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226. X-ray crystallography was developed by
A. Bragg
B. Kirkpatrick
C. Astbury and Franklin
D. Watson and Crick
Explanation:
227. A heavy isotope is
A. ¹⁴C
B. ³H
C. ¹⁵N
D. ³²P
Explanation:
228. Scintillation counter is used for locating
A. Radioisotope
B. Heavy isotope
C. DNA
D. mRNA
Explanation:
229. A chemicals which emits radiations of visible light after irradiation with UV rays is
A. Fluorochrome
B. Luminescent
C. Metachrome
D. Autofluorescent
Explanation:
230. Schultze’s reagent can stain differentially
A. Cellulose
B. Starch
C. Lignin, cutin and suberin
D. All the above
Explanation:
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