Tamil Nadu: State Level Question Paper (SAT) - 2019-20 | NTSE for Class 10 PDF Download

 Page 1


 
 
   
 
 Chennai Centre 
TAMILNADU NTSE Stage 1 (2019-20) 
 
 
 
 
 
 
 
 
101.The sum of the exponents of prime factors in the prime factorization of 1771 is: 
 (1) 1 (2) 3 (3) 2 (4) 4 
 
102. If tn is the n
th
 term of an A.P. then the value of tn+1 – tn-1 is: 
 (1) 2a (2) – 2a (3) 2d (4) – 2d 
 
103. If x + y = 3, x
2
 + y
2
 = 5 then xy is: 
 (1) 5 (2) 3 (3) 2 (4) 1 
 
104. The area of the triangle formed by the points (-2, 0) (0, -2) and (2, 0) is: 
 (1) 0 (2) 4 (3) 2 (4) – 4 
 
105. The area of equilateral triangle is 25 3 cm
2
, then the perimeter is: 
 (1) 10 cm (2) 30 cm (3) 10 3 cm (4) 10 3 cm 
 
106. If the ratio of the surface areas of two cubes is 16 : 36, then the ratio of their sides will be: 
 (1) 4 : 9 (2) 9 : 4 (3) 3 : 2 (4) 2 : 3 
 
107. 
11
?
1 sin 1 sin
+=
+ ? - ?
 
 (1) 
2
sec ? (2) 
2
2sec ? (3) 
2
cosec ? (4) 
2
2 cosec ? 
 
108. Given that sin A = 
1
2
and cos B = 
1
2
then the value of A + B is: 
 (1) 30° (2) 45° (3) 75° (4) 15° 
 
109.If 5 tan ? = 4 then the value of 
5 sin 4 cos
5 sin 4 cos
? - ?
? + ?
is: 
 (1) 
5
4
 (2)  
4
5
 (3) 1 (4) 0 
110. If cos (A - B) = 
3
2
and sin (A + B) = 1 then the value of A and B is: 
 (1) 45° and 15° (2) 30° and 15° (3) 60° and 30° (4) None of these 
 
111. Which statement is true? 
 (1) A triangle can have two right angles  (2) Each of the angles of a triangle can be less than 60° 
 (3) Each of the angles of a triangle can be greater than 60° (4) Each of the angles of a triangle can be equal to 60° 
 
112. If the diagonals of  a rhombus are 18 cm and 24 cm. then its side is: 
 (1) 16 cm (2) 15 cm (3) 20 cm (4) 17 cm 
 
113. Which of the following numbers will completely divide 
61 62 63 64
4 4 4 4 ? + + + 
SAT EXAM 
 
Page 2


 
 
   
 
 Chennai Centre 
TAMILNADU NTSE Stage 1 (2019-20) 
 
 
 
 
 
 
 
 
101.The sum of the exponents of prime factors in the prime factorization of 1771 is: 
 (1) 1 (2) 3 (3) 2 (4) 4 
 
102. If tn is the n
th
 term of an A.P. then the value of tn+1 – tn-1 is: 
 (1) 2a (2) – 2a (3) 2d (4) – 2d 
 
103. If x + y = 3, x
2
 + y
2
 = 5 then xy is: 
 (1) 5 (2) 3 (3) 2 (4) 1 
 
104. The area of the triangle formed by the points (-2, 0) (0, -2) and (2, 0) is: 
 (1) 0 (2) 4 (3) 2 (4) – 4 
 
105. The area of equilateral triangle is 25 3 cm
2
, then the perimeter is: 
 (1) 10 cm (2) 30 cm (3) 10 3 cm (4) 10 3 cm 
 
106. If the ratio of the surface areas of two cubes is 16 : 36, then the ratio of their sides will be: 
 (1) 4 : 9 (2) 9 : 4 (3) 3 : 2 (4) 2 : 3 
 
107. 
11
?
1 sin 1 sin
+=
+ ? - ?
 
 (1) 
2
sec ? (2) 
2
2sec ? (3) 
2
cosec ? (4) 
2
2 cosec ? 
 
108. Given that sin A = 
1
2
and cos B = 
1
2
then the value of A + B is: 
 (1) 30° (2) 45° (3) 75° (4) 15° 
 
109.If 5 tan ? = 4 then the value of 
5 sin 4 cos
5 sin 4 cos
? - ?
? + ?
is: 
 (1) 
5
4
 (2)  
4
5
 (3) 1 (4) 0 
110. If cos (A - B) = 
3
2
and sin (A + B) = 1 then the value of A and B is: 
 (1) 45° and 15° (2) 30° and 15° (3) 60° and 30° (4) None of these 
 
111. Which statement is true? 
 (1) A triangle can have two right angles  (2) Each of the angles of a triangle can be less than 60° 
 (3) Each of the angles of a triangle can be greater than 60° (4) Each of the angles of a triangle can be equal to 60° 
 
112. If the diagonals of  a rhombus are 18 cm and 24 cm. then its side is: 
 (1) 16 cm (2) 15 cm (3) 20 cm (4) 17 cm 
 
113. Which of the following numbers will completely divide 
61 62 63 64
4 4 4 4 ? + + + 
SAT EXAM 
 
 
 
   
 
 (1) 3 (2) 10 (3) 11 (4) 13 
 
114. The diagonals of a rectangle is 41 cm and its area is 20 cm
2
. The perimeter of a rectangle must be: 
 (1) 9 cm (2) 18 cm (3) 20 cm (4) 41 cm 
 
115. The scientific notation of 108000000 km is: 
 (1) 1.08000000 km (2) 
6
10.80 10 km ? (3) 
6
1.08 10 km ? (4) 
8
1.08 10 km ? 
 
