Question Discussion & Solution

1^st letter: Decrease by - 1

O - 1→ N – 1 → M - 1 → L – 1 → K

2^nd letter: increase by + 2

L + 2 → N + 2→ P + 2 → R + 2 → T

3^rd letter: Decrease by - 1

T - 1→ S – 1 → R - 1 → Q – 1 → P

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. 

The correct answer is Velocity, time, and acceleration.

The first equation of motion gives the relation between initial velocity, final velocity, acceleration, and time.

• First equation of motion is given as v = u + at
  • Where, v = final velocity
  • u = initial velocity
  • a = acceleration
  • t = time taken

• The first equation of motion gives the value of velocity acquired by the body at any particular point of time t.
• The second equation of motion is given as s = ut + ½at²
• It gives the value of distance (s) traveled by a body at a given time t.
• Third equation of motion is given as v² = u² + 2as
• This equation gives the velocity of the body in traveling the distance s.

The correct answer is Displacement.

Key Points

•  Displacement
  • When a body moves from one position to another, the shortest distance between the initial position and final position of the body along with direction is known as Displacement.
  • Its SI unit is a meter.
  • It is a vector quantity.
  • Displacement of the object can be positive, negative, zero.
  • Displacement of the object can never be greater than the distance traveled by it.
• When there is no change in an initial position and final position even after covering some path, then it is considered zero displacements.

Additional Information

• Distance
  • It is the actual path covered by a moving body irrespective of the direction in which the body travels.
  • Its SI unit is a meter.
  • It is a scalar quantity.
  • An odometer is used to measure the distance traveled by the vehicle.  
• Speed
  • The time rate of change of position of the object in any direction is called the speed of the object.
  • It is a scalar quantity.
  • Its SI unit is m/s.
  • Speed= Distance travelled/Time taken
• Frequency
  • It tells us how frequently an event occurs.
  • The number of complete waves produced in one second is called the frequency of the waves.
  • Hertz is the SI unit of Frequency. It is named in the honor of Rudolf Hertz.
  • 1 Hertz= 1 vibration per second.

Given series U, R, O, L, I, ?

We subtract 3 in each letter we get-

Hence, "F" is the correct answer.