Now Paper 1 is included in the subject (Chemical sciences, Physical sciences, Life sciences, Earth Sciences, Engineering Sciences and Mathematical Sciences) question papers starting 2013.

CSIR Paper 1 December 2011 Sample Questions Memory Based

  1. During a total solar eclipse occurring at noon, it becomes dark enough for a few minutes for stars to become visible. The stars that are seen are those which will be seen from the same location

    1. On the following night only

    2. On the night one month later

    3. On the night three months later

    4. On the night six months later

    Answer: d

  2. Restriction endonuclease cleaves DNA molecules at specific ‘recognition sites’ One such enzyme has four recognition sites on a circular DNA molecule. After complete digestion, how many fragments would be produced upon reaction with this enzyme?

    1. 4

    2. 5

    3. 3

    4. 6

    Answer: a

  3. See the following mathematical manipulations.

    1. Let x = 5

    2. then x2 − 25 = x − 5

    3. (x − 5) (x + 5) = x − 5

    4. x + 5 = 1 [cancelling (x − 5) from both sides]

    5. 10 = 1 [Putting x = 5]

    Which of the above is the wrong step?

    1. 1

    2. 2 3

    3. 3 4

    4. 4 5

    Answer: d

  4. Inner planets of the solar system are rocky, whereas outer planets are gaseous. One of the reasons for this is that

    1. solar heat drove away the gases to the outer region of the solar system

    2. gravitational pull of the sun pulled all rocky material to the inner solar system

    3. outer planets are larger than the inner planets

    4. comets delivered the gaseous materials to the outer planets

    Answer: a

  5. In? ABC, angle A is larger than angle C and smaller than angle B by the same amount. If angle B is 67° angle C is

    1. 67°

    2. 53°

    3. 60°

    4. 57°

    Answer: b