Question Discussion & Solution

The correct answer is Khejri.

Key Points
Khejri:

• It is known as Kalp Vriksha of desert.
• Prosopis cineraria is the scientific name.
• It was declared a state tree in the year 1983.
• It has a nitrogen-fixing tree which enhances the fertility of the soil.
• In 1988, the Indian Postal Department issued a Postal Stamp of paisa 60 on Khejri. 
• Khejri trees are found in the tropical thorny forest.

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.

Concept-

• The transparent curved surface which is used to refract the light and make an image of any object placed in front of it is called a lens.
• The lens whose refracting surface is upside is called a convex lens.
• The convex lens is also called a converging lens.
• The lens having refracting surface inward is called a concave lens.
• The concave lens is also called a diverging lens.

Explanation-

As we can see below, The concave lens is also called a diverging lens.

Hence option 2 is correct among all

The correct answer is Kanhaiya Lal Sethiya.

• Kanhaiyalal Sethia was a well-known Rajasthani and Hindi poet born in Sujangarh, Churu District of Rajasthan.
  • His "Dharti Dhoran Ri" is recognized as the anthem song of Rajasthan throughout the world. 

Additional Information

• Chandra Prakash Deval is a Rajasthani poet and translator. He is also the convener of Rajasthani Advisory Council of Sahitya Akademi.
  • He has received Padma Shri in 2011, the fourth highest civil honour given by the Government of India.
• Dr Bhagwati Lal Vyas was awarded Bihari Puraskar in 2015 for his anthology of Rajasthani poems ‘Katha Sun Aawe Hai Sabad’ published in 2010.
• Vijaydan Detha, also known as Bijji, was a noted Indian writer of Rajasthani literature.
  • He was a recipient of several awards including the Padma Shri and the Sahitya Akademi Award.

In the question figure, there are 2 square blocks. Half of both square blocks are shaded and the other half is blank. One of the square blocks has its left half shaded and another square block has its right half shaded. Thus, in the answer figure, the square block whose left half is shaded should have its right block shaded and the square block whose right half is shaded should have its left half shaded.

Therefore option 1, 2, and 4 gets eliminated.

Hence, the figure in option 3 is the correct answer.