116. Cards are marked from 1 to 5 are placed in the box and mixed thoroughly, a card is drawn at random from the box.  
 What is the probability of this card to be a multiple of 5? 
 (1) 
1
5
 (2) 0 (3) 
1
25
 (4) 1 
 
117. The graph of the line x – y = 0 passes through the point. 
 (1) (2, 3) (2) (3, 4) (3) (5, 6) (4) (0, 0) 
 
118. If (9x + 7), (2x + 9) are the factors of a quadratic polynomial, then the co-efficient of x is: 
 (1) 9 (2) 2 (3) 18 (4) 95 
119. Simplify : 
( )
1/ 4
3
1/ 2 1/ 3
5 8 27
??
+
??
??
 
 (1) 3 (2) 27 (3) 8 (4) 5 
 
120. The numbers 2, 3, 4, 4, 2x + 1, 5,5, 6, 7 are written in ascending order. If the median is 5, then find x. 
 (1) 2 (2) 3 (3) 4 (4) 5 
 
121.Lactometer is instrument which works on the principle of? 
 (1) Law of Floatation (2) Newton’s Law (3) Ohm’s Law (4) Avogadro’s Law 
 
122. A 250 kg bike is ridden by a circus man at a speed of 20 m/sec. in a circular path of diameter 100 m. Calculate its  
 acceleration. 
 (1) 4 m /sec
2
 (2) 6 m/sec
2
 (3) 8 m /sec
2
 (4) 9 m /sec
2
 
 
123. Find the odd one out: 
 (1) 
15
30.8 10 m ? (2) 
15
9.46 10 m ? (3) 
11
1.496 10 m ? (4) 
16
3.08 10 m ? 
 
124. The spectacular glow of diamond is due to: 
 (1) Refraction (2) Reflection  
 (3) Total Internal Reflection (4) Scattering of Light 
 
125. A song was heard by a person who is at certain distance from a temple wherein the frequency of the sound is 3 kHz  
 and the wavelength 20 cm. If the sound reaches the person in 5 seconds find the distance travelled by the sound.  
 (1) 5 km (2) 2 km (3) 4 km  (4) 3 km 
 
126. If a current of 5 A flows through the heater and the amount of heat produced is 54000 J in 6 minutes, then find the  
 resistance of the electric heater. 
 (1) 6 ? (2) 5 ? (3) 7 ? (4) 4 ?  
 
 
 
 
 
 
 
127. Match the following: 
  
(a) Formation of real and inverted 
image of objects 
(i) Pupil 
Page 3


 
 
   
 
 Chennai Centre 
TAMILNADU NTSE Stage 1 (2019-20) 
 
 
 
 
 
 
 
 
101.The sum of the exponents of prime factors in the prime factorization of 1771 is: 
 (1) 1 (2) 3 (3) 2 (4) 4 
 
102. If tn is the n
th
 term of an A.P. then the value of tn+1 – tn-1 is: 
 (1) 2a (2) – 2a (3) 2d (4) – 2d 
 
103. If x + y = 3, x
2
 + y
2
 = 5 then xy is: 
 (1) 5 (2) 3 (3) 2 (4) 1 
 
104. The area of the triangle formed by the points (-2, 0) (0, -2) and (2, 0) is: 
 (1) 0 (2) 4 (3) 2 (4) – 4 
 
105. The area of equilateral triangle is 25 3 cm
2
, then the perimeter is: 
 (1) 10 cm (2) 30 cm (3) 10 3 cm (4) 10 3 cm 
 
106. If the ratio of the surface areas of two cubes is 16 : 36, then the ratio of their sides will be: 
 (1) 4 : 9 (2) 9 : 4 (3) 3 : 2 (4) 2 : 3 
 
107. 
11
?
1 sin 1 sin
+=
+ ? - ?
 
 (1) 
2
sec ? (2) 
2
2sec ? (3) 
2
cosec ? (4) 
2
2 cosec ? 
 
108. Given that sin A = 
1
2
and cos B = 
1
2
then the value of A + B is: 
 (1) 30° (2) 45° (3) 75° (4) 15° 
 
109.If 5 tan ? = 4 then the value of 
5 sin 4 cos
5 sin 4 cos
? - ?
? + ?
is: 
 (1) 
5
4
 (2)  
4
5
 (3) 1 (4) 0 
110. If cos (A - B) = 
3
2
and sin (A + B) = 1 then the value of A and B is: 
 (1) 45° and 15° (2) 30° and 15° (3) 60° and 30° (4) None of these 
 
111. Which statement is true? 
 (1) A triangle can have two right angles  (2) Each of the angles of a triangle can be less than 60° 
 (3) Each of the angles of a triangle can be greater than 60° (4) Each of the angles of a triangle can be equal to 60° 
 
112. If the diagonals of  a rhombus are 18 cm and 24 cm. then its side is: 
 (1) 16 cm (2) 15 cm (3) 20 cm (4) 17 cm 
 
113. Which of the following numbers will completely divide 
61 62 63 64
4 4 4 4 ? + + + 
SAT EXAM 
 
 
 
   
 
 (1) 3 (2) 10 (3) 11 (4) 13 
 
114. The diagonals of a rectangle is 41 cm and its area is 20 cm
2
. The perimeter of a rectangle must be: 
 (1) 9 cm (2) 18 cm (3) 20 cm (4) 41 cm 
 
115. The scientific notation of 108000000 km is: 
 (1) 1.08000000 km (2) 
6
10.80 10 km ? (3) 
6
1.08 10 km ? (4) 
8
1.08 10 km ? 
 
