Page 1
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
ANSWER KEYS (SET – C)
1. 4 2. 3 3. 2 4. 2
5 4 6. 4 7. 2 8. 2
9. 4 10. 3 11. 4 12. 3
13. ? 14. 4 15. 2 16. 3
17. 3 18. 2 19. 2 20. 1
21. ? 22. ? 23. 1 24. 2
25. 3 26. 3 27 2 28. 3
29. 1 30. 3 31. 2 32. 3
33. 2 34. 1 35. 1 36. 3
37. 4 38. 3 39. 4 40. 1
41. 4 42. 4 43. 2 44. 3
45. 3 46. 1 47. 3 48. 2
49. 4 50. 3 51. 1 52. 2
53. 2 54. 1 55. 4 56. 3
57. 2 58. 3 59. 1 60. 4
61. 3 62. 1 63. 3 64. 2
65. 3 66. 1 67. 1 and 3 68. 2
69. 4 70. 1 71. 4 72. 1
73. 4 74. 2 75. 4 76. 4
77. 1 78. 1 79. 4 80. 1
81. 1 82. 3 83. 3 84. 4
85. 1 86. 3 87. 3 88. 4
89. 3 90. 1 91. 2 92. 4
93. 1 94. 3 95. 3 and 4 96. 4
97. 2 98. 2 99. 2 100. 4
?Observations:
13. Incorrect Question
21. No option is correct
22. Incorrect Question
Page 2
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
ANSWER KEYS (SET – C)
1. 4 2. 3 3. 2 4. 2
5 4 6. 4 7. 2 8. 2
9. 4 10. 3 11. 4 12. 3
13. ? 14. 4 15. 2 16. 3
17. 3 18. 2 19. 2 20. 1
21. ? 22. ? 23. 1 24. 2
25. 3 26. 3 27 2 28. 3
29. 1 30. 3 31. 2 32. 3
33. 2 34. 1 35. 1 36. 3
37. 4 38. 3 39. 4 40. 1
41. 4 42. 4 43. 2 44. 3
45. 3 46. 1 47. 3 48. 2
49. 4 50. 3 51. 1 52. 2
53. 2 54. 1 55. 4 56. 3
57. 2 58. 3 59. 1 60. 4
61. 3 62. 1 63. 3 64. 2
65. 3 66. 1 67. 1 and 3 68. 2
69. 4 70. 1 71. 4 72. 1
73. 4 74. 2 75. 4 76. 4
77. 1 78. 1 79. 4 80. 1
81. 1 82. 3 83. 3 84. 4
85. 1 86. 3 87. 3 88. 4
89. 3 90. 1 91. 2 92. 4
93. 1 94. 3 95. 3 and 4 96. 4
97. 2 98. 2 99. 2 100. 4
?Observations:
13. Incorrect Question
21. No option is correct
22. Incorrect Question
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
HINTS & SOLUTIONS (SET – C)
1. 4
1. gravitational field inside the spherical shell is zero. So, force is zero.
2. 3
2. Plaster of Paris is hygroscopic and absorbs water readily.
3. 2
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when
treated with Na metal;
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2
gas.
4. 2
5. 4
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons.
6. 4
7. 2
8. 2
8. Organ which look different and perform different functions but have similar basic structure
and origin are called Homologous organs.
9. 4
9. N – W = m(3g) ; W = mg
N = 4W
10. 3
10. In human male, scrotum is called thermo regulator.
11. 4
12. 3
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum.
13. ? (best possible answer is option (2) if the question is
3
a 3b
28 10 3 7 4 3
=+
+ - -
.
13.
