Question Discussion & Solution

The correct answer is Desktop.

• The first screen which appears when windows are loaded is called Desktop.

Key Points 

• Desktop
  • The first screen which appears when windows are loaded is called Desktop.
  • As soon as we open the computer we come across the Windows welcome screen which displays many small pictures on the screen of the monitor.
    • This screen is known as the desktop.
  • The small pictures on the screen are known as icons.

Additional Information

• File Folder
  • ​A file is the common storage unit in a computer, and all programs and data are "written" into a file and "read" from a file.
  • A folder holds one or more files, and a folder can be empty until it is filled. 
• Recycling Bin
  • ​A recycling bin (or recycle bin) is a container used to hold recyclables before they are taken to recycling centers. 
  • Recycling bins exist in various sizes for use inside and outside homes, offices, and large public facilities.
• Recently Added Screen
  • ​A typical “Recently Added” section looks like at the top of the Start menu app list.
  • It's a small area that shows the names and icons of recently installed apps.

The correct answer is Hydrogen.

Key Points

• Hydrogen has atomic number 1 and is placed in group 1 along with alkali metals.
• It is the first element in the periodic table.

​Additional Information

• Hydrogen was discovered by Henry Cavendish.
• Hydrogen gas is called the fuel of the future.
• The most abundant element in the universe is Hydrogen.
• The most abundant element on earth's crust is Oxygen.
• Hydrogen is the 'lightest element' in the periodic table.
• Lithium is the 'lightest metal' in the periodic table.

The correct answer is Ajmer.

Key Points

• The first cotton mill was established in Ajmer.

Additional Information

• Cotton cloth is one of the most developed industries in India.
• It is an important and ancient industry.
• In Rajasthan, the first textile mill-Krishna Mills Beawar in Ajmer- was set up in 1889.
• Producing high-quality cotton clothes is the prestigious tradition of the country.

• In SQL, the function - avg, min, max, sum, count is called as aggregate function.
• Aggregate functions return a single value after calculating from a group of values.
• avg() function returns the average values, max() returns the maximum value, count() finds the number of rows that matches the specified condition, min() returns the minimum value, Max() returns the maximum value. sum() returns the sum of values.

Example:

SELECT AVG(salary

FROM employees

GROUP BY department_id;

All are mammal except Lizard.