UPSC Prelims Mini Mock Test: 423

How many presidents of India so far were elected unopposed?

Consider the following: 
1. Cattle
2. Buffalo
3. Mithun
4. Yak
Which of the above is / are classified as Milch animals? 

Consider the following Brahmanas with Vedas to which they are attached:

1. Satapatha Brahmana - Samaveda
2. Taittiriya Brahmana - Krishna Yajurveda
3. Gopatha Brahmana - Atharvaveda

Which of the above is/are correct?

In context with the green house gases, consider the following statements:
1.GHGs absorb the radiation in the visible range and emit the radiation in thermal infrared range
2.Without GHGs , earth would have been cooler than at present
3.Oceans are sinks of Green Houses Gases
Which among the above is / are correct statements?

Who is appointed as the Returning Officer/Assistant Returning Officer for the election to the Office of President of India?