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 Banganga ​.

Key Points

• Banganga River originates from the Bairath hills in Jaipur.
• It flows towards the south, through Ramgarh, up to the village of Ghat, then towards east through partly hilly and partly plain terrain in Dausa and enters Vair tehsil in Bharatpur.
• Its water spreads out into several channels in Bharatpur. 
• Banganga River Basin is located in the northeastern part of Rajasthan state with a total catchment area of 8,878.7 sq km. 
• It is bounded by Ruparail and Sabi in its north and the Shekhawati Basin in its west and the Gambhir and Banas River Basins in its south-southwest. 
• The eastern border of the basin is marked by the Yamuna River Basin in Uttar Pradesh. 
• Administratively, Banganga River Basin extends over parts of Alwar, Jaipur, Dausa, Sawai Madhopur, and Bharatpur Districts.
• The Right Bank tributaries of the Banganga rivers are:
  • ​Gumti Nala, and Suri rivers.
• The Left Bank tributaries of the Banganga rivers are:
  • Palasan and Sanwan rivers

Additional Information

• Chambal River: 
  • ​Chambal river is one of the cleanest perennial rivers of India.
  • It originates at Janapav, south of Mhow town, on the south slope of the Vindhya Range in Madhya Pradesh.
  • Chambal flows north-northeast through Madhya Pradesh, running for a time through Rajasthan, then forming the boundary between Rajasthan and Madhya Pradesh before turning southeast to join the Yamuna in Uttar Pradesh.
• Luni River:
  • ​Luni is a major west-flowing river that originates from the western slopes of Naga hills, at an elevation of 772 m in Ajmer district of Rajasthan, where it is known as the Sagarmati.
  • After passing Govindgarh, it meets its tributary Sarsuti, which originates from Pushkar Lake, and from then on it is referred to as Luni River.
  • The name Luni is derived from the Sanskrit word lavanavari (“salt river”) and is so-called because of its excessive salinity. 
• Mahi River:
  • ​Mahi River is one of the major interstate west-flowing rivers, along with the Tapti River and the Narmada River, of India. 
  • The total length of Mahi is 583 km.
  • The Mahi basin extends over states of Madhya Pradesh, Rajasthan, and Gujarat having a total area of 34,842 Sq.km. 
  •  It is bounded by Aravalli hills on the north and the northwest, by Malwa Plateau on the east, on the south by the Vindhyas, and by the Gulf of Khambhat on the west.

After reading statement and conclusion we say that -

i) All people who are good at dance are pianists. → False (We cannot say that all good dancer are pianists)

ii) Some people who are good at dance are pianists. → True ( As all pianists are good dancer means some of the good dancers are pianists) 

Hence, "Only conclusion ii) follows" is the correct answer.

The logic followed is:

L, M, X, Y and Z each having a different salary.

i) X is getting more salary than only M.

X > M

Important Points

As the word only is used this means X's salary is only greater than M.

ii) L is getting less salary than Y, who is not getting the highest salary.

Y > L but Y is not getting the highest. Y's salary is greater than L.

Mistake Points

Who is used for the second person in a connecting statement.

For example, in the above question : 

L is getting less salary than Y, who is not getting the highest salary.

Here, who is used for Y and not for L.

Thus combining the both we get:

Z > Y > L > X > M.

Thus Z is getting the highest salary.

Hence, the correct answer is "Z".

The correct answer is Fossil fuels.

Key Points

Non-Renewable Resources Examples

• Fossil Fuel
• Coal
• Rare earth elements
• Petroleum products
• Uranium

Thus, Fossil fuels are a non-renewable source of energy.

Additional Information 

Types of Renewable Energy

Solar Energy:

• ​The radiant light and heat energy from the sun is harnessed with the use of solar collectors.
• These solar collectors are of various types such as photovoltaics, concentrator photovoltaics, solar heating, (CSP) concentrated solar power, artificial photosynthesis, and solar architecture.
• This collected solar energy is then used to provide light, heat, and different other forms of electricity.

Wind Energy:

• The energy we get from winds is known as wind energy.
• For this, windmills have been used for hundreds of years to pump out water from the ground. We use large tall wind turbines that allow winds to generate electricity.
• The natural airflow on the surface of the earth is used to run the wind turbines.
• The most preferred locations for these wind turbines to be installed are the areas which and strong and have constant airflows on offshore and sites that are at high altitudes.

Hydroelectricity:

• According to statistics, hydroelectricity generated around 16.6% of the global energy resources and constituted about 70% of all the renewable electricity.
• This energy is another alternative source of energy that is generated by the construction of dams and reservoirs on the flowing water, the kinetic energy from the flowing water is used to run the turbines which generate electricity.
• Tidal power converts the energy of tides and Wave power which captures the energy from the surface of the ocean waves for power generation.
• These two forms of hydropower also have huge potential in electric power generation

Geothermal Energy:

• It is the energy that is generated from the thermal energy which is stored in the earth.
• The heat energy is captured on sources such as hot springs and volcanoes and this heat is directly used by industries for heating the water and other purposes.

Bio-Energy:

• This type of energy is derived from biomass which is a type of biological material derived from living organisms and plant-derived materials which are called lignocellulosic biomass.
• Biomass can be directly used via combustion to produce heat and indirectly it can be used to convert to biofuels.
• Biomass can be converted to other usable forms of energy such as transportation fuels like ethanol, biodiesel, and methane gas.