Born as Margaret Elizabeth Noble but famously known as Sister Nivedita, a European, tirelessly worked for the Indian national movement and was a harsh critique of British polices.

* Kol tribal movement against Britishers happened in 1829-1839 by indigenous people of Chotanagpur. Other tribal people like Oraon, Santhals also supported Kol rebellion. The rebellion was basically against corrupt and exploitative policies of Britishers regarding forests. Tribal people were made to evacuate forests, restrictions were imposed on forests products and plant cutting; further exploitative laws and policies against tribes ignited Kol rebellion.

• The average period length of El Nino is 5 years.

• A new type of El Nino called El Nino Modoki appeared recently. Normal El Nino results in diminished hurricanes in the Atlantic Ocean but El Nino Modoki results in a greater number of hurricanes with greater frequency.

* As per 2011 Census Data :-

* Delhi – 11,3202

* Chandigarh – 9,2583

* Pondicherry – 2,5474

* Daman and Diu – 2,1915

* Lakshadweep – 2,149

* Therefore, the correct descending order of States/UTs on the basis of density of population is – Chandigarh, Pondicherry, Daman-Diu & Lakshadweep.

● U-233 – It is used in experimental nuclear reactors. It does not exist naturally.

● U-234 – It is used in the making of nuclear weapons and nuclear fuels. Its natural abundance is 0.0054% approx.

● U-235 – It is used for the production of atomic energy. Its natural abundance is 0.711%.

● U-238 – It is the most common isotope of uranium found in nature. This isotope is used in Breeder Reactors for its neutron capture ability. Its natural abundance is 99.284%.

Mandamus is a command issued by the court to a public officer asking him to perform his official duties that he has failed or refused to perform. It may be a command to do an administrative action or not to take a particular action, and it is supplemented by legal rights. It can also be issued against any public body, a corporation, an inferior court, a tribunal or government for the same purpose.

Directive Principles of State Policy (DPSP) are the ideals and morals which the State should follow and keep in mind while formulating policies and laws for the country. The DPSP concept has been taken from the Irish Constitution. Directive Principles of State Policy (DPSP) has been included in Part IV of the Constitution of India from Article 36–51. They are non-justiciable in nature.

The Directive Principles are classified on the basis of their ideological source and objectives:-

* Socialist Principles-Article 38, 39, 38A. 41, 42, 43, 43A, 47

* Gandhian Principles- article 40, 43, 43B, 46, 47, 48

* Liberal and Intellectual Principles- article 44, 45, 49, 50, 51

The correct order is-

Y. K. Alagh - 1979

D. T. Lakdawala - 1993

Suresh Tendulkar - 2009

C Rangarajan - 2014

The term ecology is derived from the Greek word ‘oikos’ meaning ‘house’, combined with the word ‘logy’ meaning the ‘science of’ or ‘the study of’. A German zoologist Ernst Haeckel, who used the term as ‘oekologie’ in 1869, became the first person to use the term ‘ecology’. He further went on to define ecology as a scientific study of the interactions of organisms with their physical environment and with each other.