636: With reference to the use of nano-technology in health sector, which of the following statements is/are correct?
1. Targeted drug delivery is made possible by nanotechnology.
2. Nanotechnology can largely contribute to gene therapy.
Select the correct answer using the code given below.
(a) 1 only
(b) 2 Only
(c) Both 1 and 2
(d) Neither 1 nor 2
637: The caves and rock-cut temples at Ellora are
(a) Buddhist
(b) Buddhist and Jain
(c) Hindu and Jain
(d) Hindu, Buddhist and Jain
638: A fertile-soil, suitable for growing common crops, is likely to have a pH value of
(a) three
(b) four
(c) six to seven
(d) nine to ten
639: The Sultan of Delhi who is reputed to have built the biggest network of canals in India was
(a) Iltutmish
(b) Ghiyasuddin Tughlaq
(c) Feroz Shah Tughlaq
(d) Sikandar Lodi
640: The Dul Hasti Power Station is based on which one of the following rivers?
(a) Chenab
(b) Beas
(c) Ravi
(d) Sutlej