1, 2 and 4 are correct while 3 is incorrect.
The Constitution of India establishes a federal system of Government.
It contains all the usual features of a federation, viz., two Governments, division of powers, written Constitution, supremacy of Constitution, rigidity of Constitution, independent judiciary and bicameralism.
However, the Indian Constitution also contains a large number of unitary or non-federal features, viz., a strong Centre, single Constitution, single citizenship, flexibility of Constitution, integrated judiciary, appointment of state governor by the Centre, all-India services, emergency provisions and so on.

Both the statements are incorrect.
Article 3 authorizes the Parliament to:
(a) form a new state by separation of territory from any state or by uniting two or more states or parts of states or by uniting any territory to a part of any state;
(b) increase the area of any state;
(c) diminish the area of any state;
(d) alter the boundaries of any state; and
(e) alter the name of any state.
However, Article 3 lays down two conditions in this regard: one, a bill contemplating the above changes can be introduced in the Parliament only with the prior recommendation of the President; and two, before recommending the bill, the President has to refer the same to the state legislature concerned for expressing its views within a specified period.
Article 2 empowers the Parliament to ‘admit into the Union of India, or establish, new states on such terms and conditions as it thinks fit’. Notably, Article 2 relates to the admission or establishment of new states that are not part of the Union of India.
Article 3, on the other hand, relates to the formation of or changes in the existing states of the Union of India. In other words, Article 3 deals with the internal re-adjustment inter se of the territories of the constituent states of the Union of India. -The President (or Parliament) is not bound by the views of the state legislature and may either accept or reject them, even if the views are received in time.

Statement 1 and 3 are correct while statement 2 is incorrect.
The Sugamya Bharat App is a simple to use Mobile App with an easy registration process, requiring only 3 mandatory fields, namely, Name, Mobile number and Email-id. Union Ministry for Social justice and Empowerment has launched the “Sugamya Bharat App”.
Registered users can raise issues related to accessibility being faced.
The App is made accessible for ease of use for persons with disabilities also with features such as font size adjustment, color contrasting option, text to speech, and having an integrated screen reader in Hindi and English.

Both the statements are correct.
The Cartagena Protocol on Biosafety to the Convention on Biological Diversity is an international agreement on biosafety as a supplement to the Convention on Biological Diversity effective since 2003.
The Biosafety Protocol seeks to protect biological diversity from the potential risks posed by genetically modified organisms resulting from modern biotechnology.

Both the statements are incorrect.
Palghat Gap is located between Nilgiri hills and Anaimalai hills.
New Moore Island is located in Bay of Bengal between India and Bangladesh.