116. Cards are marked from 1 to 5 are placed in the box and mixed thoroughly, a card is drawn at random from the box.  
 What is the probability of this card to be a multiple of 5? 
 (1) 
1
5
 (2) 0 (3) 
1
25
 (4) 1 
 
117. The graph of the line x – y = 0 passes through the point. 
 (1) (2, 3) (2) (3, 4) (3) (5, 6) (4) (0, 0) 
 
118. If (9x + 7), (2x + 9) are the factors of a quadratic polynomial, then the co-efficient of x is: 
 (1) 9 (2) 2 (3) 18 (4) 95 
119. Simplify : 
( )
1/ 4
3
1/ 2 1/ 3
5 8 27
??
+
??
??
 
 (1) 3 (2) 27 (3) 8 (4) 5 
 
120. The numbers 2, 3, 4, 4, 2x + 1, 5,5, 6, 7 are written in ascending order. If the median is 5, then find x. 
 (1) 2 (2) 3 (3) 4 (4) 5 
 
121.Lactometer is instrument which works on the principle of? 
 (1) Law of Floatation (2) Newton’s Law (3) Ohm’s Law (4) Avogadro’s Law 
 
122. A 250 kg bike is ridden by a circus man at a speed of 20 m/sec. in a circular path of diameter 100 m. Calculate its  
 acceleration. 
 (1) 4 m /sec
2
 (2) 6 m/sec
2
 (3) 8 m /sec
2
 (4) 9 m /sec
2
 
 
123. Find the odd one out: 
 (1) 
15
30.8 10 m ? (2) 
15
9.46 10 m ? (3) 
11
1.496 10 m ? (4) 
16
3.08 10 m ? 
 
124. The spectacular glow of diamond is due to: 
 (1) Refraction (2) Reflection  
 (3) Total Internal Reflection (4) Scattering of Light 
 
125. A song was heard by a person who is at certain distance from a temple wherein the frequency of the sound is 3 kHz  
 and the wavelength 20 cm. If the sound reaches the person in 5 seconds find the distance travelled by the sound.  
 (1) 5 km (2) 2 km (3) 4 km  (4) 3 km 
 
126. If a current of 5 A flows through the heater and the amount of heat produced is 54000 J in 6 minutes, then find the  
 resistance of the electric heater. 
 (1) 6 ? (2) 5 ? (3) 7 ? (4) 4 ?  
 
 
 
 
 
 
 
127. Match the following: 
  
(a) Formation of real and inverted 
image of objects 
(i) Pupil 
 
 
   
 
(b) Controls the amount of light 
entering the pupil 
(ii) Cornea 
(c) Pathway of the light to retina (iii) Iris 
(d) Refracts or bends the light onto 
the lens 
(iv) Retina 
 (1) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) (2) (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i) 
 (3) (a) – (iii), (b) – (iv), (c) – (ii), (d) – (iv) (4) (a) – (ii), (b) – (i), (c) – (iii), (d) – (iv) 
 
128.  Pick out the correct pair/pairs: 
  
(a) Radiation -  Heat is transferred in the form of waves. It can occur even in vacuum. 
(b) Conduction -  Transfer of heat in fluids. It doesn’t take place in vacuum 
(c) Convection - Transfer of heat in solids. It can occur in vacuum. 
 (1) (a) only (2) (b) and (c) only (3) (a) and (c) only (4) (c) only 
 
129. Correct the given statement.  
 The spectral lines having frequency equal to the incident ray frequency is called ‘Raman Lines’. 
 (1) Rayleigh Lines (2) Stokes Lines (3) Anti Stokes Lines (4) Tyndall Effect 
 
130. The only moon in the solar system that moves in the opposite direction to the direction in which its planet spins? 
 (1) Sputnik (2) Titan (3) Ganymede (4) Triton 
 
131. The reason for using red light in traffic signals to stop vehicles. 
 (1) Red light has shorter wavelength  (2) Red light has longer wavelength 
 (3) Red light is very bright and attractive  (4) Red light has highest angle of refraction 
 
132. Which one of the following is not related to Joule’s Law of Heating? 
 (1) H = I
2
Rt (2) H = VIt (3) H = VIRt
2
 (4) H = VQ 
 
133. Convert 1 Kilowatt into Horespower: 
 (1) 1.43 HP (2) 746000 HP (3) 1.34 HP (4) 0.746 HP 
 
134. Pick the odd one out: 
 (1) CCl4 (2) NaCl (3) CuCl2 (4) CaCl2 
 
135. Match the following: 
  
(a) Tydall Effect (i) Separates blood cells 
from blood samples 
(b) Brownian Movement (ii) Separates different 
coloured dyes 
(c) Centrifugation (iii) Colloidal particles moves 
in zig – zag direction 
(d) Paper 
Chromatography 
(iv) Not observed in true 
solution 
 
 (1) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) (2) (a) – (iii), (b) – (iv), (c) – (i), (d) – (ii) 
 (3) (a) – (iii), (b) – (i), (c) – (iv), (d) – (ii) (4) (a) – (i), (b) – (iii), (c) – (ii), (d) – (iv) 
 
136. The Law of Multiple Proportion was proposed by: 
 (1) John Dalton (2) Jeremias Ritcher (3) Neil Bohr (4) Rutherford 
 
 
 
