741: Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torchlights, electric shavers, etc?
(a) Nickel and cadmium
(b) Zinc and carbon
(c) Lead peroxide and lead
(d) Iron and cadmium
742: In a fluorescent tube which of the following components are found?
(a) Mercury vapour
(b) Argon and carbon dioxide
(c) Helium and oxygen
(d) Argon and neon
743: Recently, which one of the following was included in the UNESCO's World Heritage list?
(a) Dilwara Temple
(b) Kalka-Shimla Railway
(c) Bhiterkanika Mangrove Area
(d) Vishkhapatnam to Araku valley railway line
744: Matriarchical system obtains among the
(a) Nagas, Nairs and Meenas
(b) Nairs and Khasis
(c) Bhils, Nairs and Khasis
(d) Nagas and Khasis
745: Match items in the List-I with List-II and select the correct answer using the codes given below the lists:
List I (Power Station)
(A) Kothagudem
(B) Raichur
(C) Mettur
(D) Wanakbori
List II (State)
1. Andhra Pradesh
2. Gujarat
3. Karnataka
4. Tamil Nadu
(a) 1 2 4 3
(b) 4 3 1 2
(c) 4 2 1 3
(d) 1 3 4 2