This document contains information about a NTSE test for students, including: - Details about the test such as the date, time limit, and maximum marks - Sections on Chemistry, Physics, and Mathematics, each with multiple choice questions and answer keys - Contact information for Zignasa, the test preparation company, including their head office and branch office addresses and phone numbers

1. ZIGNASA
HeadOffice : 4th
Floor, 401-402, WesternCorridor,AdajanCircle,Surat.(O) 2799000
Branch Office :U-29, CornerPoint,Citylight,Surat.(O) 97144 10678
NTSE Max. Marks : 111
Date : 22/04/2012 Time : 1½ Hour
Test Series 1st
Chemistry – Structure of Atom (48 marks)
 Only One Option Correct
(Each questioncarries 3 marks for correct answer,0 for unattempted, -1 for incorrect)
1. Almostthe entire massof an atom isconcentratedinthe__________.
(a) Proton (b) electron (c) nucleus (d) neutrons
2. Electronwasdiscoveredby___________.
(a) Chadwick (b) Thomson (c) Goldstein (d) Bohr
3. An atomhas a mass numberof 23 and atomicnumber11. The numberof protonsare_________.
(a) 11 (b) 12 (c) 23 (d) 44
4. The mass of the atom is determined by________.
(a) neutrons (b) neutron and proton (c) electron (d) electron and neutron
5. Cathode rays are deflected towards__________.
(a) positive electrode (b) negative electrode (c) both electrodes (d) none of the electrodes
6. The absolute charge of an electron is___________.
(a) - 1.6 x 10-19C (b) + 1.6 x 10-19C (c) 1.6 x 10-19C (d) 16 x 10-19C
7. The proton is heavier than an electron by___________.
(a) 1850 times (b) 1840 times (c) 1000 times (d) 100 times
8. Carbon-12 atom has_______________.
(a) 6 electrons, 6 protons, 6 neutrons (b) 6 electrons, 12 protons, 6 neutrons
(c) 12 electrons, 6 protons, 6 neutrons (d) 18 electrons, 6 protons and 6 neutrons
9. Chadwick got the Nobel Prize for the discovery of __________.
(a) protons (b) neutrons (c) electrons (d) mesons
10. Mass number is equal to the_________.
(a) number of protons + number of electrons (b) number of protons + number of neutrons
(c) number of neutrons + number of electrons (d) number of electrons
11. The volume of the nucleus of an atom when compared to the extra nuclear part is_________.
(a) bigger (b) smaller (c) same size (d) unpredictable
12. In Rutherford’s alpha-scattering experiment, a foil of element that was used _______________.
(a) Gold (b) silver (c) aluminum (d) magnesium