 
137. Assertion (A): Bronze is an alloy. 
 Reason (R): Alloy bears the characteristics of both metal and non – metal 
 (1) Both (A) and (R) are correct  (2) Both (A) and (R) are wrong 
Page 4


 
 
   
 
 Chennai Centre 
TAMILNADU NTSE Stage 1 (2019-20) 
 
 
 
 
 
 
 
 
101.The sum of the exponents of prime factors in the prime factorization of 1771 is: 
 (1) 1 (2) 3 (3) 2 (4) 4 
 
102. If tn is the n
th
 term of an A.P. then the value of tn+1 – tn-1 is: 
 (1) 2a (2) – 2a (3) 2d (4) – 2d 
 
103. If x + y = 3, x
2
 + y
2
 = 5 then xy is: 
 (1) 5 (2) 3 (3) 2 (4) 1 
 
104. The area of the triangle formed by the points (-2, 0) (0, -2) and (2, 0) is: 
 (1) 0 (2) 4 (3) 2 (4) – 4 
 
105. The area of equilateral triangle is 25 3 cm
2
, then the perimeter is: 
 (1) 10 cm (2) 30 cm (3) 10 3 cm (4) 10 3 cm 
 
106. If the ratio of the surface areas of two cubes is 16 : 36, then the ratio of their sides will be: 
 (1) 4 : 9 (2) 9 : 4 (3) 3 : 2 (4) 2 : 3 
 
107. 
11
?
1 sin 1 sin
+=
+ ? - ?
 
 (1) 
2
sec ? (2) 
2
2sec ? (3) 
2
cosec ? (4) 
2
2 cosec ? 
 
108. Given that sin A = 
1
2
and cos B = 
1
2
then the value of A + B is: 
 (1) 30° (2) 45° (3) 75° (4) 15° 
 
109.If 5 tan ? = 4 then the value of 
5 sin 4 cos
5 sin 4 cos
? - ?
? + ?
is: 
 (1) 
5
4
 (2)  
4
5
 (3) 1 (4) 0 
110. If cos (A - B) = 
3
2
and sin (A + B) = 1 then the value of A and B is: 
 (1) 45° and 15° (2) 30° and 15° (3) 60° and 30° (4) None of these 
 
111. Which statement is true? 
 (1) A triangle can have two right angles  (2) Each of the angles of a triangle can be less than 60° 
 (3) Each of the angles of a triangle can be greater than 60° (4) Each of the angles of a triangle can be equal to 60° 
 
112. If the diagonals of  a rhombus are 18 cm and 24 cm. then its side is: 
 (1) 16 cm (2) 15 cm (3) 20 cm (4) 17 cm 
 
113. Which of the following numbers will completely divide 
61 62 63 64
4 4 4 4 ? + + + 
SAT EXAM 
 
 
 
   
 
 (1) 3 (2) 10 (3) 11 (4) 13 
 
114. The diagonals of a rectangle is 41 cm and its area is 20 cm
2
. The perimeter of a rectangle must be: 
 (1) 9 cm (2) 18 cm (3) 20 cm (4) 41 cm 
 
115. The scientific notation of 108000000 km is: 
 (1) 1.08000000 km (2) 
6
10.80 10 km ? (3) 
6
1.08 10 km ? (4) 
8
1.08 10 km ? 
 
116. Cards are marked from 1 to 5 are placed in the box and mixed thoroughly, a card is drawn at random from the box.  
 What is the probability of this card to be a multiple of 5? 
 (1) 
1
5
 (2) 0 (3) 
1
25
 (4) 1 
 
117. The graph of the line x – y = 0 passes through the point. 
 (1) (2, 3) (2) (3, 4) (3) (5, 6) (4) (0, 0) 
 
118. If (9x + 7), (2x + 9) are the factors of a quadratic polynomial, then the co-efficient of x is: 
 (1) 9 (2) 2 (3) 18 (4) 95 
119. Simplify : 
( )
1/ 4
3
1/ 2 1/ 3
5 8 27
??
+
??
??
 
 (1) 3 (2) 27 (3) 8 (4) 5 
 
120. The numbers 2, 3, 4, 4, 2x + 1, 5,5, 6, 7 are written in ascending order. If the median is 5, then find x. 
 (1) 2 (2) 3 (3) 4 (4) 5 
 
121.Lactometer is instrument which works on the principle of? 
 (1) Law of Floatation (2) Newton’s Law (3) Ohm’s Law (4) Avogadro’s Law 
 
122. A 250 kg bike is ridden by a circus man at a speed of 20 m/sec. in a circular path of diameter 100 m. Calculate its  
 acceleration. 
 (1) 4 m /sec
2
 (2) 6 m/sec
2
 (3) 8 m /sec
2
 (4) 9 m /sec
2
 
 
123. Find the odd one out: 
 (1) 
15
30.8 10 m ? (2) 
15
9.46 10 m ? (3) 
11
1.496 10 m ? (4) 
16
3.08 10 m ? 
 
124. The spectacular glow of diamond is due to: 
 (1) Refraction (2) Reflection  
 (3) Total Internal Reflection (4) Scattering of Light 
 
125. A song was heard by a person who is at certain distance from a temple wherein the frequency of the sound is 3 kHz  
 and the wavelength 20 cm. If the sound reaches the person in 5 seconds find the distance travelled by the sound.  
 (1) 5 km (2) 2 km (3) 4 km  (4) 3 km 
 
126. If a current of 5 A flows through the heater and the amount of heat produced is 54000 J in 6 minutes, then find the  
 resistance of the electric heater. 
 (1) 6 ? (2) 5 ? (3) 7 ? (4) 4 ?  
 
