Explanation:

All these motions are crucial because all these involve making the executive/council of Ministers accountable to the legislature. Hence all three are exercised in Lok Sabha only.

Adjournment motion helps to draw the attention of the House to a recent matter of urgent public importance having serious consequences. . Rajya Sabha is not permitted to use adjournment motion because its adoption is regarded as a sort of censure of the government.

Censure motion is moved against an individual Minister or a group of Ministers for the failure to act or not to act for their policy.

No-confidence motion is moved in order to ascertain the confidence of the Council of Ministers in the Lok Sabha.