3
a 3b
28 10 3 7 4 3
=+
+ - -
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
Page 3
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
ANSWER KEYS (SET – C)
1. 4 2. 3 3. 2 4. 2
5 4 6. 4 7. 2 8. 2
9. 4 10. 3 11. 4 12. 3
13. ? 14. 4 15. 2 16. 3
17. 3 18. 2 19. 2 20. 1
21. ? 22. ? 23. 1 24. 2
25. 3 26. 3 27 2 28. 3
29. 1 30. 3 31. 2 32. 3
33. 2 34. 1 35. 1 36. 3
37. 4 38. 3 39. 4 40. 1
41. 4 42. 4 43. 2 44. 3
45. 3 46. 1 47. 3 48. 2
49. 4 50. 3 51. 1 52. 2
53. 2 54. 1 55. 4 56. 3
57. 2 58. 3 59. 1 60. 4
61. 3 62. 1 63. 3 64. 2
65. 3 66. 1 67. 1 and 3 68. 2
69. 4 70. 1 71. 4 72. 1
73. 4 74. 2 75. 4 76. 4
77. 1 78. 1 79. 4 80. 1
81. 1 82. 3 83. 3 84. 4
85. 1 86. 3 87. 3 88. 4
89. 3 90. 1 91. 2 92. 4
93. 1 94. 3 95. 3 and 4 96. 4
97. 2 98. 2 99. 2 100. 4
?Observations:
13. Incorrect Question
21. No option is correct
22. Incorrect Question
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
HINTS & SOLUTIONS (SET – C)
1. 4
1. gravitational field inside the spherical shell is zero. So, force is zero.
2. 3
2. Plaster of Paris is hygroscopic and absorbs water readily.
3. 2
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when
treated with Na metal;
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2
gas.
4. 2
5. 4
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons.
6. 4
7. 2
8. 2
8. Organ which look different and perform different functions but have similar basic structure
and origin are called Homologous organs.
9. 4
9. N – W = m(3g) ; W = mg
N = 4W
10. 3
10. In human male, scrotum is called thermo regulator.
11. 4
12. 3
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum.
13. ? (best possible answer is option (2) if the question is
3
a 3b
28 10 3 7 4 3
=+
+ - -
.
13.
3
a 3b
28 10 3 7 4 3
=+
+ - -
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
3
a 3b
3 2 3
? = +
+
( )
3 3 2 3
a 3 b
9 12
-
? = +
-
2 3 3 a 3b ? - = +
a 3, b 2 ? = - =
5a 12b 15 24 3 ? + ? - + =
14. 4
14. 2x 3y A 0 + - =
x 2y B 0 + - =
x y 1
3B 2A A 2B 4 3
==
- + - + -
x 2A 3B =-
y 2B A =-
Option 1 : ( ) ( ) 5 2A 3B 3 2B A - + -
10A 3A 15B 6B = - - +
AB ?-
Option 2 : ( ) ( ) 3 2A 3B 5 2B A - - -
6A 5A 9B 10B = + - -
11A 19B A B = - ? +
Option 3 : 3x 5y 11A 19B A B - = - ? -
Option 4 : 3x 5y 6A 5A 9B 10B + = - - +
= A + B
? Option (4) satisfies
15. 2
15. One mole CO2 = 44 g ? 2.5 moles = 2.5 × 44 = 110 g of CO 2.
16. 3
16.
3 2 2
CH CH CH C CH C H - - - - - -
OH O O
has -OH (alcohol);
O C (Ketone) and CH --
O
(aldehyde) as functional groups.
17. 3
17. v
2
= 2as
y
2
? x
V
S
18. 2
18.
1
N 9k 6 =+ ?(1)
2
N 21 k 12 =+ ( ) 2 ?
