836: At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds,
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 2 Only
(c) 1 and 3 only
(d) 1, 2 and 3
837: Which of the following States lies partly to the north of the Himalayas ?
(a) Himachal Pradesh
(b) Arunachal Pradesh
(c) Jammu & Kashmir
(d) Sikkim
838: Why the Indian farmers plough their fields during the time interval between two crops?
(a) In order to keep the soil loose for further cultivation
(b) To increase the porosity of the soil
(c) To escape drought
(d) To prevent clodding
839: Which one of the following companies is associated with the exploration and commercial production of oil in Barmer-Sanchore basin of Rajasthan?
(a) Cairn Energy
(b) ONGC
(c) Reliance Energy Ventures
(d) Reliance Energy Ventures
840: Of the four landmarks in medical history given below, which one was the first to take place ?
(a) Organ transplant
(b) Bypass surgery
(c) Test-tube baby
(d) Plastic surgery