$$ \text { With reference to India, consider the following pairs: } $$

Consider the following subjects under the Constitution of India:

I. List I-Union List, in the Seventh Schedule

II. Extent of the executive power of a State

III. Conditions of the Governor's office

For a constitutional amendment with respect to which of the above, ratification by the Legislatures of not less than one-half of the States is required before presenting the bill to the President of India for assent?

With reference to the Indian polity, consider the following statements:

I. The Governor of a State is not answerable to any court for the exercise and performance of the powers and duties of his/her office.

II. No criminal proceedings shall be instituted or continued against the Governor during his/her term of office.

III. Members of a State Legislature are not liable to any proceedings in any court in respect of anything said within the House.

Which of the statements given above are correct?

Consider the following activities:

I. Production of crude oil-free

II. Refining, storage and distribution of petroleum

III. Marketing and sale of petroleum products

IV. Production of natural gas

How many of the above activities are regulated by the Petroleum and Natural Gas Regulatory Board in our country?