The Silicon Valley of India is located in Bengaluru. Bengaluru is the capital of the Indian state of Karnataka. It is also called Silicon Valley. Bengaluru has been the leading source of India's information technology exports, hence it is called the Silicon Valley of India. This is the headquarters of India's major technical organizations ISRO (ISRO), Infosys and Wipro. 

In the given Articles, Article 19 belongs to different category as it comes in the category of Right to Freedom. Article 19 deals with the Protection of certain Rights such as

(a) freedom of speech and expression

(b) To assemble peaceably and without arms

(c) To form association or unions

(d) To move freely throughout the territory of India

(e) To reside and settle in any part of the territory of India

(f) to practice any profession, or to carry any occupation, trade, and business.

Scientists from Raman Research Institute (RRI), an autonomous institute under the Department of Science & Technology, have found a new way of inferring the state of a system (both two-dimensional qubits as well as higher-dimensional “qubits”) from an interference pattern, which they term ‘Quantum State Interferography’.

This method of characterisation called Quantum State Interferography can help make such manipulations simpler so that several crucial operations in quantum technologies become less cumbersome. So, statement 1 is correct.

The setup requires only two interferometers from which many interferograms can be obtained to reconstruct the state. So, statement 3 is correct.

A qubit is a 2-dimensional quantum system and requires usually 2 complex numbers to be determined towards state estimation. So, statement 2 is not correct

Adani Ports and Special Economic Zone (APSEZ)'s composite scheme to acquire Sarguja Rail Corridor Pvt Ltd (SRCPL) has been approved by the National Company Law Tribunal (NCLT). It will be effective from the appointed date of April 1, 2021. Once consolidated, SRCPL will add Rs 450 crore or five percent of APSEZ's total Ebitda (earnings before interest, tax, depreciation, and amortisation).

Golden Quadrilateral National Highway connects the four metro cities of India.

The Golden Quadrilateral is a national highway network connecting most of the major industrial, agricultural and cultural centres of India. It forms a quadrilateral connecting the four major metro cities of India, viz., Delhi, Kolkata, Mumbai and Chennai.

Dharwar Rock System is special because it is the first metamorphic sedimentary rock in India. They are named the Dharwar system because they were first studied in the Dharwar region of Karnataka. But they are also found in Aravallis, Tamil Nadu, Chotanagpur plateau, Meghalaya, Delhi, and the Himalayas region. The Dharwar rocks are rich in iron ore, manganese, lead, zinc, gold, silver, etc

• The Champions series containing gold mines lie within this system. This Champion system is named after the Champion reef in the Kolar Gold Fields occur in Kolar and Raichur district. The Kolar Gold Fields contain one of the deepest gold mines in the world.
• Chilpi Series is occur in Balaghat and Chhindwara of Madhya Pradesh. It is rich in grit, Phyllite, quartzite, green stones and magniferous rocks.
• Rialo Series stretch over in Delhi (Majnu-ka-Tila) to Alwar (Rajasthan). It is also known as the Delhi series. It is rich in Marble. Makrana & Bhagwanpur known for high-quality marbles belong to this series.
• Iron-ore Series occur in Singhbhum (Jharkhand), Bonai, Mayurbhanj and Keonjhar district (Orissa). It is rich in Iron ore deposits which spread is over a 65 km long belt and approximately 3000 million tons of Iron-ore Reserves.

URL stands for Uniform Resource Locator and is used to specify addresses on the World Wide Web. A Uniform Resource Locator (URL), colloquially termed a web address, is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it.

Ebony and rosewood trees are found in the areas of rainfall more than 200 cm. Tropical rainforests are found in areas of heavy rainfall. They are called evergreen forests because their trees do not shed leaves in a particular period during the year. Thus, they remain green throughout the year. Ebony, mahogany and rosewood are the tree varieties found in these forests. In India, they are found in the Western Ghats and parts of Odisha and Andaman and Nicobar Islands.

The Annapurna milk scheme main features:

• ​To ensure a regular supply of fresh milk to the school students.
• It was launched by former CM Raje at the government school in Jaipur. So statement 1 is true.
• Under the scheme, students of Class I to V will get 150 mL and those in class VI to VIII will get 200 mL of hot milk thrice a week. So the statement 3 is true.
• With an aim to increasing enrollment in government schools, the Annapurna Milk Scheme in which students will get a glass of milk three a week.
• Every student of class I to V will be provided 150 ml and students of class VI to VIII will be provided 200 ml of milk. So statement 2 is true.
• The students will be given milk immediately after the school assembly.

Chhau is a style performed exclusively by men from the triangular area where Bihar, Bengal and Orissa meet. So, Statement 1 is correct. This is the tribal belt of India home to the tribal groups of Bhulya, Santhals, Mundas, Hos and Oraons.

Chhau Mask: The masks they use vary depending on the style of Chhau practised, Seraikella Chhau or Purulia Chhau. In the third form of Chhau, Mayurbhanj Chhau, masks are not worn. The Chhau mask is made of potters' clay (Matti Ghada) over which layers of muslin are pasted followed by paper (kagaz chitano). So, Statement 2 is incorrect. Using a delicate wooden chisel, different features of the mask are polished the nose, eyes, ears, chin and lips. Once it is dried it is painted in pastel colours (kahij lepa). Then the mask is separated from the clay model and fully dried in the sun.  Finally, the mask is worn with a highly decorated head-dress of tinsel, pearls, coloured paper and artificial flowers. The masks acquire a whole range of expression with every twist and turn of the body. Accompanied by the huge dhamsa drums and two energetic dhol players who provoke and encourage the dancers. The Chhau dancer makes lightning body movements known as chamak. So, Statement 3 is correct.