541. Phytopathology is the study of ?
Plant diseases
542. Which element has two electrons in the K-shell only?
Helium
543. In human beings; normally in which part; does the sperm fertilize the ovum?
Fallopian tube
544. First President of Indian Republic?
Dr. Rajendra Prasad
545. Name the only disease totally eradicated in 1980 throughout the world by vaccination ?
Small pox
546. Who was the founder of Mangalam, a monthly, in 1969 from Kottayam?
M C Varghese
547. The Ilbert Bill agitation led to "the foundation of which conference?
All India National Conference
548. Which is another name of RDX ?
Cycionite
549. Great Britain and Northern Ireland joined together and became United Kingdom of Great Britain and Ireland by ?
‘The Act of Union' of 1801
550. Radioactive distintegration of uranium ultimately results in which formation?
Lead