Questions

Thermoplastic materials is a type of plastic material that can be cooled and heated several times without any change in their chemistry or mechanical properties.

Examples of Thermoplastic ::

• polyethylene,
• polypropylene,
• polyvinyl chloride,
• polystyrene,
• polybenzimidazole,
• acrylic,
• nylon and
• teflon

Each year, the World Meteorological Organisation (WMO), its members and the worldwide meteorological community around the world celebrate World Meteorological Day on 23rd March around a chosen theme. And this year the theme is "Understanding the cloud".

The American Planning Association (APA) has announced this year's international excellence award for the Bhubaneswar smart city project.

The award called Pierre L'Enfant International Planning Excellence Award 2017 will be given on May 8 in New York city.

This is the first time in the 50 years history of APA's annual award programme that an Indian city has been recognised for its planning efforts.

The energy sources that are constantly being replenished, such as sunlight, wind, and water. This means that we can use them as much as we want, and we do not have to worry about them running out. Additionally, renewable energy sources are usually much more environmentally friendly than fossil fuels. Overall, they release very few chemicals, like carbon dioxide, that can harm the environment.


Most of this energy comes from fossil fuels, such as coal, oil, and natural gas. These are nonrenewable energy sources, which means that if we use them all up, we can never get more during our lifetime. Fossil fuels also contribute greatly to global climate change by releasing carbon dioxide into the air when they are burned.

SQL statements are broadly classified into three. They are

1. DDL – Data Definition Language

DDL is used to define the structure that holds the data. For example, Create, Alter, Drop and Truncate table.

2. DML – Data Manipulation Language

DML is used for manipulation of the data itself. Typical operations are Insert, Delete, Update and retrieving the data from the table. The Select statement is considered as a limited version of the DML, since it can't change the data in the database. But it can perform operations on data retrieved from the DBMS, before the results are returned to the calling function.

3. DCL – Data Control Language

DCL is used to control the visibility of data like granting database access and set privileges to create tables, etc. Example - Grant, Revoke access permission to the user to access data in the database.