Civil Services Aptitude Test (CSAT)

X travels 6 km on a bicycle with average speeds of 5 km per hour, 10 km per hour and 4 km per hour during the first 1 km, the next 2 km and the remaining 3 km, respectively. Y travels the same distances with average speeds of 4 km per hour, 10 km per hour and 5 km per hour, respectively. How many minutes early will Y complete the journey if both X and Y start at the same time?

X, Y and Z jump forward 4', 6' and 5', respectively. At 8 AM, they all land on mark 199'. How many times will they all land on the same mark (need not be at the same moment) between mark 195' and 1000', if all of them cross mark 1000' by 9 AM?

For 1/3 < x < y < 2, which of the following statements is/are always correct?
I. x + 1/x < y + 1/y
II. $\sqrt{1+y^2}/y < \sqrt{1+x^2}/x$

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Seven cubes are identical in shape. Out of these, the weight of each of the six cubes is equal and the weight of the remaining cube is less than the weight of any other cube. A balance is used to identify the lightest cube. What is the minimum number of attempts required to distinguish the odd cube with certainty?

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Match List-I with List-II and select the answer using the code given below the Lists :
List-I (Barrier to communication) :
A. Semantic
B. Cognitive
C. Organisational
D. Affective

List-II (Example) :
1. Lack of feedback
2. Misunderstanding the meaning of a word
3. Fear of social stigma
4. Information overload

Code :

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If ZERO is encoded as ADSN, then how do you encode STOP?

There are two chemicals which do not react with each other. A container contains 10 litres of the chemical A. One litre of this chemical is removed from it and one litre of the chemical B is poured. Then one litre of the mixture is removed from the container and one litre of B is poured. If this process of replacing one litre of the mixture by one litre of B is performed once more, then what is the volume of B that is present in the container approximately (in percentage)?

A pattern formed by two characters a and b is repeated more than once in the following string :
x b x a x a x x a x a x b a b
What is x x in the 7th and 8th positions from the left in the above string?

For two distinct real numbers x and y, which of them is bigger?
Statement I : $x^2 < y < 1$
Statement II : $y < \sqrt{x} <$ 1

Seven persons A, B, C, D, E, F and G travel by three cars X, Y, Z. A and another two of them travel by X. Only E travels with G. C travels by Z, but B does not travel by Y. Besides, A and B do not travel by the same car. Then which of the following are correct?
I. No one travels alone.
II. Only D travels with F.
III. Only C travels with B.

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Eight persons P, Q, R, S, T, U, V and W sit around a round table in eight different seats placed with equal distance between any two consecutive seats. Both P and R are adjacent to Q. Both T and R are adjacent to S. Both U and W are adjacent to V. S and W are on opposite chairs. If while going in the clockwise direction around the table from P, one meets R before T, then how many persons shall Q cross while moving in the clockwise direction around the table before meeting W?

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