Question Discussion & Solution

The correct answer is Subscript.

Key Points

• CTRL+EQUAL SIGN Apply subscript formatting.
• CTRL+SHFT+PLUS SIGN Apply superscript formatting.

Additional Information

• CTRL+SHFT+> Increase the font size.
• CTRL+SHFT+< Decrease the font size.
• CTRL+] Increase the font size by 1 point.
• CTRL+[ Decrease the font size by 1 point. 

The correct answer is Aravali Ranges.

• The oldest fold mountain ranges in the world is Aravali Ranges.

Key Points

• Aravalis are one of the world’s oldest fold mountains running in north-east to south-east direction from Delhi to Palampur in Gujarat. 
• It is an example of the relict mountain.
• Guru Shikhar is the highest peak of Aravali.
• The Aravalli Range dates back to times when the Indian Plate was separated from the Eurasian Plate by an ocean. 
• Three major rivers and their tributaries flow from the Aravalli, namely Banas, Sahibi and Luni.

Additional Information

• The Western Ghats are locally known by different names such as Sahyadri in Maharashtra, Nilgiri hills in Karnataka and Tamil Nadu and Annamalai hills, Cardamom hills in Kerala.
• The Himalayas are young fold mountains of the tertiary period, which were folded over the Tethys Sea due to inter-continental collision.
• They stretch from the Indus River in the West to the Brahmaputra River in the East.
• The Alps are the highest and most extensive mountain range system that lies entirely in Europe, and stretch approximately 1,200 km.

• Charles Robert Darwin,in his book “The Origin of Species”, gave the Theory of Evolution by Natural Selection.
• Gregor Johann Mendel, also known as the father of genetics, gave the Law of Inheritance.
• The theory of origin of life on earth proposed by Haldane was confirmed by the experiments conducted by Stanley L. Miller and Harold C. Urey in 1953.

The correct answer is specific guidelines for preparation of Gram Panchayat development plan and their effective implementation.

• Aapni Yojana Aapno Vikas:
  • It was started by Panchayati Raj department.
  • This scheme focuses on development plans for Gram Panchayat and their effective implementation.
  • It is a provision in the scheme that if any gram panchayat is successful in increasing their income, they will be rewarded with a 10 per cent increase.
  • It was formed in accordance with the 14th Finance commission.
  • It was scheme was initiated to provide the basic life necessities to the people belonging to gram panchayat.

Explanation:

Trend in metallic property:

• As we move along a period from left to right, the metallic character decreases. The elements which are at the extreme left of the periodic table are most metallic in nature and the elements at the right side of the periodic table are non-metals in nature.
• As we go down the group, the metallic character increases and the non-metallic character decreases.
• So, metals at the extreme left and bottom of the periodic table are most metallic in nature.

Reactivity:

• As the metallic character increases, the Ionisation potential decreases and the reactivity of the elements also increases.
• The most reactive metal is thus Cs (Cesium), situated at the bottom left corner of the periodic table.

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Hence, the most active metal known is Cesium.

• Francium is the element present at the bottom of the periodic table, but it is a lab-made element, and not naturally occurring, which makes Cs as the most reactive element.