571: Blood grouping was discovered by:
(a) Landsteiner
(b) Robert Koch
(c) William Harvey
(d) Louis Pasteur
572: The phenomenon of mirage is due to:
(a) Increased absorption of light by air at higher temperature
(b) Change in the refractive index of air with the change in temperature
(c) Total internal reflection
(d) Decreased absorption of light by air at higher temperature
573: Which one of the following statements is not correct?
(a) The Press Council of India is an autonomous quasi-judicial body established under an Act of Parliament.
(b) The Press Information Bureau provides accreditation to media persons so as to have easy access to information from government sources
(c) Among all the states of India, Maharashtra publishes the largest number of newspapers
(d) Press Trust of India is the largest news agency in the country
574: Willy-Willy is
(a) a type of tree grown in temperate regions
(b) a wind that blows in a desert
(c) a tropical cyclone of the north-west Australia
(d) a kind of common fish found near Lakshadweep islands
575: In which one of the following union territories, do the people of the Onge tribe live?
(a) Andaman and Nicobar Islands
(b) Dadra and Nagar Haveli
(c) Daman and Diu
(d) Lakshadweep