Questions

Electrons orbit around the nucleus is correct about them.

Database provides necessary means to achieve this abstraction. By structure of a database we mean the data types, relations, and constraints that should hold on the data.

There are 13 colonies and are ruled by England.

The farthest north colony - Massachusetts

The farthest south colony - Georgia

The oldest colony - Virginia

The colony between the 2 parts of Massachusetts - New Hampshire

The Indian Space Research Organisation(ISRO) is planning its maiden mission to Venus and its second one to Red planet. The same was confirmed by the newly allotted budget to the department of space, which mentions provisions for 'Mars Orbiter Mission II and Mission Venus'.

Udaipur, a city in the state of Rajasthan which was named after the Maharana Udai Singh - II, is known for its beautiful artificial lakes around the city and lavish royal residences.

Thus, Udaipur nickname is City of Lakes in India.

Anything that has Mass and takes up Space is called Matter.

Matter has some mass and occupies some space. Mass means the amount of matter in an object. Space occupied by an object is called its Volume.

The Study of Matter and and how matter changes is called Chemistry.