1806: Radio carbon dating process is used to know the age of:
(a) Fossils
(b) Plants
(c) Rocks
(d) All of these
1807: 'Net metering' is sometimes seen in the news in the context of promoting the
(a) production and use of solar energy by the households/consumers
(b) use of piped natural gas in the kitchens of households
(c) installation of CNG kits in motor-cars
(d) installation of water meters in urban households
1808: Iron ore mines are located in which of the following group of places?
(a) Bokaro, Balaghat, Hazaribagh
(b) Singhbhum, Monghyr, Singareni
(c) Jharia, Raniganj, Wardha
(d) Singhbhum, Mayurbhani, Keonihar
1809: Cognizable offence refers to an offence where:
(a) Arrests can be made without warrant.
(b) Arrests can be made with warrant.
(c) It is under the jurisdiction of a court.
(d) Police can register a case without formal complaint.
1810: Amit has five friends : 3 girls and 2 boys. Amit's wife also has 5 friends : 3 boys and 2 girls. In how many maximum number of different ways can they invite 2 boys and 2 girls such that two of them are Amit's friends and two are his wife's ?
(A) 46
(B) 38
(C) 58
(D) 24