Answer: Option D. -> Atlas - North-Western Mountains Africa
Answer: (d)

Answer: Option C. -> 1, 2 and 3
Answer: (c)
The Kalahari desert is a large semi-arid sandy Savanna in South Africa extending 900000 sq km (35000 sq mi), covering much of Botswana and parts of Namibia and South Africa.
As a semi-desert, with huge tracts of excellent grazing after good rains, the Kalahari supports more animals and plants than a true desert, such as the Namib desert to the West. There are small amounts of rainfall and the summer temperature is very high.
It usually receives 3-7.5 inches (76-190 mm) of rain per year. The surrounding Kalahari Basin covers over 2500000 sq km (970000 sq mile) extending farther into Botswana, Namibia and South Africa and encroaching into parts of Angola, Zambia and Zimbabwe.

Answer: Option D. -> China
Answer: (d)

Answer: Option A. -> 3 1 2 5 4
Answer: (a)
Block Mountain – Black forest
Old Fold Mountain – Appalachian
Young Fold Mountain – Rocky
Volcanic Mountain – Vesuvious
Relict Mountain – Scottish Highlands

Answer: Option D. -> Schist-Gneiss
Answer: (d)
The schists constitute a group of medium-grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. Gneissic rocks are usually medium- to coarse-foliated and largely recrystallized but do not carry large quantities of micas, chlorite or other platy minerals.
Mica minerals make some rocks sparkle! They are often found in igneous rocks such as granite and metamorphic rocks such as schist. Most schists are mica schists, but graphite and chlorite schists are also common.
Schist is a crystalline metamorphic rock, mostly composed of more than 50% tabular and elongated minerals.

Answer: Option A. -> Collision of earth plates
Answer: (a)
An earthquake is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. The world’s earthquakes are not randomly distributed over the Earth’s surface.
.They tend to be concentrated in narrow zones. An explanation is to be found in plate tectonics, a concept that has revolutionized thinking in the Earth’s sciences. Plate tectonics tells us that the Earth’s rigid outer shell (lithosphere) is broken into a mosaic of oceanic and continental plates which can slide over the plastic asthenosphere, which is the uppermost layer of the mantle.
The plates are in constant motion. Where they interact, along their margins, important geological processes take places, such as the formation of mountain belts, earthquakes, and volcanoes.

Answer: Option A. -> rivers
Answer: (a)
Dendritic drainage systems are the most common form of the drainage system. The term Dendritic comes from the Latin word 'dendron', meaning tree, due to the resemblance of the system to a tree.
In a dendritic system there is one main river (like the trunk of a tree), which is joined and formed by many smaller tributary rivers.
Dendritic systems form in V-shaped valleys; as a result, the rock types must be impervious and non-porous.

Answer: Option B. -> 1 part
Answer: (b)Because the density of pure ice is about 920 kg/ m³, and that of sea water about 1025 kg/m³, typically only one-ninth of the volume of an iceberg is above water.

Answer: Option A. -> Cretaceous
Answer: (a)
The correct chronological order of the geological eras (in million years before the present) are as follows:-
Cretaceous: 72.1-145;
Jurassic: 152.1-201.3;
Triassic: 208.5-201.3;
Permian: 254.2-298.9.

Answer: Option C. -> Gibson – Brazil
Answer: (c)