Test: Geography- 2 - UPSC MCQ

The correct answer is B as The actual moisture content of a sample of air asa percentage of that contained in the same volume of saturated air at the same temperature is called relative humidity.

The region that receives rainfall throughout the year due to westerly winds is South Chile (Option D). South Chile, particularly the southern part of the country, experiences a maritime climate influenced by the westerlies. These winds carry moisture from the Pacific Ocean, resulting in abundant rainfall throughout the year in areas like the coastal regions and the southern Andes Mountains. This consistent rainfall supports the growth of temperate rainforests and contributes to the region's unique biodiversity.

B is the correct option.Low rainfall, low supply of fresh water and high evaporation are the main reason of high salinity. Salinity can affect the density of ocean water: Water that has higher salinity is denser and heavier and will sink underneath less saline, warmer water.

The correct option is B.
The factors that can modify the currents are direction and shape of coastlines, bottom reliefs of the ocean basins, seasonal variations and rotation of the earth. Ocean circulation is driven by winds and by differences in water density.

Hydrogenous sediments are sediments solidified out of ocean water. As such, chemical reactions create these kinds of sediments. The precipitation of dissolved chemicals from seawater. These kinds of sediments are found commonly near hydrothermal vents.
Phosphate nodules: These are spherical concentrations that are randomly distributed along the floor of continental shelves. Most phosphorite grains are sand size although particles greater than 2 mm may be present. These larger grains, referred to as nodules, can range up to several tens of centimeters in size.
 

The correct sequence of these mountain ranges from south to north are
Dhauladhar Range, Zanskar Range, Ladakh Range and Karakoram.

The category “tropical crops” refers to plants that grow in tropical climates. ropical climates are generally warm to hot year-round. Depending on the location many tropical areas have a dry and wet season.

The Himalaya are among the most seismically active regions in the world, the result of an ongoing collision between two continental plates tectonics: the Indian and the Eurasian.Each jerky advance causes earthquakes of varying intensity

Correct Answer :- c

Explanation : a) The Date palm (Phoenix dactylifera L.) is grown throughout the arid and semiarid regions of the world, particularly in West Asia and North Africa. It is well adapted to the desert environment, where a dry and warm climate is important for fruit maturity and ripening.

Date palm trees are the tress which require only little amount of water. deserts are the areas where the temperature is high and rainfall is low.

b) The huge leaves are made to survive a hot, dry climate, and adapt the tree to long summers without rain, but the palm needs a source of regular water. The date palm's ideal growing conditions are found in the more watery areas of the subtropical deserts of the Middle East: oases and river banks.

The Peninsular drainage system is older than the Himalayan one. This is evident from the broad, largely-graded shallow valleys, and the maturity of the rivers.

Evolution: Three major geological events in the distant past have shaped the present drainage systems of Peninsular India:

• Subsidence of the western flank of the Peninsula leading to its submergence below the sea during the early tertiary period. Generally, it has disturbed the symmetrical plan of the river on either side of the original watershed and left just the upper parts of west flowing rivers above the sea level.

• Upheaval of the Himalayas when the northern flank of the Peninsular block was subjected to subsidence and the consequent trough faulting. The Narmada and The Tapi flow in trough faults and fill the original cracks with their detritus materials. Hence, there is a lack of alluvial and deltaic deposits in these rivers.

• Slight tilting of the Peninsular block from north-west to the southeastern direction gave orientation to the entire drainage system towards the Bay of Bengal during the same period.