 
 
 
 
 
 
127. Match the following: 
  
(a) Formation of real and inverted 
image of objects 
(i) Pupil 
 
 
   
 
(b) Controls the amount of light 
entering the pupil 
(ii) Cornea 
(c) Pathway of the light to retina (iii) Iris 
(d) Refracts or bends the light onto 
the lens 
(iv) Retina 
 (1) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) (2) (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i) 
 (3) (a) – (iii), (b) – (iv), (c) – (ii), (d) – (iv) (4) (a) – (ii), (b) – (i), (c) – (iii), (d) – (iv) 
 
128.  Pick out the correct pair/pairs: 
  
(a) Radiation -  Heat is transferred in the form of waves. It can occur even in vacuum. 
(b) Conduction -  Transfer of heat in fluids. It doesn’t take place in vacuum 
(c) Convection - Transfer of heat in solids. It can occur in vacuum. 
 (1) (a) only (2) (b) and (c) only (3) (a) and (c) only (4) (c) only 
 
129. Correct the given statement.  
 The spectral lines having frequency equal to the incident ray frequency is called ‘Raman Lines’. 
 (1) Rayleigh Lines (2) Stokes Lines (3) Anti Stokes Lines (4) Tyndall Effect 
 
130. The only moon in the solar system that moves in the opposite direction to the direction in which its planet spins? 
 (1) Sputnik (2) Titan (3) Ganymede (4) Triton 
 
131. The reason for using red light in traffic signals to stop vehicles. 
 (1) Red light has shorter wavelength  (2) Red light has longer wavelength 
 (3) Red light is very bright and attractive  (4) Red light has highest angle of refraction 
 
132. Which one of the following is not related to Joule’s Law of Heating? 
 (1) H = I
2
Rt (2) H = VIt (3) H = VIRt
2
 (4) H = VQ 
 
133. Convert 1 Kilowatt into Horespower: 
 (1) 1.43 HP (2) 746000 HP (3) 1.34 HP (4) 0.746 HP 
 
134. Pick the odd one out: 
 (1) CCl4 (2) NaCl (3) CuCl2 (4) CaCl2 
 
135. Match the following: 
  
(a) Tydall Effect (i) Separates blood cells 
from blood samples 
(b) Brownian Movement (ii) Separates different 
coloured dyes 
(c) Centrifugation (iii) Colloidal particles moves 
in zig – zag direction 
(d) Paper 
Chromatography 
(iv) Not observed in true 
solution 
 
 (1) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) (2) (a) – (iii), (b) – (iv), (c) – (i), (d) – (ii) 
 (3) (a) – (iii), (b) – (i), (c) – (iv), (d) – (ii) (4) (a) – (i), (b) – (iii), (c) – (ii), (d) – (iv) 
 
136. The Law of Multiple Proportion was proposed by: 
 (1) John Dalton (2) Jeremias Ritcher (3) Neil Bohr (4) Rutherford 
 
 
 
 
137. Assertion (A): Bronze is an alloy. 
 Reason (R): Alloy bears the characteristics of both metal and non – metal 
 (1) Both (A) and (R) are correct  (2) Both (A) and (R) are wrong 
 
 
   
 
 (3) (A) is correct but (R) doesn’t explain (A) (4) (A) is correct and (R) explains (A). 
 
138. Find the odd one out: 
 (1) Galvanization (2) Bessemerisation (3) Electroplating (4) Anodizing 
 
139. 2 
2
PbO C 2 Pb CO + ? + is an example of ____________ reaction. 
 (1) Reduction (2) Redox  (3) Oxidation (4) Decomposition 
 
140. The ratio of conc. HCl and conc. HNO3 in ‘King’s Water’ is: 
 (1) 4 : 1 (2) 1 : 4 (3) 3 : 1 (4) 1 : 3 
 
141. Find the incorrect pair: 
  
(1) Ammonium Hydroxide -  Removes grease stains from clothes 
(2) Calcium Hydroxide - White washing of building 
(3)  Sodium Hydroxide -  Manufacture of soap 
(4) Magnesium Hydroxide -  Manufacture of fertilizers  
  
142. Which one of the following resin codes in plastic items are unsafe? 
 (1) 1, 2, 3 (2) 3, 6, 7 (3) 3, 4, 5 (4) 5, 6, 7 
 
143. Which among the following is highly toxic and inflammable gas? 
 (1) CO (2) CO2 (3) CS2 (4) CaC2 
 
144. The reason for unstability of nano particles: 
  (1) Hydrolysis (2) Hydration (3) Combustion (4) Reduction 
 
145. Occult fingerprints are made visible by the use of ________ which turns purple.  
  (1) Cyano acrylate (2) Potassium di – chromate 
 (3) Nin – hydrin (4) Silver nitrate 
 
146. Pick out the correct formula for blue vitriol: 
 (1) CuSO4. 5H2O (2) CuSO4. 7H2O (3) CuSO4. 6H2O (4) CuSO4. 9H2O 
 
147. When exposed to sunlight, parenchyma cells may develop chloroplasts and are known as_________. 
 (1) Collenchyma (2) Chromoplast (3) Chlorenchyma (4) Aerenchyma 
 
148. Give the correct equation of photosynthesis: 
 (1) 
Photosynthesis
2 3 2 2 Chlorophyll
Na CO 2HCl 2NaCl H O CO + ? ? ? ? ? ? ? + + ? (2) 
Photosynthesis
2 2 6 12 6 2 Chlorophyll
6CO 6H O C H O 6O + ? ? ? ? ? ? ? + ? 
 (3) 
Photosynthesis
2 2 2 6 6 6 2 Chlorophyll
3H O 6CO C H O 6O + ? ? ? ? ? ? ? + ? (4) 
23
H H O H O
++
+? 
 
