Q: 109 (CDS-I/2014)

Deficiency of which of the following elements is responsible for weakening of bones?
1. Calcium
2. Phosphorus
3. Nitrogen
4. Carbon
Select the correct answer using the code given below.
question_subject: 
Science
question_year: 
2014
question_exam: 
CDS-I
stats: 
0,768,440,768,232,120,88