Page 4
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
ANSWER KEYS (SET – C)
1. 4 2. 3 3. 2 4. 2
5 4 6. 4 7. 2 8. 2
9. 4 10. 3 11. 4 12. 3
13. ? 14. 4 15. 2 16. 3
17. 3 18. 2 19. 2 20. 1
21. ? 22. ? 23. 1 24. 2
25. 3 26. 3 27 2 28. 3
29. 1 30. 3 31. 2 32. 3
33. 2 34. 1 35. 1 36. 3
37. 4 38. 3 39. 4 40. 1
41. 4 42. 4 43. 2 44. 3
45. 3 46. 1 47. 3 48. 2
49. 4 50. 3 51. 1 52. 2
53. 2 54. 1 55. 4 56. 3
57. 2 58. 3 59. 1 60. 4
61. 3 62. 1 63. 3 64. 2
65. 3 66. 1 67. 1 and 3 68. 2
69. 4 70. 1 71. 4 72. 1
73. 4 74. 2 75. 4 76. 4
77. 1 78. 1 79. 4 80. 1
81. 1 82. 3 83. 3 84. 4
85. 1 86. 3 87. 3 88. 4
89. 3 90. 1 91. 2 92. 4
93. 1 94. 3 95. 3 and 4 96. 4
97. 2 98. 2 99. 2 100. 4
?Observations:
13. Incorrect Question
21. No option is correct
22. Incorrect Question
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
HINTS & SOLUTIONS (SET – C)
1. 4
1. gravitational field inside the spherical shell is zero. So, force is zero.
2. 3
2. Plaster of Paris is hygroscopic and absorbs water readily.
3. 2
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when
treated with Na metal;
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2
gas.
4. 2
5. 4
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons.
6. 4
7. 2
8. 2
8. Organ which look different and perform different functions but have similar basic structure
and origin are called Homologous organs.
9. 4
9. N – W = m(3g) ; W = mg
N = 4W
10. 3
10. In human male, scrotum is called thermo regulator.
11. 4
12. 3
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum.
13. ? (best possible answer is option (2) if the question is
3
a 3b
28 10 3 7 4 3
=+
+ - -
.
13.
3
a 3b
28 10 3 7 4 3
=+
+ - -
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
3
a 3b
3 2 3
? = +
+
( )
3 3 2 3
a 3 b
9 12
-
? = +
-
2 3 3 a 3b ? - = +
a 3, b 2 ? = - =
5a 12b 15 24 3 ? + ? - + =
14. 4
14. 2x 3y A 0 + - =
x 2y B 0 + - =
x y 1
3B 2A A 2B 4 3
==
- + - + -
x 2A 3B =-
y 2B A =-
Option 1 : ( ) ( ) 5 2A 3B 3 2B A - + -
10A 3A 15B 6B = - - +
AB ?-
Option 2 : ( ) ( ) 3 2A 3B 5 2B A - - -
6A 5A 9B 10B = + - -
11A 19B A B = - ? +
Option 3 : 3x 5y 11A 19B A B - = - ? -
Option 4 : 3x 5y 6A 5A 9B 10B + = - - +
= A + B
? Option (4) satisfies
15. 2
15. One mole CO2 = 44 g ? 2.5 moles = 2.5 × 44 = 110 g of CO 2.
16. 3
16.
3 2 2
CH CH CH C CH C H - - - - - -
OH O O
has -OH (alcohol);
O C (Ketone) and CH --
O
(aldehyde) as functional groups.
17. 3
17. v
2
= 2as
y
2
? x
V
S
18. 2
18.
1
N 9k 6 =+ ?(1)
2
N 21 k 12 =+ ( ) 2 ?
First such number (greater than 100)
= 159
and other numbers will be 159, 222, 285,….,
( ) 159 63 n 1 400 ? + - ?
n 1 3.8 ? - ?
n 4.8 ??
n4 ?=
? 4 terms
19. 2
19. MCl3 ? M has +3 oxidation state, so it belongs to Aluminium family.
20. 1
20. Crura cerebri is not a part of hind brain.
21. No option is correct.
21. 2T = Mg 2T sin 60 = Mg 2T cos 30° = Mg 2T cos 60° = Mg
Mg
T
2
=
3
2T Mg
2
=
3
2T Mg
2
?=
1
2T Mg
2
?=
Mg
T
3
=
Mg
T
3
= T = Mg
Maximum tension in (IV) case.
22. ?
22. No integral values of a, b and c satisfy any of the options.
23. 1
23. Blood cells are manufactured in our bone marrow.
24. 2
24. ( )
4
a sin cos = ? - ?
( )
2
22
sin cos 2sin cos = ? + ? - ? ?
( ) 1 2sin cos = - ? ?
