1. Supercomputer is a powerful computer in terms of data storage capacity, performance and data processing.

2. A supercomputer is a powerful computer that can process large amounts of data and computations very quickly.

3. Supercomputers perform copious amounts of mathematical calculations.

4. Supercomputers are used for a wide variety of applications, including meteorology, medical research, and nuclear weapons research.

Used by a search engine to find information.

1. Web crawling and web spiders

2. Indexing

1. In India, an e-Public Distribution System or e-Public Distribution System (ePDS) has been developed to deal with food shortage and through this, food grains are distributed to the poor people of the society at affordable prices.

2. The Centre's allocation of grains to the states depends on the availability of grains in the central stocks and the average grain purchased by the states in the last three years.

3. The main commodities available under this benefit are – wheat, rice, sugar and kerosene.

1. A web browser is software used to view websites.

2. When a user requests a web page from a particular website, the browser retrieves its files from the web server and then displays that page on the user's screen.

3. Browsers are used on multiple devices, including desktops, laptops, tablets, and smartphones.

4. Some of the famous internet browsers in the world are – Google Chrome, Microsoft Edge, Microsoft Internet Explorer, Mozilla Firefox, Opera, Apple Safari, and Amazon Silk.

1. MS to monitor all changes in the document. Track Changes features are used in Word 2010.

2. Track Changes is a way for Microsoft Word to keep track of changes you make to your text.

The following are required to file income tax return online:

PAN Card: It is a mandatory document that authenticates you as identity and address proof for filing income tax returns.

Aadhaar Card: This is an optional document that can be used as identity proof.

Form 16: This is a certificate that shows your income and deductions. Your employer provides you with Form 16.

Bank account details: You will use your bank account to pay your return.

Copy of previous year's return: A copy of the previous year's return is also required.

Internet Connection: You will need an internet connection to file your return on the Income Tax Department website.

1. It is an international online software store developed by Google for Android devices.

2. Google Play is an online store where people can find their favorite applications, games, movies, TV shows, books, and more.

3. There are 2 million applications and games available for billions of people in the world.

4. So far, developers have earned more than $120 billion from these.