711: Which one of the following is a Vedanga?
(a) Sruti
(b) Smriti
(c) Nirukta
(d) Samhita
712: Who prepares topographical maps of India?
(a) Survey of India
(b) Ministry of Home Affairs
(c) Geological Survey of India
(d) Archaeological Survey of India
713: Consider the following statements:
1. Sweet orange plant is propagated by grafting technique.
2. Jasmine plant is propagated by layering technique.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 & 2
(d) Neither 1 nor 2
714: What would happen if phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 2 only
(c) 3 only
(d) 1, 2 and 3
715: Extrusive (Intrusive) rocks are forms of:
(a) Igneous rocks
(b) Sedimentary rocks
(c) Metamorphic rocks
(d) None of the above