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11th September 2015, 04:37 PM
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Join Date: Mar 2013
Re: NEST Junior Previous Papers

As you want to appear National Entrance Screening Test for take Admission to National Institute of Science Education and Research, for it Here I am providing info. same :


Total Marks: 200

Time Duration : 3 hours

The word ‘conspecifics’ refers to
(A) Birds with a specific period of development.
(B) Birds displaying appropriate behaviour in the presence of adults.
(C) Birds of the same species.
(D) Bird species not needing any special prompting or learning.

The pattern of development in Greylag Geese demonstrates that
(A) The hatching at an advanced stage is critical for imprinting.
(B) The capacity to recognise an adult of its own species is necessarily inherited.
(C) Rearing by humans does not alter the object of the behavioural routine.
(D) Geese reared by humans cannot be taught to respond to its own species.

Which of the following was an insight of Darwin?
(A) Behavioural animal routines need to be regarded as the animal’s environ-
mental adaptation.
(B) Behavioural animal routines are more significant than the anatomical structure in
the animal’s environmental adaptation.
(C) Behavioural animal routines are not related to environmental adaptation.
(D) Behavioural animal routines are always instinctive in their origin.


In a particular cipher, each character of the message is conveyed to the other party as a string
of numbers indicating a page number of a previously agreed book, a line number on that page
and the position of a character in that line. Choose the correct statement.
(A) The book in this example acts as a public key.
(B) The string of numbers in this example is a symmetric key.
(C) The text from the book is plaintext.
(D) This is an example of a symmetric key stream cipher.

In a particular cipher, 1st, 5th, 9th, ..., character in the text is replaced by the 4th letter of the
alphabet after that character and 4th, 8th, 12th, ..., character is replaced the 3rd letter of the
alphabet prior to that character. This is an example of,
(A) Symmetric key stream cipher. (B) Symmetric key block cipher.
(C) Public key cipher. (D) Information not sufficient.

Given the statement “All the students in a class passed the examination” is false, consider the
following four statements :
I. All the students in the class failed the examination.
II. There are some students in the class who failed the examination.
III. No student in the class passed the examination.
IV. Not all the students in the class passed the examination.

Which of the above statements are always true?
(A) I and III only. (B) I and II only.
(C) II and IV only. (D) III and IV only.


The practice of alternating pulses (like moong, peas, gram) with cereals (like rice, wheat) by farmers is an example of crop rotation. The primary reason for this practice is to
(A) Replenish the soil microbes.
(B) Avoid competition among pollinating agents.
(C) Protect themselves against price fluctuation of cereals.
(D) Maintain the water table in the field.

Lactobacillus sp. and Streptococcus sp. are two bacterial species responsible for curdling
of milk. One quantum of each of these species was introduced to a very large container of
milk. One quantum of either species can curdle 10 ml of milk in 26 minutes, which is also the doubling time for Streptococcus sp. The doubling time for Lactobacillus sp., however, is 78 minutes. What will be ratio of the total milk curdled by Streptococcus sp. to Lactobacillus sp. at the end of 156 minutes?
(A) 3 (B) 3.5 (C) 5.25 (D) 7

In a closed bottle of a carbonated soft drink, one can create the following equilibrium
CO2 + H2O ⇋ H2CO3
At the start of the reaction, 5 moles of CO2 and 5 moles of water are present and there is no carbonic acid. At equilibrium, 2 moles of carbonic acid were formed. How many moles of water exist at equilibrium?

(A) 1 (B) 2 (C) 3 (D) 4

For more details Here I am uploding a pdf file

NEST Prevoius year exam paper




Attached Files
File Type: pdf NEST Prevoius year exam paper.pdf (283.8 KB, 65 views)


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