Question

Example of residuary subject is _____
A. Trade
B. Computer software
C. Commerce
D. Irrigation

Answer 1

Hint: Residuary subjects are those which are not listed in either of the Union or state lists mentioned in the Constitution of India.

Complete answer:
Functions and powers are allocated between the states and the union according to the seventh schedule of the constitution of India. The seventh schedule consists of three lists namely:-
Union list
State list
Concurrent list

The union list consists of 97 subjects on which the central government or the Parliament can make laws.
The state list contains 66 subjects of local or state importance on which the state governments can make laws. The concurrent list contains 47 subjects on which both the Parliament and the state legislatures can make laws.
Matters which are not allocated to any of the above three lists are known as residuary subjects. The right to make laws on these subjects is known as residuary powers. The parliament has the powers to make any law with respect to any matter which is not a part of the concurrent list or the state list. According to our constitution, the Union Government has the power to legislate on the residuary subjects.

Trade is part of the union list and not a residuary subject.
Computer software isn't part of any of the three lists mentioned in the constitution and hence is a residuary subject. Commerce is also part of the union list and hence not a residuary subject. Irrigation is also not a residuary subject.

So, the correct answer is option B.

Note:Other examples of residuary subjects are computer technology, hardware and software, internet regulations etc.the scope of the residuary powers is restricted. The rationale behind the residual power is to enable the parliament to legislate on any subject, which has escaped the scrutiny of the house.