MCQs UGC - NET - English
1. The main layers of the Earth in correct order, from the surface moving down, are:
(a) Upper mantle, lower mantle, inner core, crust
(b) Crust, mantle, outer core, inner core
(c) Upper crust, outer core, inner core, mantle
(d) Outer core, inner core, upper mantle, lower crust
Answer: (b)
2. Which of the following is NOT one of the main families of rocks?
(a) Meteorites
(b) Sedimentary
(c) Metamorphic
(d) Igneous
Answer: (a)
3. What steps are involved in having a hypothesis become an established theory?
(a) The hypothesis makes sense when explained by politicians
(b) A United Nations scientific panel votes on whether the hypothesis is accepted
(c) A U.S. government agency votes on whether the hypothesis is accepted
(d) The hypothesis is consistent with new data and investigations used to test its predictions
Answer: (d)
4. The lithosphere can be described as a layer of the Earth that is located:
(a) Within the asthenosphere, and it consists of heat-softened, weak rock
(b) Within the lower portion of the mantle and contains solid, relatively strong rock
(c) Just below the asthenosphere, and it contains both the crust and some mantle material
(d) Just above the asthenosphere, and it consists of solid, relatively strong rock
Answer: (d)
5. Little or no volcanic activity is associated with which of the following plate boundaries?
(a) Subducting plate boundaries
(b) Transform plate boundaries
(c) Divergent plate boundaries
(d) Converging plate boundaries
Answer: (b)
6. The mineral halite has cube-shaped crystals because:
(a) Cubes are the most common way two tetrahedron can join
(b) Of the arrangement of atoms in the crystal structure (a.k.a. the crystal ‘lattice’)
(c) Halite is soluble in water
(d) There are no planes along which the mineral can break (i.e. it has no cleavage)
Answer: (b)
7. Which of the following is NOT a main type of silicate structure?
(a) Framework
(b) Single chains
(c) Triple chains
(d) Double chains
Answer: (c)
8. The property that distinguishes an atom to be that of a particular elements is:
(a) The number of neutrons and protons together
(b) The number of electrons it has
(c) The number of neutrons it has
(d) The number of protons it has
Answer: (d)
9. In the mineral olivine, iron and magnesium can substitute freely in the crystal for all of the following reasons EXCEPT:
(a) They are both abundant in the Earth’s crust
(b) They are similar in size
(c) They have the same charge
(d) They have the same atomic mass
Answer: (d)
10. The primary difference between magma and lava is that:
(a) Magma becomes lava anytime it is in a cooling condition
(b) They are produced from different parent materials
(c) One is below the ground, the other is above the ground
(d) One occurs at divergent plate boundaries, the other at convergent plate boundaries
Answer: (c)
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