universe & solar system section 7 Practice Questions Answers Test with Solutions & More Shortcuts

Universe, solar system and Astronomy PRACTICE TEST [13 - EXERCISES]

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Question : 1

Gutenberg discontinuity separates

a) Lower mantle from outer core

b) Outer core from the inner core

c) Upper mantle from lower mantle

d) Crust from the upper mantle

Discuss »

Answer: (a)

Question : 2 [UPPCS (Mains) 2004]

The planet nearest to the Sun is

a) Venus

b) Pluto

c) Earth

d) Mercury

Discuss »

Answer: (d)

Question : 3

The theory suggesting that the continents of South America and Africa were once joined together was the

a) Kant’s theory

b) Ritter’s theory

c) tetrahedral theory

d) continental drift theory

Discuss »

Answer: (d)

Question : 4 [CDS 2016-II]

Match List-I with List-II and select the correct answer using the code given below the Lists:

List I List II
(Geological time scale) (Life-form)
A. Pleistocene 1. Mammals
B. Paleocene 2. Human genus
C. Permian 3. Invertebrates
D. Cambrian 4. Frogs
Codes: A B C D

a) 3 4 1 2

b) 3 1 4 2

c) 2 4 l 3

d) 2 1 4 3

Discuss »

Answer: (c)

  • Pleistocene - Human genus
  • Paleocene - Frogs
  • Permian - Mammals
  • Cambrian – Invertebrates

Question : 5 [NDA 2013-II]

Composite volcanic cone is also called strata cone because of the

a) cataclysmic eruption

b) eruption of lava flow from a fissure

c) uneven streams of lava flow

d) alternating sheets of lava and pyroclastic materials

Discuss »

Answer: (a)

Composite cone volcanoes, which are also called ‘stratovolcanoes’ or simply ‘composite volcanoes,’ are cone-shaped volcanoes composed of layers of lava, ash, and rock debris.

These steep-sided volcanoes erupt in an explosive manner. It is also called strata cone because of the cataclysmic eruption.

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