Match the special methods of shaft sinking with rock mass conditions and scope of application.

(A) A-S-3, B-R-2, C-Q-1, D-P-4
(B) A-P-2, B-Q-1, C-S-4, D-R-3
(C) A-R-3, B-P-1, C-S-2, D-Q-4
(D) A-S-4, B-Q-1, C-P-2, D-R-3

The bacteria in milk are destroyed when it ______ heated to 80 degree Celsius.

______ with someone else's email account is now a very serious offence.

If the radius of a right circular cone is increased by 50%, its volume increases by

The following sequence of numbers is arranged in increasing order: $1, x, x, x, y, y, 9, 16, 18$. Given that the mean and median are equal, and are also equal to twice the mode, the value of $y$ is

The old concert hall was demolished because of fears that the foundation would be affected by the construction of the new metro line in the area. Modern technology for underground metro construction tried to mitigate the impact of pressurized air pockets created by the excavation of large amounts of soil. But even with these safeguards, it was feared that the soil below the concert hall would not be stable.

From this, one can infer that

Students applying for hostel rooms are allotted rooms in order of seniority. Students already staying in a room will move if they get a room in their preferred list. Preferences of lower ranked applicants are ignored during allocation.

Given the data below, which room will Ajit stay in?

(A) P
(B) Q
(C) R
(D) S

The last digit of $(2171)^7 + (2172)^9 + (2173)^{11} + (2174)^{13}$ is

Two machines M1 and M2 are able to execute any of four jobs P, Q, R and S. The machines can perform one job on one object at a time. Jobs P, Q, R and S take 30 minutes, 20 minutes, 60 minutes and 15 minutes each respectively. There are 10 objects each requiring exactly 1 job. Job P is to be performed on 2 objects, Job Q on 3 objects, Job R on 1 object and Job S on 4 objects. What is the minimum time needed to complete all the jobs?

Out of the support categories given for an underground coal mine, identify the ‘active support’.