Answer: Option C
Explanation : The Earth’s population has Trebled since the turn of the century. It wasn’t until the early 19th century that the world population reached its first big milestone: 1 billion people. Then, as the industrial revolution took hold and living standards improved, the rate of population growth increased considerably. The 20th century, however, is where population growth really took off, and over the past 100 years, the planet’s population has more than tripled in size.

Answer: Option C
Explanation : In Pacific Ocean, the Earth’s active volcanoes concentrated at present. Volcanic eruptions occur only in certain places and do not occur randomly. This is because the Earth’s crust is broken into a series of slabs known as tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean.

Answer: Option C
Explanation : The largest country in the world (area-wise) is Russia. Covering an expanse of over 6.6 million square miles, Russia is the world’s largest country by landmass, beating out runner-up Canada by around 2.8 million square miles. It includes nine different time zones and shares land borders with 14 neighboring countries.

Answer: Option B
Explanation : Of the total water on the Earth, 3% fresh water reserve a constitute approximately. Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps.

Answer: Option D
Explanation : About 97 percent of the Earth’s water can be found in our oceans. Of the tiny percentage that’s not in the ocean, about two percent is frozen up in glaciers and ice caps. Less than one percent of all the water on Earth is fresh. A tiny fraction of water exists as water vapor in our atmosphere.

Answer: Option C
Explanation : Sunda Trench lies in Indian Ocean. The Sunda Trench, earlier known as and sometimes still indicated as the Java Trench, is an oceanic trench located in the Indian Ocean near Sumatra, formed where the Australian-Capricorn plates subduct under a part of the Eurasian Plate. It is 3,200 kilometres (2,000 mi) long.

Answer: Option C
Explanation : The first oil well in the world was drilled at Pensylvania. On August 28, 1859, George Bissell and Edwin L. Drake made the first successful use of a drilling rig on a well drilled especially to produce oil, at a site on Oil Creek near Titusville, Pennsylvania.

Answer: Option C
Explanation : If A and B are two stations antipode to each other then their seasons day and night are opposite. At antipodes, both the seasons and the pattern of day and night are thus opposite, i.e. winter at one and the summer at the other, and noon at one is simultaneous with midnight at the other point.

Answer: Option B
Explanation : The reef is located off the coast of Queensland, Australia, in the Coral Sea. Stretching for 1,429 miles over an area of approximately 133,000 square miles , the Great Barrier Reef is the largest coral reef system in the world.

Answer: Option A
Explanation : With the population of around 500, European country Vatican City has smallest population in the world. Vatican City is the smallest country in the world, measuring just 0.2 square miles, almost 120 times smaller than the island of Manhattan. Situated on the western bank of the Tiber River, Vatican City’s 2-mile border is landlocked by Italy.