149. In some bacteria, outside the cell wall, there is an additional slimy protective layer called _______ made up of 
_________. 
 (1) Epiderm, monosaccharides (2) DNA, mitochondria  
 (3) Capsule, polysaccharides  (4) Ribosomes, protein 
 
150. Which is/are wrong about the adaptation of hydrophytes? 
 (1) Air chambers provide mechanical support to plant 
 (2) Floating leaves have short leaf stalk 
 (3) Roots are poorly developed 
 (4) Submerged leaves are broad and big 
 
151. ‘AYUSH’ refers to the systems of medicines of: 
 (1) Unani (2) Siddha (3) Ayurveda (4) All of the above 
 
152. Father of Plant Anatomy: 
 (1) Nehemiah Grew (2) Robin Hill (3) Sachs (4) Kolliker 
Page 5


 
 
   
 
 Chennai Centre 
TAMILNADU NTSE Stage 1 (2019-20) 
 
 
 
 
 
 
 
 
101.The sum of the exponents of prime factors in the prime factorization of 1771 is: 
 (1) 1 (2) 3 (3) 2 (4) 4 
 
102. If tn is the n
th
 term of an A.P. then the value of tn+1 – tn-1 is: 
 (1) 2a (2) – 2a (3) 2d (4) – 2d 
 
103. If x + y = 3, x
2
 + y
2
 = 5 then xy is: 
 (1) 5 (2) 3 (3) 2 (4) 1 
 
104. The area of the triangle formed by the points (-2, 0) (0, -2) and (2, 0) is: 
 (1) 0 (2) 4 (3) 2 (4) – 4 
 
105. The area of equilateral triangle is 25 3 cm
2
, then the perimeter is: 
 (1) 10 cm (2) 30 cm (3) 10 3 cm (4) 10 3 cm 
 
106. If the ratio of the surface areas of two cubes is 16 : 36, then the ratio of their sides will be: 
 (1) 4 : 9 (2) 9 : 4 (3) 3 : 2 (4) 2 : 3 
 
107. 
11
?
1 sin 1 sin
+=
+ ? - ?
 
 (1) 
2
sec ? (2) 
2
2sec ? (3) 
2
cosec ? (4) 
2
2 cosec ? 
 
108. Given that sin A = 
1
2
and cos B = 
1
2
then the value of A + B is: 
 (1) 30° (2) 45° (3) 75° (4) 15° 
 
109.If 5 tan ? = 4 then the value of 
5 sin 4 cos
5 sin 4 cos
? - ?
? + ?
is: 
 (1) 
5
4
 (2)  
4
5
 (3) 1 (4) 0 
110. If cos (A - B) = 
3
2
and sin (A + B) = 1 then the value of A and B is: 
 (1) 45° and 15° (2) 30° and 15° (3) 60° and 30° (4) None of these 
 
111. Which statement is true? 
 (1) A triangle can have two right angles  (2) Each of the angles of a triangle can be less than 60° 
 (3) Each of the angles of a triangle can be greater than 60° (4) Each of the angles of a triangle can be equal to 60° 
 
112. If the diagonals of  a rhombus are 18 cm and 24 cm. then its side is: 
 (1) 16 cm (2) 15 cm (3) 20 cm (4) 17 cm 
 
113. Which of the following numbers will completely divide 
61 62 63 64
4 4 4 4 ? + + + 
SAT EXAM 
 
 
 
   
 
 (1) 3 (2) 10 (3) 11 (4) 13 
 
114. The diagonals of a rectangle is 41 cm and its area is 20 cm
2
. The perimeter of a rectangle must be: 
 (1) 9 cm (2) 18 cm (3) 20 cm (4) 41 cm 
 
115. The scientific notation of 108000000 km is: 
 (1) 1.08000000 km (2) 
6
10.80 10 km ? (3) 
6
1.08 10 km ? (4) 
8
1.08 10 km ? 
 
116. Cards are marked from 1 to 5 are placed in the box and mixed thoroughly, a card is drawn at random from the box.  
 What is the probability of this card to be a multiple of 5? 
 (1) 
1
5
 (2) 0 (3) 
1
25
 (4) 1 
 
117. The graph of the line x – y = 0 passes through the point. 
 (1) (2, 3) (2) (3, 4) (3) (5, 6) (4) (0, 0) 
 
118. If (9x + 7), (2x + 9) are the factors of a quadratic polynomial, then the co-efficient of x is: 
 (1) 9 (2) 2 (3) 18 (4) 95 
119. Simplify : 
( )
1/ 4
3
1/ 2 1/ 3
5 8 27
??
+
??
??
 
