Question Discussion & Solution

Given pair is Thing: Main element

Prime constituent of pen is Ink

Similarly, prime constituent of Cigarette is Tobacco

All except Yosemite National Park are in India. Yosemite National Park is in USA.

Systems software are programs that manage the resources of the computer system and simplify applications programming.

 Key PointsSystems software includes software such as the operating system, database management systems, networking software, translators, and software utilities.

Systems software can be categorized under the following:

• Operating system: Harnesses communication between hardware, system programs, and other applications.
• Device driver: Enables device communication with the OS and other programs.
• Firmware: Enables device control and identification.
  • Firmware is the operational software embedded within a flash, ROM, or EPROM memory chip for the OS to identify it.
  • It directly manages and controls all activities of any single hardware.
• Translator: Translates high-level languages to low-level machine codes.
  • A compiler is a computer program that translates computer code written in one programming language into another language.
  • The name "compiler" is primarily used for programs that translate source code from a high-level programming language to a lower-level language to create an executable
• software utility: Ensures optimum functionality of devices and applications.

Additional Information

• Word processor is a computer program used to write and revise documents, compose the layout of the text, and preview on a computer monitor how the printed copy will appear. For example, google docs, Microsoft word.

Hence word processor is not system software.

For alphabet: Increase by + 4

 D + 4 → H + 4 → L + 4 → P + 4 → T + 4 → X

For Number: Decrease number by - 4

23 – 4 → 19 – 4 → 15 – 4 → 11 – 4 → 7 – 4 → 3

Soil is one of the most important natural resources as mankind is dependent on soil for food. The soils of Rajasthan have developed under the arid and humid climate over the bedrocks of complex nature predominately through the process of Lateralization.

Classification: The old system of classification was developed by scientists (Thorpe & Smith) of the U.S Department of Agriculture in 1949. The classification is based upon differences in climate and mineralogy. As per this system, soils of Rajasthan can be classified into 8 types:

1. Desert Soils
2. Dunes and Associated Soils
3. Brown Soils
4. Sierozems
5. Red Loams
6. Hill Soils (Lithosols)
7. Saline Sodic Soils (Solonchaks)
8. Alluvial Soils/and Black Soils

Brown soil:

• Brown Soils Major area of these soils is in the catchment area of Banas River.
• Districts – Tonk, Bundi, Sawai Madhopur, Bhilwara, Udaipur, and Chittorgarh
• Annual Rainfall – 50 cm to 75 cm is sufficient for Kharif crops.
• Texture – Sandy loam to clay loam.
• Colour – Ranges from greyish brown to yellow-brown.
• They are rich in calcium salts but have poor organic matter
• The use of fertilizers becomes essential to get a good harvest
• As the groundwaters are saline, soils irrigate with these waters have accumulated salts
• Tank irrigated soils have also developed a problem of the high water table.
• Rabi crops are grown under irrigation.

Hence, option 1 is the correct answer.