which expresses the ration of two values of the power of sound. Decibel is commonly used unit.
The length of Panama Canal is : 77 Km (Canal which connects Atlantic and Pacific Ocean)
‘Kaviraja marga’, a work on grammar and poetics written in around 850 AD, was authored by Amoghavarsha I, a king of Rashtrakuta dynasty. The language in which the work was written is : Kannada