Question Discussion & Solution

The correct answer is Rajasthan.

Key Points

• Sati (Prevention) Act, 1987 is a law enacted by the Government of Rajasthan in 1987.
• It became an Act of the Parliament of India with the enactment of The Commission of Sati (Prevention) Act, 1987 in 1988.
• The Act seeks to prevent Sati, the voluntary or forced burning or burying alive of a widow, and to prohibit glorification of this action through the observance of any ceremony, participation in any procession, creation of financial trust, construction of a temple, or any actions to commemorate or honor the memory of a widow who committed Sati. 

Additional Information

• Sati was first banned under Bengal Sati Regulation, 1829.
• Bengal Sati Regulation, 1829 is also known as Regulation XVII.
• This Regulation XVII or Prohibition of Sati was passed by Lord William Bentinck. 

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

Explanation:

• The metallic property of the elements of the periodic table decreases when we move across the group whereas it increases when we go down the group, as we go down the number of electrons increases and thereby their distance from the nucleus increases. 
• This increase causes them to shed more electrons and thereby have a greater electropositive or metallic character. 

Among the given compounds Na shows maximum Metallic character. 

The correct answer is Vitamin A.

Key Points 

• Night blindness is the inability to see well at night or in poor lighting conditions. 
• Night blindness is also called nyctalopia.
• Night blindness is often caused by Vitamin A deficiency.
• Night blindness is also caused by nearsightedness or cataracts.
• Foods that provide Vitamin A are carrots, sweet potatoes, eggs, milk, milk products, etc. 

Additional Information 

The correct answer is Kannauj.

Important Points

Harshavardhana was an Indian Emperor, who ruled over the northern parts of India from 606 A.D to 647 A.D.

• His earliest capital was Thaneswar, present-day Haryana.
• After his accession, King Harshavardhan united the two kingdoms of Thanesar and Kannauj.
• He also shifted his capital from Thanesar to Kannauj.

Additional Information

In the 7th Century CE, the capital of Harshavardhana's Empire was Kannauj.

• In general, there was prosperity within the empire.
• Agriculture, industries and trade, both internal and external, were in a flourishing condition.
• Cities like- Peshawar and Taxila in the North-West were, of course, destroyed by the invasions of the Hunas and Mathura and Pataliputra had lost their previous significance, but Prayag (Allahabad), Banaras and Kannauj were prosperous cities within the empire.
• In the 7th century CE, the capital city, Kannauj was an extensive, prosperous and well-protected city. 
  • It had large buildings, beautiful gardens and swimming-pools. It was inhabited by the rich, cultured and highly learned people.