CBSE Questions for Class 10 Geography Minerals And Energy Resources Quiz 2 - MCQExams.com

Aluminum which is obtained from Bauxite  ore  is the perfect material to use when manufacturing airplanes,  as It is strong, lightweight, predictable and inexpensive. Steel and iron are both stronger than aluminum, but the problem with steel and iron is its weight. Both of these metals are much heavier than aluminum — and too much weigh restricts an airplane’s ability to takeoff and fly.

 It’s estimated that up to 80% of the materials used in modern-day aircraft is aluminum. The Wright brothers used a steel engine in their early-model Flyer plane, which was not only heavy but lacked the power necessary for takeover. As a result, they acquired a special engine made of cast aluminum, which allowed their Flyer-1 to takeoff with ease.

1. Orissa: is the largest bauxite producing state accounting for more than half of the total production of India. 
2. The total recoverable reserves in the state are estimated at 1,370.5 million tones. 
3. The main bauxite belt is in Kalahandi and Koraput districts and extends further into Andhra Pradesh.

1. The mineral mica is a group of aluminosilicates with various metals that split into fine sheets. They have a layered texture and have multiple uses. It is a translucent, optically flat, and elastic mineral. 
2. It is found in a variety of consumer goods, from cosmetics to electronic appliances. 
3. It is added to rubber products such as tires to prevent sticking.
4. Additionally, it is used in paints to improve their pigmentation.

1. As we know that India produces just 20% crude oil of its requirement and rests 80% is imported from abroad.
2.  Crude oil and other related products account for around 22% total import bill of India. 
3. The second spot is acquired by the capital goods (machinery, base metal, transport equipment) which accounts for 19.2% of the total Indian imports. 
4. The third spot is secured by the import of gems and jewelry (16.8 %of the total imports)
5.  The fourth and the fifth spot is secured by the chemical & related products (12.7%) and electronic goods (11.4%) respectively.

1. Diamonds are at the top of Friedrich Mohs scale of mineral hardness next comes topaz, quartz, feldspar, apatite, fluorite, calcite, gypsum.
2. They are incredibly hard because they have crystallized in a particular atomic shape that resulted from heat and pressure on Earth at a depth of 140 to 150km.

Renewable energy is used to describe energy sources that are replenished by natural processes on a sufficiently rapid time-scale so that they can be used by humans more or less indefinitely, provided the quantity taken per unit of time is not too great. Renewable energy is derived from natural processes that are replenished constantly. In its various forms, it derives directly from the sun, or from heat generated deep within the earth.

• Minerals are natural resources which are limited.
  
• If they are continuously mined and used they will get exhausted.
• The geological processes of mineral formation are so slow that the rate of replenishment is small in comparison to the present rates of consumption.

Madhapur near Bhuj in Gujarat is the largest producer of solar energy.

India is a tropical country. It has enormous possibilities for tapping solar energy. Photovoltaic technology converts sunlight directly into electricity. Solar energy is fast becoming popular in rural and remote areas. Some big solar power plants are being established in different parts of India.