UPSC CISF AC (Exe) LDCE 2020: previous year paper (107 questions)

• 107 questions
• 128 minutes
• +1 right · no negative marking
• 0 students ranked

107 questions from this paper (of the 114 we have; questions we could not answer reliably are left out) in the paper's order. Answers come from our checked MCQ bank or, where the paper had no answer key, from an AI check: confirm with the commission's official key.

The daily quiz, the sectional tests and the latest previous year paper of each state are free.

First questions

1. A rod with circular cross-section of radius 12,5 mm is stretched such that its cross-section remains circular. If after stretching the rod its length becomes four times the original length, then what is the radius of the new cross-section ?
2. Container I contains a mixture of 2 liters of oil and 3 liters of water. Container II contains a mixture of 6 liters of oil and 7 liters of water. 50% of the mixture of container I and 25% of the mixture of container II are transferred to container III. What is the proportion of oil and water in container III ?
3. Two teams named A and B do business together and their shares are in the ratio of 2:1. Team A has got three members Al, A2 and A3 whose shares are in the ratio of 1: 2:3. Team B has got four members B1, B2, B3 and B4 whose shares are in the ratio of 1:2:3: 4, If the actual share of B3 is < 2,25,000, then what is the actual share of A2?