1. Sedimentary
2. Igneous
3. Metamorphic
4. None of these
Option “3” is correct. Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Marble may be foliated.
52. In which city is the Forest Research Institute of India located?
1. New Delhi
2. Hyderabad
3. Dehradun
4. Shimla
Option “3” is correct. The Forest Research Institute (FRI) is an institute of the Indian Council of Forestry Research and Education and is a premier institution in the field of forestry research in India. It is located at Dehradun in Uttarakhand, and is one of the oldest institutions of its kind.
53. India has longest international border with which country?
1. Bhutan
2. Nepal
3. Bangladesh
4. Pakistan
Option “3” is correct. India share longest border with Bangladesh a 4,096-kilometer (2,545-mile)-long international border followed by China(3380 km), Pakistan(3323 km), Myanmar(1643 km), Nepal(1236 km),Bhutan(699 km) and Afganistan(106 km).
54. Which of the following is the most abundant metal on Earth’s crust?
1. Magnesium
2. Iron
3. Copper
4. Aluminium
Option “4” is correct. Aluminum is the most abundant metal in the earth’s crust, it is never found free in nature. All of the earth’s aluminum has combined with other elements to form compounds.
55. Soil having high content of aluminum and iron oxide is also known as _____.
Option “2” is correct. Pedalfer is composed of high amount of aluminum and iron oxides. It is a subdivision of the zonal soil order comprising a large group of soils in which sesquioxides increase relative to silica during soil formation. Pedalfers usually occur in humid areas
56. Red rot is a disease caused to which of the following plant?
1. Paddy
2. Sugarcane
3. Mustard
4. Wheat
Option “2” is correct. Red rot is a disease caused to Sugarcane. Red rot is one of the major constraints in the profitable cultivation of sugarcane in many states of India. It is caused by the fungus Glomerella tucumanensis.
57. The smallest island country in the Indian Ocean is ?
1. Maldives
2. Sri Lanka
3. Mauritius
4. Madagasca
Option “1” is correct. The smallest island country in the Indian Ocean is Maldives.
58. Earth revolves around Sun. Who was the 1st one to present this theory?
1. Albert Einstein
2. Galileo Galilei
3. Copernicus
4. Newton
Option “3” is correct. Nicolaus Copernicus was a Polish astronomer who put forth the theory that the Sun is at rest near the center of the Universe, and that the Earth, spinning on its axis once daily, revolves annually around the Sun. This is called the heliocentric, or Sun-centered, system. Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543.
59. The path of a projectile is called its ______.
1. Altitude
2. Range
3. Trajectory
4. Flight
Option “3” is correct. Trajectory is the path followed by a projectile flying or an object moving under the action of given forces, a curve or surface cutting a family
60. Which park also shares its boundaries with Bangladesh?
1. Sundarbans National Park
2. Kaziranga National Park
3. Kanchendzonga National Park
4. Panna National Park
Option “1” is correct. The Sundarbans forest is about 10,000 sq km across India and Bangladesh, of which 40% lies in India, and is home to many rare and globally threatened wildlife species such as the estuarine crocodile, royal Bengal tiger, Water monitor lizard, Gangetic dolphin, and olive ridley turtle. The forest in India is divided into the Sundarbans Tiger Reserve and 24 Parganas (South) Forest Division, and together with the forest in Bangladesh is the only mangrove forest in the world where tigers are found.
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