2766: Antigen is a substance which
(a) destroys harmful bacteria
(b) is used to treat poisoning
(c) lowers body-temperature
(d) stimulates formation of antibody
2767: Whom did Gandhiji consider his political Guru?
(a) Vinoba Bhave
(b) B. G. Tilak
(c) Gopal Krishna Gokhale
(d) Dadabhai Naoroji
2768: Who among the following invented Lasers?
(a) Theodore Maiman
(b) William Morton
(c) Francis Crick
(d) Denis Papin
2769: If water contracts on freezing, which of the following would happen?
(a) Icebergs will completely float on the surface of water
(b) Ice would become more dense
(c) Lakes would freeze from top to bottom
(d) Rocks will crack due to freezing or internal water
2770: Which of the following would include Foreign Direct Investment in India?
1. Subsidiaries of companies in India
2. Majority foreign equity holding in Indian companies
3. Companies exclusively financed by foreign companies
4. Portfolio investment
Select the correct answer using the codes given below :
(a) 1, 2, 3 and 4
(b) 2 and 4 only
(c) 1 and 3 only
(d) 1, 2 and 3 only