22
1 4sin cos 4sin cos = - ? ? + ? ?
66
b sin cos = ? + ?
( ) ( )
33
22
sin cos = ? + ?
( ) ( )
2 2 4 4 2 2
sin cos sin cos sin cos = ? + ? ? + ? - ? ?
( )
( )
2
2 2 2 2
sin cos 3sin cos = ? + ? - ? ?
22
1 3sin cos = - ? ?
( )
2
c sin cos = ? + ? 1 2sin cos = + ? ?
2 2 2 2
3a 4b 6c 3 12sin cos 12sin cos 4 12sin cos 6 12sin cos 13 + + = - ? ? + ? ? + - ? ? + + ? ? =
3a 4b 6c 13 + + = lies between 9 and 16
? lies between 3 and 4
25. 3
25. geff is zero.
Page 5
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
ANSWER KEYS (SET – C)
1. 4 2. 3 3. 2 4. 2
5 4 6. 4 7. 2 8. 2
9. 4 10. 3 11. 4 12. 3
13. ? 14. 4 15. 2 16. 3
17. 3 18. 2 19. 2 20. 1
21. ? 22. ? 23. 1 24. 2
25. 3 26. 3 27 2 28. 3
29. 1 30. 3 31. 2 32. 3
33. 2 34. 1 35. 1 36. 3
37. 4 38. 3 39. 4 40. 1
41. 4 42. 4 43. 2 44. 3
45. 3 46. 1 47. 3 48. 2
49. 4 50. 3 51. 1 52. 2
53. 2 54. 1 55. 4 56. 3
57. 2 58. 3 59. 1 60. 4
61. 3 62. 1 63. 3 64. 2
65. 3 66. 1 67. 1 and 3 68. 2
69. 4 70. 1 71. 4 72. 1
73. 4 74. 2 75. 4 76. 4
77. 1 78. 1 79. 4 80. 1
81. 1 82. 3 83. 3 84. 4
85. 1 86. 3 87. 3 88. 4
89. 3 90. 1 91. 2 92. 4
93. 1 94. 3 95. 3 and 4 96. 4
97. 2 98. 2 99. 2 100. 4
?Observations:
13. Incorrect Question
21. No option is correct
22. Incorrect Question
NTSE STAGE – I (HARYANA STATE)
(For Class – X)
SCHOLASTIC APTITUDE TEST (SAT)
HINTS & SOLUTIONS (SET – C)
1. 4
1. gravitational field inside the spherical shell is zero. So, force is zero.
2. 3
2. Plaster of Paris is hygroscopic and absorbs water readily.
3. 2
3. X = C 2H 5OH (Alcohol); Y = CH 3COOH (Carboxylic Acid); Both X, Y liberate H 2 (A) when
treated with Na metal;
3 3 3 2 2
CH COOH NaHCO CH COONa H O CO . + ? ? ? + + ? So B is CO 2
gas.
4. 2
5. 4
5. Cl 1 e Cl ,
--
+ ? ? ? with configuration 2, 8, 8 ? 8 valence electrons.
6. 4
7. 2
8. 2
8. Organ which look different and perform different functions but have similar basic structure
and origin are called Homologous organs.
9. 4
9. N – W = m(3g) ; W = mg
N = 4W
10. 3
10. In human male, scrotum is called thermo regulator.
11. 4
12. 3
12. Slope of P–t graph is maximum at R. So, instantaneous force is maximum.
13. ? (best possible answer is option (2) if the question is
3
a 3b
28 10 3 7 4 3
=+
+ - -
.
13.