 (1) 3 (2) 27 (3) 8 (4) 5 
 
120. The numbers 2, 3, 4, 4, 2x + 1, 5,5, 6, 7 are written in ascending order. If the median is 5, then find x. 
 (1) 2 (2) 3 (3) 4 (4) 5 
 
121.Lactometer is instrument which works on the principle of? 
 (1) Law of Floatation (2) Newton’s Law (3) Ohm’s Law (4) Avogadro’s Law 
 
122. A 250 kg bike is ridden by a circus man at a speed of 20 m/sec. in a circular path of diameter 100 m. Calculate its  
 acceleration. 
 (1) 4 m /sec
2
 (2) 6 m/sec
2
 (3) 8 m /sec
2
 (4) 9 m /sec
2
 
 
123. Find the odd one out: 
 (1) 
15
30.8 10 m ? (2) 
15
9.46 10 m ? (3) 
11
1.496 10 m ? (4) 
16
3.08 10 m ? 
 
124. The spectacular glow of diamond is due to: 
 (1) Refraction (2) Reflection  
 (3) Total Internal Reflection (4) Scattering of Light 
 
125. A song was heard by a person who is at certain distance from a temple wherein the frequency of the sound is 3 kHz  
 and the wavelength 20 cm. If the sound reaches the person in 5 seconds find the distance travelled by the sound.  
 (1) 5 km (2) 2 km (3) 4 km  (4) 3 km 
 
126. If a current of 5 A flows through the heater and the amount of heat produced is 54000 J in 6 minutes, then find the  
 resistance of the electric heater. 
 (1) 6 ? (2) 5 ? (3) 7 ? (4) 4 ?  
 
 
 
 
 
 
 
127. Match the following: 
  
(a) Formation of real and inverted 
image of objects 
(i) Pupil 
 
 
   
 
(b) Controls the amount of light 
entering the pupil 
(ii) Cornea 
(c) Pathway of the light to retina (iii) Iris 
(d) Refracts or bends the light onto 
the lens 
(iv) Retina 
 (1) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) (2) (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i) 
 (3) (a) – (iii), (b) – (iv), (c) – (ii), (d) – (iv) (4) (a) – (ii), (b) – (i), (c) – (iii), (d) – (iv) 
 
128.  Pick out the correct pair/pairs: 
  
(a) Radiation -  Heat is transferred in the form of waves. It can occur even in vacuum. 
(b) Conduction -  Transfer of heat in fluids. It doesn’t take place in vacuum 
(c) Convection - Transfer of heat in solids. It can occur in vacuum. 
 (1) (a) only (2) (b) and (c) only (3) (a) and (c) only (4) (c) only 
 
129. Correct the given statement.  
 The spectral lines having frequency equal to the incident ray frequency is called ‘Raman Lines’. 
 (1) Rayleigh Lines (2) Stokes Lines (3) Anti Stokes Lines (4) Tyndall Effect 
 
130. The only moon in the solar system that moves in the opposite direction to the direction in which its planet spins? 
 (1) Sputnik (2) Titan (3) Ganymede (4) Triton 
 
131. The reason for using red light in traffic signals to stop vehicles. 
 (1) Red light has shorter wavelength  (2) Red light has longer wavelength 
 (3) Red light is very bright and attractive  (4) Red light has highest angle of refraction 
 
132. Which one of the following is not related to Joule’s Law of Heating? 
 (1) H = I
2
Rt (2) H = VIt (3) H = VIRt
2
 (4) H = VQ 
 
133. Convert 1 Kilowatt into Horespower: 
 (1) 1.43 HP (2) 746000 HP (3) 1.34 HP (4) 0.746 HP 
 
134. Pick the odd one out: 
 (1) CCl4 (2) NaCl (3) CuCl2 (4) CaCl2 
 
135. Match the following: 
  
(a) Tydall Effect (i) Separates blood cells 
from blood samples 
(b) Brownian Movement (ii) Separates different 
coloured dyes 
(c) Centrifugation (iii) Colloidal particles moves 
in zig – zag direction 
(d) Paper 
Chromatography 
(iv) Not observed in true 
solution 
 
 (1) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) (2) (a) – (iii), (b) – (iv), (c) – (i), (d) – (ii) 
 (3) (a) – (iii), (b) – (i), (c) – (iv), (d) – (ii) (4) (a) – (i), (b) – (iii), (c) – (ii), (d) – (iv) 
 
136. The Law of Multiple Proportion was proposed by: 
 (1) John Dalton (2) Jeremias Ritcher (3) Neil Bohr (4) Rutherford 
 
 
 
 
137. Assertion (A): Bronze is an alloy. 
 Reason (R): Alloy bears the characteristics of both metal and non – metal 
 (1) Both (A) and (R) are correct  (2) Both (A) and (R) are wrong 
 
 
   
 
 (3) (A) is correct but (R) doesn’t explain (A) (4) (A) is correct and (R) explains (A). 
 
138. Find the odd one out: 
 (1) Galvanization (2) Bessemerisation (3) Electroplating (4) Anodizing 
 
139. 2 
2
PbO C 2 Pb CO + ? + is an example of ____________ reaction. 
 (1) Reduction (2) Redox  (3) Oxidation (4) Decomposition 
 
140. The ratio of conc. HCl and conc. HNO3 in ‘King’s Water’ is: 
 (1) 4 : 1 (2) 1 : 4 (3) 3 : 1 (4) 1 : 3 
 
141. Find the incorrect pair: 
  
(1) Ammonium Hydroxide -  Removes grease stains from clothes 
(2) Calcium Hydroxide - White washing of building 
(3)  Sodium Hydroxide -  Manufacture of soap 
(4) Magnesium Hydroxide -  Manufacture of fertilizers  
  
142. Which one of the following resin codes in plastic items are unsafe? 
 (1) 1, 2, 3 (2) 3, 6, 7 (3) 3, 4, 5 (4) 5, 6, 7 
 
