Question Discussion & Solution

The correct answer is 10.

• In India, the census is done after a gap of 10 years.

Key Points

• In 1872 AD, the first Census was done in India under the rule of Lord Mayo.
• The First Official Census in India was done in 1881 AD under Lord Rippon.
  • It was called First synchronised census.
• Since 1901, it has been taking place every decade.
• Census 2011, is the 15th census and 7th after independence.
• The slogan of Census 2011 is “Our Census, Our Future”.
• India was the first country to adopt family planning in the world.

The correct answer is Nahargarh Fort.

Key Points

• Nahargarh Fort:
  • It was built by the Kachwaha dynasty's Sawai Jai Singh in 1734 AD.
  • It is also known as Sudarshangarh Fort, which is the original name of Fort.
  • Its other names are- Jaipur's Crown, Palace's Fort, and Meethadi's Fort.
  • Sawai Madho Singh 2nd built 9 palaces for his 9 Paswan.
  • The name of Palaces are Suraj Prakash, Khushhal Prakash, Jawahar Prakash, Lalit Prakash, Chand Prakash, Anand Prakash, Lakshmi Prakash, Phool Prakash and Basant Prakash.
  • These Palaces were built in Victorian Style.

Additional Information

• Mawatha Lake is Situated In Amer Fort. 
  • it was built by Mirza Jai Singh in 1664 AD.

Logic:

Wall, Roof, and Beam are parts of a Room.

But, 

House is a collection of Rooms.

Important PointsBeam means a long, sturdy piece of squared timber or metal used to support the roof or floor of a building.

Hence, house is the odd one out.

Answer: Option 3

Concept:

Tree:

• A tree consists of nodes or vertices that store information and often are labeled by a number or a letter.
• A tree consists of directed edges or undirected edges or both.
• The number of subtrees of a node is called its degree.
• A leaf or a terminal node is a node of degree zero
• A node that is not a leaf is called an interior node or an internal node
• The degree of a node is the number of its children. The degree of a tree is the maximum degree of any of its nodes.

Ancestors of a node in a Tree: 

The ancestor nodes of a node are all parent nodes of that particular node.

Explanation: 

Consider the following Binary Tree 

Every node except the root node (A) has ancestors.

Hence in a tree, the only node that has no ancestors is the root node. (only one node possible)

Additional Information

Full Binary Tree: 

A full binary tree is a binary tree in which each node has exactly two or 0 children.

Complete Binary Tree:

A complete binary tree is a binary tree in which

1. except last level tree is completely filled.
2. The last level is filled from left to right.

Perfect Binary Tree: 

A perfect binary tree is a binary tree in which

1. all interior node or internal nodes has 2 children.
2. all leaves are at the same level.

Balanced Binary Tree: 

A Balanced Binary tree is a binary tree in which at any node height of the left subtree and right subtree do not differ by more than 1.

Important Points

1. A tree with n nodes has n - 1 edge.

2.  consider a nonempty binary tree with n0 leaves and n2 nodes of degree two (internal nodes). Then
n0 = n2 + 1
Applications of Trees: 
1. Huffman Coding
2. Evaluation of Arithmetic Expressions using Expression trees

Concept:

• Social evils or social issues are referred to any undesirable condition that is opposed by society or by a section of society.
• Some major issues are the caste system, poverty, dowry system, child labour, religious conflicts, etc.

Explanation:

Child labour:

• Child labour refers to the exploitation of children through any form of work that deprives children of their childhood.
• Any activity that interferes with their ability to attend regular school, and is mentally, physically, socially and morally harmful.
• Child Labour (Prohibition and Regulation) Act was enacted by the Ministry of Law and Justice on 30th July 2016.
• This Act amended the Child Labour (Prohibition and Regulation) Act, 1986.
• According to this Act:
  • No child shall be employed or permitted to work in any occupation or process.
  • Criteria of a child - A person below the age of 14 yrs.
• Although these laws do not consider all work by children as child labour.
• Exceptions include work by child artists, family duties and supervised training.
• Child labour is more prevalent in the cities where the standard of living is high and children have to work to support their families.

Dowry System:

• Dowry, or the custom of accepting gifts by the bridegroom’s parents from to bride’s parents as part of a marriage settlement.
• Dowry is the money, valuables, goods, estate or property which the bride party gives to the groom's party in exchange for marriage.
• The Dowry system is most prevalent in village areas where people are uneducated and a girl is considered as a burden on their family.
• With upcoming times, this practice is not that common in urban areas.
• To prevent the system of dowry, The Dowry Prohibition Act, 1961 was enacted.

Important Points

• Both child labour and the dowry system are social evils.
• They both are punishable offences.

Thus, 

Dowry and child labour are punishable offences: Correct

Dowry and child labour are necessary evils: Incorrect

Dowry and child labour are common in the villages: Incorrect

Dowry and child labour are common in cities: Incorrect