Pearl is a hard object produced within the soft tissues of a mollusk. Which one of the following is the main constituent of pearl?

examrobotsa's picture

Submitted by examrobotsa on

Q: 9 (CDS-II/2017)
Pearl is a hard object produced within the soft tissues of a mollusk.
Which one of the following is the main constituent of pearl?
AnyChart Trial Version

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,34,7,34,2,3,2

keywords: 

{'pearl': [0, 0, 0, 1], 'mollusk': [0, 0, 0, 1], 'calcium carbonate': [0, 0, 1, 4], 'calcium oxide': [0, 0, 0, 1], 'calcium': [2, 0, 0, 4], 'calcium sulphate': [0, 1, 1, 7], 'soft tissues': [0, 0, 0, 1], 'main constituent': [0, 0, 1, 0], 'hard object': [0, 0, 0, 1]}