Both the statements are correct.
6th schedule deals with the administration of the tribal areas in the four northeastern states of Assam, Meghalaya, Tripura and Mizoram.
The governor is empowered to organise and re-organise the autonomous districts. The governor can appoint a commission to examine and report on any matter relating to the administration of the autonomous districts or regions. He may dissolve a district or regional council on the recommendation of the commission.

Both the statements are correct.
Article 356 of the Constitution of India gives President of India the power to suspend state government and impose President’s rule on any state in the country “if he is satisfied that a situation has arisen in which the government of the state cannot be carried on in accordance with the provisions of the Constitution”.
The imposition of the President’s rule requires the sanction of both the houses of Parliament. If approved, it can go on for a period of six months. However, the imposition cannot be extended for more than three years, and needs to be brought before the two houses every six months for approval.
A proclamation of President’s Rule may be revoked by the President at any time by a subsequent proclamation. Such a proclamation does not require parliamentary approval.

Both the statements are correct.
The President can exercise the power of pardoning:
• In all cases where the punishment or sentence is by a court martial;
• In all cases where the punishment or sentence is for an offence against any law relating to a matter to which the executive power of the Union extends;
• In all cases where the sentence is a sentence of death.
This power of pardon shall be exercised by the President on the advice of Council of Ministers.

Both the statements are correct.
The earthquake events are scaled either according to the magnitude or intensity of the shock. The magnitude scale is known as the Richter scale.
The magnitude relates to the energy released during the quake. The magnitude is expressed in numbers, 0-10.
The Richter magnitude scale is a scale of numbers used to tell the power (or magnitude) of earthquakes. Charles Richter developed the Richter Scale in 1935. His scale worked like a seismogram, measured by a particular type of seismometer at a distance of 100 kilometers (62 mi) from the earthquake.
The intensity scale is named after Mercalli, an Italian seismologist. The intensity scale takes into account the visible damage caused by the event. The range of intensity scale is from 1-12.

The islands of the Arabian Sea include Lakshadweep and Minicoy. These are scattered between 8°N-12°N and 71°E -74°E longitude. The entire island group is built of coral deposits. There are approximately 36 islands of which 11 are inhabited. The entire group of islands is broadly divided by the Elevene-degree channel, north of which is the Amini Island and to the south of the Canannore Island.