CAPF (AC) 2017 (Paper-1) (Question 51-100)

The Cyprus Island is located in the Mediterranean Sea. Falkland is located in the Atlantic Ocean. Islas Cocos is located in the Indian Ocean. The Chagos Archipelago or Chagos Islands is a group of seven atolls comprising more than 60 islands in the Indian Ocean.

It is widespread around 500 kilometres south of the Maldives archipelago. According to the census 2014, it has a population of 3000 people. It was home to the Chagossians, a Bourbonnais Creole-speaking people. Therefore, the correct option is (c).

Zinc is one of the oldest zinc mines in the world. It is found in Zawar. It is declared as the National Geological Monument. It is a township created by mining company Hindustan Zinc Limited. Gold is found in Hutti.

It accounts for around 80 per cent of the total production of gold in India. Chromite is found in Sukinda, a town in Jajpur district, Rajasthan. Pyrite is found in Amjhore. Therefore, the correct option is (c).

Acensus is defined as the procedure of systematically calculating, acquiring and recording information about the members of a given population. In 1872, the Census of India was started under the British viceroy Lord Mayo. In 1181, the first complete census was taken. In 2011, it was the 15thCencus of India.

The sex ratio of West Bengal is 950, Madhya Pradesh is 931, Uttrakhand is 963 and Jammu and Kashmir is 889. The correct order is Uttarakhand West Bengal - Madhya Pradesh Jammu and Kashmir. Therefore, the correct option is (c).

In the presence of inter-molecular hydrogen bonding, ice forms hexagonal three-dimensional crystal lattice in which almost half the space is unoccupied. The density of water is roughly 1 gram per milliliter.

However, it changes with the temperature change. On melting of ice, some of the hydrogen bonds are broken and some of the space is occupied by water molecules. Hence, liquid water is a higher density than ice. Therefore, the correct option is (b).

Heavy water (D₂O) is composed of deuterium and therefore is called deuterium oxide. Deutrium is a hydrogen isotope with a mass doubles that of ordinary hydrogen, and oxygen. Its molecular mass is 20.02 grams/mole.

The atomic mass of deuterium is greater than that of protium and hence it has a greater molar mass than regular water. This causes heavy water (D₂O) to have slightly different chemical and physical properties when compared to H₂O. It exists as an odourless liquid at room temperatures. Therefore, the correct option is (c).

The term, quarks was coined by the particle pioneer, Murray Gell-Mann in 1968. A quark is a type of elementary particle and a fundamental constituent of matter. Murray was awarded the Nobel Prize in Physics the following year.

He was born on 15 September 1929 in New York City and died at the age of 89. The first two quarks were with different electric charges and scientists named them up and down. Therefore, the correct option is (b).

A type of radioactive decay in which a beta particle is emitted from an atomic nucleus while transforming the original nuclide to an isobar of that nuclide is called beta decay. In this process, the atomic number increases by 1 and the mass number remain the same.

A change in mass number is the emission of a Gamma-ray from a nuclear isomer or metastable excited state of an atomic nucleus. The mass number does not change as all the protons and neutrons remain in the nucleus unchanged. Therefore, the correct option is (c).