[Mission 2024] STATIC QUIZ, 16 August 2023 – Geography

Solution: b)

Options 1 and 3 are correct

Foot loose industries can be located in a wide variety of places. They are not dependent on any specific raw material, weight losing or otherwise. They largely depend on component parts which can be obtained anywhere. They produce in small quantity and also employ a small labour force. These are generally not polluting industries. The important factor in their location is accessibility by road network. Diamonds, computer chips, and mobile manufacturing are some examples of footloose industries.

Location of Cotton textiles, Cement industry and, Iron and Steel industries largely depend upon location of the raw materials. Thus, cannot be considered under the category of the Footloose industries.

Solution: b)

Statement 3 is incorrect.

The primary sector of the economy includes any industry involved in primary production that is the extraction and collection of natural resources; such as farming, forestry, hunting, fishing and mining. Thus, it forms the base for all other products. The primary sector tends to make up a larger portion of the economy in developing countries than it does in developed countries.

People engaged in primary activities are called red-collar workers due to the outdoor nature of their work.

Solution: c)

Statement 4 is incorrect.

Gas hydrates are a crystalline solid formed of water and gas. It looks and acts much like ice, but it contains huge amounts of methane; it is known to occur on every continent; and it exists in huge quantities in marine sediments in a layer several hundred meters thick directly below the sea floor and in association with permafrost in the Arctic. It is not stable at normal sea-level pressures and temperatures, which is the primary reason that it is a challenge to study.

Gas hydrates are important for three reasons:

• They may contain a major energy resource
• It may be a significant hazard because it alters sea floor sediment stability, influencing collapse and landsliding.
• The hydrate reservoir may have strong influence on the environment and climate, because methane is a significant greenhouse gas.

Gas hydrates are found in sub-oceanic sediments in the polar regions (shallow water) and in continental slope sediments (deep water), where pressure and temperature conditions combine to make them stable.

Solution: b)

Energy generated from tides is called tidal energy. Tidal energy can be harnessed by building dams at narrow openings of the sea. During high tide the energy of the tides is used to turn the turbine installed in the dam to produce electricity.

Solution: a)

Titanium is used in steel as an alloying element (ferro-titanium) to reduce grain size and as a deoxidizer, and in stainless steel to reduce carbon content. Titanium is often alloyed with aluminium (to refine grain size), vanadium, copper (to harden), iron, manganese, molybdenum, and other metals.

Aluminium and titanium are two metals with a low density. This means that they are lightweight for their size.

Aluminium is used for aircraft, trains, overhead power cables, saucepans and cooking foil. Titanium is used for fighter aircraft, artificial hip joints and pipes in nuclear power stations.