143. Which among the following is highly toxic and inflammable gas? 
 (1) CO (2) CO2 (3) CS2 (4) CaC2 
 
144. The reason for unstability of nano particles: 
  (1) Hydrolysis (2) Hydration (3) Combustion (4) Reduction 
 
145. Occult fingerprints are made visible by the use of ________ which turns purple.  
  (1) Cyano acrylate (2) Potassium di – chromate 
 (3) Nin – hydrin (4) Silver nitrate 
 
146. Pick out the correct formula for blue vitriol: 
 (1) CuSO4. 5H2O (2) CuSO4. 7H2O (3) CuSO4. 6H2O (4) CuSO4. 9H2O 
 
147. When exposed to sunlight, parenchyma cells may develop chloroplasts and are known as_________. 
 (1) Collenchyma (2) Chromoplast (3) Chlorenchyma (4) Aerenchyma 
 
148. Give the correct equation of photosynthesis: 
 (1) 
Photosynthesis
2 3 2 2 Chlorophyll
Na CO 2HCl 2NaCl H O CO + ? ? ? ? ? ? ? + + ? (2) 
Photosynthesis
2 2 6 12 6 2 Chlorophyll
6CO 6H O C H O 6O + ? ? ? ? ? ? ? + ? 
 (3) 
Photosynthesis
2 2 2 6 6 6 2 Chlorophyll
3H O 6CO C H O 6O + ? ? ? ? ? ? ? + ? (4) 
23
H H O H O
++
+? 
 
149. In some bacteria, outside the cell wall, there is an additional slimy protective layer called _______ made up of 
_________. 
 (1) Epiderm, monosaccharides (2) DNA, mitochondria  
 (3) Capsule, polysaccharides  (4) Ribosomes, protein 
 
150. Which is/are wrong about the adaptation of hydrophytes? 
 (1) Air chambers provide mechanical support to plant 
 (2) Floating leaves have short leaf stalk 
 (3) Roots are poorly developed 
 (4) Submerged leaves are broad and big 
 
151. ‘AYUSH’ refers to the systems of medicines of: 
 (1) Unani (2) Siddha (3) Ayurveda (4) All of the above 
 
152. Father of Plant Anatomy: 
 (1) Nehemiah Grew (2) Robin Hill (3) Sachs (4) Kolliker 
 
 
   
 
 
153. Assertion (A) : The opening and closing of the stomata is due to change in turgidity of the guard cell. 
 Reason (R) : Evaporation of water in plants through stomata in leaves is called Transpiration. 
 (1) (A) is correct and (R) is incorrect  (2) (A) is incorrect and (R) is correct 
 (3) (A) is correct but (R) doesn’t explain (A) (4) (A) is correct and (R) explains (A) 
 
154. When leech attaches itself to the body of the host, continuous supply of blood is maintained by the presence of 
_________ in its salivary gland. 
 (1) botryoidal tissue (2) Parapodia (3) Hirudin (4) Setae 
 
155. Which acts as the ‘Pacemaker of the Heart’? 
 (1) Superior Venacava (2) Sino Atrial Node (3) Aoric Arch (4) Inferior Venacava 
 
156. Pick out the incorrect pair: 
 (1) Rh Factor – Lansteiner and Wiener (2) Circulation of Blood – Dacastello and Steini 
 (3) AB Blood Group – William Harvey (4) Purkinje Fibre – Wilhelm His 
 
157. Find the odd man out: 
 (1) Jejunum (2) Ileum (3) Caccum (4) Villi 
 
158. Functions of areolar connective tissues: 
 (1) Joins skin to muscle   
 (2) Fills space inside organs. 
 (3) Provides shape to body and protects soft tissues and organs. 
 (4) Helps to repair tissues after injury 
 
159. Match the following: 
  
(a) Trypsin (i) Converts fat to smaller droplets 
(b) Amylase (ii) Acts on protein 
(c) Bile (iii) Digests fat 
(d) Lipase (iv) Breakdown starch to maltose 
 (1) (a) – (ii), (b) – (i), (c) – (iii), (d) – (iv) (2) (a) – (iii), (b)  - (ii), (c) – (i), (d) – (iv) 
 (3) (a) – (ii), (b) – (iv), (c) – (i), (d) – (iii) (4) (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i) 
 
160. Which among the following has three chambered heart? 
 (1) Tiger (2) Rat (3) Frog (4) Fish 
 
161. ‘Never was so much owed by so many to so few’ was the saying of: 
 (1) Mussolini  (2) Hitler (3) Wiston Churchill (4) Woodrow Wilson 
 
162. Match the following: 
  
(a) Chinese civilization (i) Hammurabi’s Law Code 
(b) Mesopotamian civilization (ii) Invention of Gun Powder 
(c) Indus Valley civilization (iii) The Great Sphinx 
(d) Egyptian civilization (iv) Developed the system of 
weights and measures 
 (1) (a) – (ii), (b) – (i), (c) – (iv), (d) – (iii) (2) (a) – (ii), b – (iii), (c) – (iv), (d) – (i) 
 (3) (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) (4) (a) – (i), b – (ii), (c) – (iii), (d) – (iv) 
 
163. Find the odd one out: 
 (1) Kurinjipattu (2) Pattinapalai (3) Aingurunuru (4) Nedunal Vadai 
 
164. Identify the two cities in India which started declining power of the European Companies: 
 (1) Madras and Bombay  (2) Calcutta and Madras  
 (3) Surat and Hoogly (4) Hoogly and Madras