NSTSE' 2015 Official Answer Key....

Class 1 : https://www.scribd.com/doc/255401907/nstse-1

Class 2 : https://www.scribd.com/doc/255401909/nstse-2

Class 3 : https://www.scribd.com/doc/255401908/nstse-3

Class 4 : https://www.scribd.com/doc/255401911/nstse-4

Class 5 : https://www.scribd.com/doc/255401910/nstse-5

Class 6 : https://www.scribd.com/doc/255401917/nstse-6

Class 7 : https://www.scribd.com/doc/255401916/nstse-7

Class 8 : https://www.scribd.com/doc/255401913/nstse-8

Class 9 : https://www.scribd.com/doc/255401914/nstse-9

Class 10 : https://www.scribd.com/doc/255401915/nstse-10