Question Discussion & Solution

The correct answer is Virus protection.

Functions of operating system are:

• Therefore, Virus Protection is not the function of OS. It is a function of Firewall and Antivirus.

The correct answer is Jaipur.

• The Legislative Assembly of Rajasthan is located at Lalkothi, Jaipur.

Key Points

• Legislative Assembly of Rajasthan ​
  • The Legislative Assembly of Rajasthan is located at Lalkothi, Jaipur.
  • Presently, it comprises 200 members who are directly elected from single-seat constituencies.
  • The building of the Rajasthan Legislative Assembly is one of the most modern legislature complexes in India. Situated in a sprawling 16.96 acres campus - in Jyoti Nagar, Jaipur.
  • Work on this project commenced in November 1994 and was completed in March 2001.
  • The exterior of the building has been provided with famous traditional features of Rajasthan such as Jharokas, Chhatries, Kamani, Baradaries, Arches, Todies, etc. in Jodhpur and Bansi Paharpur stone.
  • The interior entrance lounges have been decorated in the famous Rajasthani traditional art on walls and ceilings representing the traditional art of four regions of Jaipur, Shekhawati, Marwar, and Mewar. 

Additional Information

• 15^th Rajasthan Legislative Assembly
  • Governor, Rajasthan
    • Shri Kalraj Mishra
  • Speaker, Rajasthan Legislative Assembly
    • Dr. C.P. Joshi
  • Chief Minister Rajasthan
    • Sh. Ashok Gehlot

The correct answer is 4°C.

• Freezing of Water:
  • As water freezes, cold water (or ice formed) comes on the surface and warm water goes down.
  • Since the freezing temperature of the water is 0ºC or 273 K.
  • So water at the bottom should be at a higher temperature.
  • Water density at 4ºC is more than the density of water at 0ºC, hence the correct option is 4ºC.

​Key Points

• Reason of low temperature at bottom of the top layer:
  • This is due to the process of convection.
  • When the temperature of the water at the top layer reaches the freezing point, it is converted to ice.
  • But ice is lighter than water, so it will not sink to the bottom.
  • So there will be ice on the top surface and water would remain at the bottom of the lake. 

The correct answer is the formula bar.

Key Points

• By using the Defined names, the user can make the formulas much easier to understand and maintain.
• The user can define a name for a cell range, function, constant, or table. With the practice of using names in the workbook, the user can easily update, audit, and manage these names.
• The user Defined names will appear in the formula bar. 

Additional Information

• Steps to define names from a selected range
  • Select the range you want to name, including the row or column labels.
  • Select Formulas > Create from Selection.
  • In the Create Names from Selection dialog box, designate the location that contains the labels by selecting the Top row, Left column, Bottom row, or Right column check box.
  • Select OK.
• Steps to use names in formulas
  • Select a cell and enter a formula.
  • Place the cursor where you want to use the name in that formula.
  • Type the first letter of the name, and select the name from the list that appears.
  • Or, select Formulas > Use in Formula and select the name you want to use.
  • Press Enter.
• How to manage names in your workbook with Name Manager
  • On the Ribbon, go to Formulas > Defined Names > Name Manager. You can then create, edit, delete and find all the names used in the workbook. 

The correct answer is Copper and Tin.
Key Points

• Bronze
  • Bronze is an alloy traditionally composed of copper and tin.
  • Bronze is of exceptional historical interest and still finds wide applications.
  • It was made before 3000 BC, though its use in artifacts did not become common until much later.
  • The proportions of copper and tin varied widely (from 67 to 95 percent copper in surviving artifacts), but, by the Middle Ages in Europe, certain proportions were known to yield specific properties.
  • An alloy described in an 11th-century Greek manuscript in the library of St. Mark’s, Venice, cites a proportion of one pound copper to two ounces of tin (8 to 1), approximately that used for bronze gunmetal in later times.
  • Some modern bronzes contain no tin at all, substituting other metals such as aluminum, manganese, and even zinc.

Additional Information

• Copper and Silver
  • The best-known copper-silver alloy is sterling, which is 92.5 percent silver and 7.5 percent copper.
  • In England sterling, silver is traditionally identified by the hallmark of a lion passant.
  • Coin silver is an alloy of 90 percent silver and 10 percent copper.
  • For jewelry and ornaments, 85–90 percent silver (and the balance copper) is frequently used.
  • Dental alloys of 60–70 percent silver, 18–25 percent tin, 2–14 percent copper, and 0.5–2 percent zinc are amalgamated with varying quantities of mercury to form the filling materials for cavities in teeth.
• Copper and zinc
  • Brass is an alloy of copper and zinc, of historical and enduring importance because of its hardness and workability.
  • The earliest brass was called calamine brass, which dates to Neolithic times.
  • It was probably made by the reduction of mixtures of zinc ores and copper ores.
  • In ancient documents, such as the Bible, the term brass is often used to denote bronze, the alloy of copper with tin.
• Copper and Lead
  • Leaded bronzes contain from 4 to 25 percent lead plus additions of copper and tin, and some copper-lead bearing alloys contain up to 40 percent lead.
  • All these bearing alloys are sufficiently soft so that lubrication failure does not result in damage to the bearing.
  • Lead-based bearing alloys are also known as lead-based babbitt metals or white metals.
  • These are usually antimonial lead with widely variable additions of tin or copper (or both) and arsenic to increase strength.
  • One such alloy is commonly used for railroad-car journal bearings, contains 86 percent lead, 9 percent antimony, and 5 percent tin.
  • Many alloys of lead and alkaline-earth metals, such as calcium and sodium, also are widely used as bearing materials.