Question Discussion & Solution

The correct answer is Rock Phosphate.

Key Points

• Jhamar Kotra mines are the largest reserve of phosphate in India.
• Jhamar Kotra huddled in the Aravali range in the southern part of Rajasthan.
• It is situated in the Udaipur district of Rajasthan.
• It is only the commercially exploitable rock phosphate deposit in the country.

Additional Information

• Minerals in production of which Rajasthan holds the monopoly in the country are
  • Lead and Zinc ores
  • Selenite 
  • Wollastonite 
  • Garnet​
• Rajasthan is a leading producer of Calcite, Gypsum, Bal Clay, Feldspar, Rock phosphate, Stealite, Red ochre.

• Rajasthan is the sole producer of Lead & Zinc (Pb & Zn), Selenite and Wollastonite.
• Rajasthan is also called Mineral's Museum.
• Rajasthan has 2nd position in terms of minerals availability.
• The almost entire production of Silver, Calcite and Gypsum in the country comes from Rajasthan.
• Rajasthan is also the leading producer of Ball Clay, Phosphorite, Ochre, Steatite, Felspar and Fire Clay in the country. 

Pattern followed is,

D + 6 = J

J + 5 = O

O + 4 = S

S + 3 = V

V + 2 = X

Hence, “O” is the correct answer.

1) × and ÷

Given statement: 46 ÷ 2 -­ 7 × 3 + 5 = 39

On interchanging the above signs,

46 × 2 ­- 7 ÷ 3 + 5

= 46 × 2 ­- 2.33 + 5

= 92 ­- 2.33 + 5

= 97 -­ 2.33

= 94.67 ≠ 39

2) ­- and ×

Given statement: 46 ÷ 2 -­ 7 × 3 + 5 = 39

On interchanging the above signs,

46 ÷ 2 × 7 -­ 3 + 5

= 23 × 7 -­ 3 + 5

= 161 ­- 3 + 5

= 166 ­- 3

= 163 ≠ 39

3) + and ×

Given statement: 46 ÷ 2 -­ 7 × 3 + 5 = 39

On interchanging the above signs,

46 ÷ 2 7 + 3 × 5

= 23 ­- 7 + 3 × 5

= 23 ­- 7 + 15

= 38 7

= 31 ≠ 39

4) + and ­-

Given statement: 46 ÷ 2 -­ 7 × 3 + 5 = 39

On interchanging the above signs,

46 ÷ 2 + 7 × 3 ­- 5

= 23 + 7 × 3 ­- 5

= 23 + 21 ­- 5

= 44 -­ 5

= 39

Key Points

• Gramin Gaurav Path is a major road construction program started by the state Government of Rajasthan and is implemented by Public Works Department (PWD). 
• Under the Gramin Gaurav Path project, the government aims to construct main Gram Panchayat roads in 33 districts in the Rajasthan state. 
• In the first phase, the government planned to construct 1720 km of roads in the 1972 gram panchayat.
• In the second phase, the government plan to construct 2098 km of roads in 2086 gram panchayat.
• The government has aims to construct roads in all villages that come under the main gram panchayat for hassle-free transport for villagers.  

Important Points

• The main objective of the Gramin Gaurav Path Scheme is to construct a Cement Concrete road and proper drainage at each Gram Panchayat headquarters with the purpose of creating a neat and clean environment.
• The program also aims to provide damage-free roads for commuters at each Gram Panchayat Headquarters.
• Rural villagers now easily travel to schools, hospitals, temples, farms, nearby villages, and towns because of the construction of good roads. 
• The Rajasthan government has approved Rs 1,115 crore for the Gramin Gaurav Path program

Additional Information

• Rajasthan is a state in northern India. 
• It covers 342,239 square kilometres or 10.4 per cent of India's total geographical area. 
• It is the largest Indian state by area and the seventh-largest by population
• Area: 342,239 km²
• Governor: Kalraj Mishra
• Capital: Jaipur 
• Population: 6.89 crores 
• Chief minister: Ashok Gehlot

The correct answer is Nitrification.

Key Points

• The process of conversion of ammonia into nitrate nitrogen is called nitrification.
• It is done in two steps- Nitrite formation, Nitrate formation.
• Nitrite formation- Ammonia are oxidized to nitrites by Nitrococcus, Nitrosomonas.

Additional Information

• The nitrogen cycle has four steps-
  • Nitrogen Fixation- Conversion of molecular nitrogen into the inorganic nitrogenous compound.
  • Ammonification- Conversion of the dead organic nitrogenous compound into ammonia.
  • Nitrification- Oxidation of ammonia into nitrates.
  • Denitrification- Nitrites or nitrates converts back into molecular nitrogen.