3
a 3b
28 10 3 7 4 3
=+
+ - -
( ) ( )
3
a 3b
5 3 2 3
? = +
+ - -
3
a 3b
3 2 3
? = +
+
( )
3 3 2 3
a 3 b
9 12
-
? = +
-
2 3 3 a 3b ? - = +
a 3, b 2 ? = - =
5a 12b 15 24 3 ? + ? - + =
14. 4
14. 2x 3y A 0 + - =
x 2y B 0 + - =
x y 1
3B 2A A 2B 4 3
==
- + - + -
x 2A 3B =-
y 2B A =-
Option 1 : ( ) ( ) 5 2A 3B 3 2B A - + -
10A 3A 15B 6B = - - +
AB ?-
Option 2 : ( ) ( ) 3 2A 3B 5 2B A - - -
6A 5A 9B 10B = + - -
11A 19B A B = - ? +
Option 3 : 3x 5y 11A 19B A B - = - ? -
Option 4 : 3x 5y 6A 5A 9B 10B + = - - +
= A + B
? Option (4) satisfies
15. 2
15. One mole CO2 = 44 g ? 2.5 moles = 2.5 × 44 = 110 g of CO 2.
16. 3
16.
3 2 2
CH CH CH C CH C H - - - - - -
OH O O
has -OH (alcohol);
O C (Ketone) and CH --
O
(aldehyde) as functional groups.
17. 3
17. v
2
= 2as
y
2
? x
V
S
18. 2
18.
1
N 9k 6 =+ ?(1)
2
N 21 k 12 =+ ( ) 2 ?
First such number (greater than 100)
= 159
and other numbers will be 159, 222, 285,….,
( ) 159 63 n 1 400 ? + - ?
n 1 3.8 ? - ?
n 4.8 ??
n4 ?=
? 4 terms
19. 2
19. MCl3 ? M has +3 oxidation state, so it belongs to Aluminium family.
20. 1
20. Crura cerebri is not a part of hind brain.
21. No option is correct.
21. 2T = Mg 2T sin 60 = Mg 2T cos 30° = Mg 2T cos 60° = Mg
Mg
T
2
=
3
2T Mg
2
=
3
2T Mg
2
?=
1
2T Mg
2
?=
Mg
T
3
=
Mg
T
3
= T = Mg
Maximum tension in (IV) case.
22. ?
22. No integral values of a, b and c satisfy any of the options.
23. 1
23. Blood cells are manufactured in our bone marrow.
24. 2
24. ( )
4
a sin cos = ? - ?
( )
2
22
sin cos 2sin cos = ? + ? - ? ?
( ) 1 2sin cos = - ? ?
22
1 4sin cos 4sin cos = - ? ? + ? ?
66
b sin cos = ? + ?
( ) ( )
33
22
sin cos = ? + ?
( ) ( )
2 2 4 4 2 2
sin cos sin cos sin cos = ? + ? ? + ? - ? ?
( )
( )
2
2 2 2 2
sin cos 3sin cos = ? + ? - ? ?
22
1 3sin cos = - ? ?
( )
2
c sin cos = ? + ? 1 2sin cos = + ? ?
2 2 2 2
3a 4b 6c 3 12sin cos 12sin cos 4 12sin cos 6 12sin cos 13 + + = - ? ? + ? ? + - ? ? + + ? ? =
3a 4b 6c 13 + + = lies between 9 and 16
? lies between 3 and 4
25. 3
25. geff is zero.
26. 3
27. 2
27. Osmoregulation is the process of maintaining proper amount of water and proper ionic
balance in the body.
28. 3
29. 1
30. 3
31. 2
31. Arthritis is a chronic disease.
32. 3
32. First common term = 10
12
d 3, d 8 ==
? difference in series of common terms
= l.c. m of
1
d and
2
d
= 24
? Common term series
= 10, 34, 58
100
th
term of series 1 ( ) 1 99 3 =+
= 298
( ) 10 24 n 1 298 + - ?
( ) 24 n 1 288 -?
( ) n 1 12 -?
n 13 ?
n 13 =
33. 2
34. 1
34. Using Fleming’s left hand rule.
35. 1
35.
s
P
V
?
=
?
? ? Density
Due to presence of water molecules, density of air decreases.
36. 3
36.
o
360
40
N
?
N9 ?
( ) 180 N 2 1980 -?
N 2 11 -?
N 13 ?
N can be equal to 10, 11 or 12.
? N can take 3 values.
37. 4
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