Question Discussion & Solution

The correct answer is New Delhi.

• The "Indian Sports Summit - Fitness: $ 10 Billion Opportunity" was organized in New Delhi.

Key Points

• The event was launched by Prime Minister Narendra Modi.
• The aim event was focused on driving objective of ‘Sports and Industry’ by various initiatives, advocating for new policies for the sector, encourage investments in the sector of sports, create a roadmap in encouraging fitness programmes in school education and industry participation in the FIT INDIA Movement.
• Current Youth Affairs and Sports Minister is Mr Kiren Rijiju.

The correct answer is Jaipur.

• The Legislative Assembly of Rajasthan is located at Lalkothi, Jaipur.

Key Points

• Legislative Assembly of Rajasthan ​
  • The Legislative Assembly of Rajasthan is located at Lalkothi, Jaipur.
  • Presently, it comprises 200 members who are directly elected from single-seat constituencies.
  • The building of the Rajasthan Legislative Assembly is one of the most modern legislature complexes in India. Situated in a sprawling 16.96 acres campus - in Jyoti Nagar, Jaipur.
  • Work on this project commenced in November 1994 and was completed in March 2001.
  • The exterior of the building has been provided with famous traditional features of Rajasthan such as Jharokas, Chhatries, Kamani, Baradaries, Arches, Todies, etc. in Jodhpur and Bansi Paharpur stone.
  • The interior entrance lounges have been decorated in the famous Rajasthani traditional art on walls and ceilings representing the traditional art of four regions of Jaipur, Shekhawati, Marwar, and Mewar. 

Additional Information

• 15^th Rajasthan Legislative Assembly
  • Governor, Rajasthan
    • Shri Kalraj Mishra
  • Speaker, Rajasthan Legislative Assembly
    • Dr. C.P. Joshi
  • Chief Minister Rajasthan
    • Sh. Ashok Gehlot

1) H 12D → H = 8; D = 4; hence 8 + 4 = 12

2) A5D → A = 1; D = 4; hence 1 + 4 = 5

3) C16L → C = 3; L = 12; hence 3 + 12 = 15 which is not equal to 16.

4) I22M → ​ I = 9; M = 13; hence 9 + 13 = 22.

Hence C16L is the odd one out.

The correct answer is Lead and Tin.

Key Points

• Soldering is the process of joining two metal objects together by a third soft metal alloy which is called solder.
• Solder is a metal alloy that melts at a lower temperature than the metals being soldered.
• A commonly used alloy is solder, which is an alloy of tin (Sn) and lead (Pb).
• The alloy of tin-lead solder is a mixture of 63% tin and 37% lead. 63/37 solder melts at 183°C.
• So, Alloy of tin (Sn) and lead (Pb) is used for welding electrical wire together.

Additional Information

• Element Tin (Sn) belongs to Group 14 of the periodic table.
  • Atomic Number - 50
  • Atomic Mass  - 118.710 amu.
• Element Lead (Pb) belongs to Group 14.
  • Atomic Number - 82
  • Atomic Mass - 207.2 amu.

Concept

Size of element:

• The atomic size of an element is determined by the atomic radius of an element.
• Atomic radius is the distance between the center of an atom to its outermost (valence) shell having electrons.
• The atomic size of any element is mentioned in form of Atomic radius.
• Unit of Atomic radius is Amstrong (A^o).

Valency of an element:

• Valency is the combining capacity of an atom of an element.
• It is otherwise the valence electrons an atom uses to form a chemical bond.

The molar mass of the element:

• It is defined as the mass of one atom of an element.
• The unit is g/mol.
• For all substances, the molar mass of in g/mol is numerically equal to the formula mass in atomic mass units.

Explanation:

• The maximum number of univalent atoms that may combine with an atom of the element is the Valency.
• The valency of an element is always an integer.
• With regard to covalent compounds, the term valency describes the number of bonds usually formed by each element.
• In ionic compounds, often, the number of positive or negative charges that appear on the atom in its ion helps to state its valency.
• The chemical behavior is largely influenced by the valency of the element.

Hence, Valency of an element is the property that determines an element's chemical behavior.