2. ZIGNASA
HeadOffice : 4th
Floor, 401-402, WesternCorridor,AdajanCircle,Surat.(O) 2799000
Branch Office :U-29, CornerPoint,Citylight,Surat.(O) 97144 10678
13. During a chemical reaction, atomic number_________.
(a) changes (b) remains same (c) changes and then is restored (d) changes alternately
14. The fixed circular paths around the nucleus are called_________.
(a) Orbits (b) orbitals (c) nucleons (d) mesons
15. If the light radiation from neon atom has a wavelength of 300 nm, then the energy of the photon being
emitted is :
1) 6.626 x 10-19J (b) 1.1 × 10-10 J (c) 2 × 10-19 J (d) 3.3 × 20-12 J
16. The angular momentum of electron in Bohr’s first orbit of hydrogen atom is ‘x’ what will be its angular
momentum in the Bohr’s first orbit of He+?
(a) 2x (b) 4x (c) x (d) x2
Physics – Motion (30 marks)
 Only One Option Correct
(Each questioncarries 3 marks for correct answer,0 for unattempted, -1 for incorrect)
1. A car increases its speed from 36 km/hr to 72 km/hr in 10 s. Its acceleration is
(A) 1 m/s2 (B) 2 m/s2 (C) 3.6 m/s2 (D) 5 m/s2
2. The following time-velocity graph (fig) represents
(A) zero acceleration (B) positive acceleration
(C) negative acceleration (D) variable acceleration
3. Which of the following is incorrect statement?
(A) speed is a scalar quantity while velocity is a vector quantity
(B) speed may be positive or negative but velocity is always positive.
(C) The change in the position of a body in a particular direction is called displacement.
(D) displacement can be positive as well as negative.
4. A ball is thrown vertically upwards, It rises to a height of 20 m and comes back to the same place, then the
(A) total distance covered by the ball is zero (B) net displacement of the ball is zero
(C) displacement is 40 m (D) both distance moved and displacement are 40 m each
5. A body moves with a constant acceleration upto 10s. It travels a distance s, in first 5s and a distance s2 in
next 5s, then
(A) s2 = s1 (B) s2 = 2s1 (C) s2 = 3s1 (D) s2 = 4s1
6. The slope of speed-time graph gives
(A) displacement (B) velocity (C) acceleration(D) momentum
7. A particle moves in a straight line. It travels for first half time with a velocity v1 and for next half time
with a velocity v2. The average velocity over the complete path is
(A) (B) (C) (D) v1 + v2
2
vv 21 
21
21
vv
vv2
 2
vv 21 

3. ZIGNASA
HeadOffice : 4th
Floor, 401-402, WesternCorridor,AdajanCircle,Surat.(O) 2799000
Branch Office :U-29, CornerPoint,Citylight,Surat.(O) 97144 10678
8. A particle is thrown vertically up with some initial velocity and comes back to the ground. Its velocity-
time graph is represented by
(A) (B) (C) (D)
9. The distance between two points A and B is 100 m. A person moves from A to B with a speed of 20 m/s
and from B to A with a speed of 25 m/s. Calculate average speed and average velocity.
(A) 22.5 m/s, 22.2 m/s (B) 22.2 m/s, 22.2 m/s
(C) 22.5 m/s , 0 (D) 0 , 22.2 m/s
10. Time-velocity graph of a body is shown in the fig. Find its acceleration in m/s2.
(A) 0 (B) 5m/s2 (C) 10m/s2 (D) 15m/s2
Time
velocity
Time
velocity
Time
velocity
Time
velocity
80
60
40
20
0
1 2 3 4
Time(hrs)Velocity(m/s)

4. ZIGNASA
HeadOffice : 4th
Floor, 401-402, WesternCorridor,AdajanCircle,Surat.(O) 2799000
Branch Office :U-29, CornerPoint,Citylight,Surat.(O) 97144 10678
NTSE Max. Marks : 111
Date : 22/04/2012 Time : 1½ Hour
Test Series 1st
Student Name : ____________________________________________ Contact No : _______________
OMR SHEET
Chemistry Physics Mathematics
No. A B C D No. A B C D No. A B C D
1     1     1    
2     2     2    
3     3     3    
4     4     4    
5     5     5    
6     6     6    
7     7     7    
8     8     8    
9     9     9    
10     10     10    
11     11    
12    
13    
14    
15    
16    

5. ZIGNASA
HeadOffice : 4th
Floor, 401-402, WesternCorridor,AdajanCircle,Surat.(O) 2799000
Branch Office :U-29, CornerPoint,Citylight,Surat.(O) 97144 10678
NTSE Max. Marks : 48
Date : 22/04/2012 Time : 30 minute
Answer Key
Chemistry – Structure of Atom
1. C 2. B 3. A 4. B 5. A 6. A 7. B 8. A
9. B 10. B 11. B 12. A 13. B 14. A 15. A 16. C
Physics – Motion
1. A 2. B 3. B 4. B 5. C 6. C 7. A 8. D
9. C 10. D
Mathematics – Number system
1. B 2. C 3. D 4. D 5. C 6. B 7. C 8. C
9. D 10. C 11. C