671: Assertion (A):
West-flowing rivers of Peninsular India have no deltas.
Reason (R):
These rivers do not carry any alluvial sediments.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
672: In ancient Indian historical geography the name Ratnakara denoted
(a) the Arabian Sea
(b) the Bay of Bengal
(c) the Indian Ocean
(d) the the confluence of the Ganga, the Yamuna and the mythical Saraswati at Prayaga
673: The first session of Indian National Congress in 1885 was held at:
(a) Bombay
(b) Calcutta
(c) Lahore
(d) Lucknow
674: A rectangle has a perimeter of 50 meters. If its length is 13 metres more than its breadth, then its area is
(a) 124 m2
(b) 144 m2
(c) 114 m2
(d) 104 m2
675: With reference to 'Li-Fi', recently in the news, which of the following statements is/are correct?
1. It uses light as the medium for high-speed data transmission.
2. It is a wireless technology and is several times faster than 'WiFi'.
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