Question Discussion & Solution

The correct answer is All of the above.

Key Points

• The major factors responsible for Desertification such as:
  • High temperature
  • High wind velocity.
  • Low vegetation.
  • High rainfall.
  • Overgrazing.
  • The exploitation of natural resources.
  • Soil pollution.
  • Climatic variability.

Additional Information

• The Thar desert is also known as The Great Indian Desert.
• It is spread over four states in India:
  • Punjab
  • Haryana
  • Gujarat
  • Rajasthan
• Thar Desert of Rajasthan, also known as the Great Indian Desert is a large arid region in the northwestern part of the Indian subcontinent and forms a natural boundary running along the border between India and Pakistan with an area of more than 100,000 km.
• It extends from the Sutlej river and is surrounded by the Aravali ranges on the east, on the south by the salt marsh known as the Great Rann of Kutch.
• The Annual Average rainfall is around 20-50mm.

Explanation:- 

• Oxidation is a chemical reaction in which oxygen is added to a substance or hydrogen is removed from the substance. The oxidizing agent is the chemical compound that provides oxygen or removes hydrogen from the reactants. Oxidizing agents are also known as Oxidant or Oxidizer. 
• Here, Aluminium is the only metal that forms a protective layer of its own oxide Al₂O₃. This Aluminium Oxide layer serves as a barrier and prevents the element Aluminium from further corrosion.

Additional Information

•  Gold (Au):- Gold is a noble metal, it belongs to group 11 and it is least reactive. It shows +1 and +3 oxidation states.
• Silver (Ag):-  It is a white lustrous element of group 11. Being a noble metal it is less reactive in nature. Silver is a good conductor of electricity.
• Aluminum (Al):- Aluminium is a metal from group 13, It is a light-weighted silvery metal with 3+ valency. Common Oxidation states shown by Aluminium is +1, +2, +3. 
• Iron (Fe):- Iron is a highly reactive metal, It reacts with the oxygen present in the air very easily and forms Iron oxides like FeO, Fe₂O_3, Therefore, Iron undergoes rusting

 .Hint :- Au, Ag, both are  less reactive in nature, Iron is highly reactive, whereas Al is reactive in nature but doesn't react with air due to the formation of Al₂O₃ 

The correct answer is Bundi.

• 'Navlakha' lake is located in Bundi.

Key Points

• Other lakes in Bundi
  • Kanak Sagar
    • ​Several migratory birds can be seen here.
  • Naval Sagar
    • ​Nawal Sagar Lake is an artificial lake that is a major tourist attraction.
  • Jait Sagar
    • ​It is located close to the Taragarh Fort.

​Additional Information

• Naulakha Bawdi:
  • Naulakha Bawdi was built in 1586 AD.
  • It was built by Patrani Premal Devi of Maharawal Assochan.
  • This step-well is located in the Dungarpur district of Rajasthan.​​​​​​​
  • Facts related to the Naulakha 
    • Naulakha Mahal - Udaipur 
    • Naulakha Lake - Bundi 
    • Naulakha Burj - Chittorgarh 
    • Naulakha Bawdi - Dungarpur 
    • Naulakha Gate - Ranthambore 
    • Naulakha Temple - Pali

All except 'Handle' are name of vehicles while 'handle' is the name of one of the parts of a vehicle.

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".