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Daily Questions Challenge for IAS PRE (CSAT) Exam (18 June 2015)

Write and Discuss Your Answer with Q.No in Comment Box at the Bottom of Post.

1. Ball bearings are used in bicycles, cars, etc., because

(a) the actual area of contact between the wheel and axle is increased
(b) the effective area of contact between the wheel and axle is increased
(c) the effective area of contact between the wheel and axle is reduced
(d) None of the above statements is correct.

2. Consider the following phenomena:

1. Size of the sun at dusk
2. Colour of the sun at dawn
3. Moon being visible at dawn
4. Twinkle of stars in the sky
5. Polestar being visible in the sky

Which of the above are optical illusions?

(a) 1, 2 and 3
(b) 3, 4 and 5
(c) 1, 2 and 4
(d) 2, 3 and 5

3. Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this?

1. Dispersion
2. Refraction
3. Internal reflection

Select the correct answer using the codes given below

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

4. Many transplanted seedling do not grow because

(a) the new soil does not contain favourable minerals
(b) most of the root hairs grip the new soil too hard
(c) most of the root hair are lost during transplantation
(d) leaves get damaged during transplantation

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:: CSAT (Paper -2) ::

Six persons Amar, Bijay, Chetan, Disha, Esha and Farukh took up a job with an organization in a week from Monday to Saturday. Each of them joined for different posts on different days. The posts were of clerk, officer, technician, manager, supervisor and sales executives, though not necessarily in the same order. Farukh joined as a manager on the first day. Bijay joined as a supervisor but neither on Wednesday nor on Friday. Disha joined as a technician on Thursday. Chetan joined the firm as an officer on Wednesday. Esha joined as a clerk on Tuesday. Amar joined as a sales Executive.