Question Discussion & Solution

CONCEPT:

• Frequency (f): The number of waves that pass a given point per second is called frequency.
  • The unit of frequency is vibration per second or Hertz.

• Time period (T): The time taken to complete one full oscillation or cycle by the Wave is called the time period.

  • The SI unit of the time period is second (s).

EXPLANATION:

• From the above table, it is clear that time is the physics quantity that has the same unit in both C.G.S and the M.K.S system.

Crane, swan and falcon are the birds whereas frog is not a bird.

The chemical substance present in bones and teeth is Calcium Phosphate or Ca₃(PO₄)₂.

• Calcium phosphate is fundamental to the formation of bone and teeth.
• It is essential for achieving optimal peak bone mass in the first 2–3 decades of life and for the maintenance of bone in later life.
• Bones:-
  • Bones are mostly made of collagen, a type of protein.
  • Calcium phosphate, a mineral, is the other main component of the bones.
  • Collagen gives the bones a soft framework, while calcium phosphate is what makes them hard and strong.
  • Bones are made of living tissues, so old bone tissue is broken down and removed, and then new tissue is created to replace the old.
• Teeth:-
  • Enamel – the hard, outer layer of your teeth – is made of minerals like calcium phosphate.
  • Enamel is harder than the bones. It's the hardest substance in the whole body.
  • However, unlike the bones, the teeth enamel doesn't contain any living tissues and so can't heal on its own.

The correct answer is Dungarpur.

• Dungarpur district of Rajasthan does not touch two States of India.

Key Points

• Dungarpur district is the third smallest district of Rajasthan.
  • It shares borders with Udaipur and Banswara districts.
  • The district consists of 5 tehsils Aspur, Dungarpur, Sagwara, Simalwara and Bchiwara.
  • Places of historic importance in Dungarpur are Juna Mahal, Udai Bilas Palace, Gaib Sagar Lake and Badal Mahal.

Additional Information

• Dholpur shares border with Bharatpur and Karauli district of Rajasthan
  • It also shares a border with Agra of Uttar Pradesh and Gwalior and Moreana of Madhya Pradesh.
• Bharatpur district touches the district of Alwar, Dholpur and Dausa of Rajasthan.
  • It also shares a border with the Mathura and Agra districts of Uttar Pradesh and Gurgaon district of Haryana.
• Hanumangarh shares its borders with Churu, Sri Ganganagar, Punjab and Haryana.

Given: MADRAS is coded as NBESBT.

Logic: Adding 1 to the positional values of the letter, as shown below:

Similarly,

Hence, CPNCBZ is the correct answer.