Explanation:
(B)
A person to be eligible for election as President should fulfil the following qualifications:
He should be a citizen of India.
He should have completed 35 years of age.
He should be qualified for election as a member of the Lok Sabha.
He should not hold any office of profit under the Union government or any state government or any local authority or any other public authority.
A sitting President or Vice-President of the Union, the Governor of any state and a minister of the Union or any state is not deemed to hold any office of profit and hence qualified as a presidential candidate.

Explanation:
(B)
The presidential proclamation imposing President’s Rule is subject to judicial review.
The satisfaction of the President must be based on relevant material.
The action of the president can be struck down by the court if it is based on irrelevant or extraneous grounds or if it was found to be malafide or perverse.
Judicial Review is one of the ‘basic features’ of the Constitution.

Explanation:

(D)

Article 1 describes India as a ‘Union of States’ which implies two things:

One, Indian Federation is not the result of an agreement by the states;

And two, no state has the right to secede from the federation.

The term ‘Federation’ has nowhere been used in the Constitution.

Explanation:

(A)

The time immediately following the Question Hour and laying of papers and before any listed business is taken up in the House has come to be popularly known as the `Zero Hour’.

As it starts around 12 noon, this period is euphemistically termed as `Zero Hour’.

For raising matters during the ‘Zero Hour’ in Lok Sabha, Members give notice between 8.30 a.m. and 9.00 a.m. every day to the Speaker stating clearly the subject which they consider to be important and wish to raise in the House.

Explanation:

(B) When any of the privileges, either of the Members individually or of the House in its collective capacity, is disregarded or attacked by any individual or authority, the offence is called a `breach of privilege’.

Contempt of the House may be defined generally as any act or omission which obstructs or impedes either House of Parliament in the performance of its functions, or which obstructs or impedes any Member or officers of such House in the discharge of his or her duty, or which has a tendency, directly or indirectly, to produce such results even though there is no precedent of the offence.