About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and
1. phosphorus and sulphur
2. sulphur and magnesium
3. magnesium and sodium
4. calcium and phosphorus

Subtopic:  Element Analysis |
 52%
From NCERT
AIPMT - 2007
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Match List-I with List -II: 
List- I List-II
(a) Adenine (i) Pigment
(b) Anthocyanin (ii) Polysaccharide
(c) Chitin  (iii) Alkaloid
(d) Codeine (iv) Purine
Choose the correct answer from the options given below:
(a) (b) (c) (d)
1. (iv) (i) (ii) (iii)
2. (iv) (iii) (ii) (i)
3. (iii) (i) (iv) (ii)
4. (i) (iv) (iii) (ii)
Subtopic:  Element Analysis |
 90%
From NCERT
NEET - 2022
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