Daily Quiz: UPSC Prelims Marathon – March 15, 2019

Paleomagnetism is the study of the record of the earth‘s magnetic field in rocks. Certain minerals in rocks lock-in a record of the direction and intensity of the magnetic field when they form. This record provides information on the past behavior of Earth’s magnetic field and the past location of tectonic plates. Paleomagnetic results shows that the Indian land mass has moved northwards.

The ozone hole is caused by the effect of pollutant in the atmosphere destroying stratospheric ozone. During the Antarctic winter something special happens to the Antarctic weather. Strong wind blowing around the continent form, this is known as the “polar Vortex” – this isolates the air over Antarctica from the rest of the world. Polar stratospheric clouds at about 80,000 feet altitude these are the highest flying of all clouds and only occur in the Polar Regions where the temperature in the upper atmosphere dips below minus 100F. They are sometime called “nacreous clouds” as they are coloured like the nacre of mother – of – pearl with coloured bands that move the position of cloud and observer. By the time spring arrives and the sun comes back after the long polar night, the ozone levels are severely depleted around the Antarctic continent causing the “ozone hole”. Unfortunately there then follows a particularly long period of high sunshine and long days, just to make effect of the ozone hole worse.

The emission gas contains carbon dioxide, water vapour, as well as substance such as nitrogen oxides (NOx). Sulphur oxides ( Sox), mercury tracesof other metals and for coal fired plants ,  fly ash. Solid waste ash from fired boilers must also be removed. Some coal ash can recycled for building materials.

Indira Gandhi Canal starts from the Harike Berrage at Sultanpur, a few kilometer below the confluence of Sutlej and Beas rivers in Punjab state and flows through Rajasthan. It receives water from Sutlej and Beas River.

Bokaro is situated at a point between Jamshedpur and Jharia coal fields and near to RAniganj coal fields in Jharkhand.

Indravati national park is situated in baster district of Chhattisgarh. Bandhav garh national park is located in umaria district of Madhya pardesh. Rajaji national park covers Haridwar, Dehradun and pauri Garhwal district of Uttarakhand.

Nilgiri, which literally means “Blue Mountain” in many language. The hills are separated from the Karnataka plateau to the north by the Moyar River and from the Anaimalai Hills and palni hills to the south by the Palghat Gap. The Nilgri district of Tamil Nadu lies within these mountains.