72.
By the early 1950s the US and the USSR were already making thermonuclear weapons hat had a yield between . . . . . . . .

75.
Identify the wrongly matched:

77.
Desk Officer System in the ministries of government of India had the following advantages:
1. Speedy disposal of cases
2. Dual records were available
3. Reduced expenditure
4. Qualitative improvement
Choose the correct answer from the options given below:

79.
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R):
Assertion (A): India is pursuing a positive asymmetry in South Asia.
Reason (R): India is strategically contained by China-Pakistan partnership.