|Exam Name||National Level Science Talent Search Exam [NSTSE]|
|Download||NSTSE Sample Question Papers|
|Classes||1 to 12|
NSTSE Talent Search Exam Sample Question Papers
NSTSE is a diagnostic test which helps students improve their overall learning ability and educational performance. Unlike other tests which may only find out how much a student knows or has memorised, NSTSE measures how well a student has understood the concepts and provides a detailed feedback on the same, to help him/her improve.
Thus NSTSE helps each student to know early, whether he/she has properly understood a concept, so that immediate action can be taken to correct the aberration and pave a path for improvement. Often, students develop conceptual gaps which increase as the students go to higher classes and turn those into a ‘phobia’ for the subject.
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NSTSE Sample Questions
Magnesium is not extracted using the reduction method by carbon because
(A) the extraction process is slow.
(B) the magnesium obtained is less pure.
(C) magnesium is more reactive than carbon.
(D) the reduction process requires a very high temperature and pressure.
The reaction between hydrochloric acid and sodium hydroxide releases more heat energy than the reaction between ethanoic acid and sodium hydroxide. What is the reason for this difference in heat energy released ?
(A) Less heat energy is released due to less water formed.
(B) More heat energy is released due to more water formed.
(C) Some heat energy is absorbed for the dissociation of ethanoic acid molecules to form hydrogen ions.
(D) More heat energy is released due to the dissociation of ethanoic acid molecules to form hydrogen ions.
In a neutralisation reaction, sodium hydroxide is neutralised by sulfuric acid. What would be the products of this neutralisation ?
3. Sodium Chloride
4. Sodium sulfate
(A) 1 and 3
(B) 2 and 3
(C) 2 and 4
(D) 1,2 and 4
An unbalanced chemical equation has number of atoms of elements are that
(A) less on the left side of the equation.
(B) more on the right side of the equation.
(C) equal on both sides of the equation.
(D) both (A) and (B)
The three elements calcium, strontium and barium form a triad. What is the basis of this grouping ?
i) Elements are in the increasing order of their atomic weights.
ii) The atomic weight of the middle element is equal to the average of the atomic weight of extreme elements.
iii) Elements in a triad have similar chemical properties.
(A) Only (i) and (ii)
(B) Only (ii) and (iii)
(C) Only (i) and (iii)
(D) (i), (ii) and (iii)
What happens to the pollen grains after pollination ?
(A) Pollen grow grains into a new plant.
(B) Pollen grains germinate on stigma.
(C) Pollen grain germinate on petal.
(D) Pollen grain develop into a fruit
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