Sample Question Paper 9 - Math, Class 12

# Sample Question Paper 9 - Math, Class 12 | Mathematics (Maths) Class 12 - JEE PDF Download

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``` Page 1

CBSE XII | Mathematics
Sample Paper – 9

www.topperlearning.com  1
Mathematics
Class XII
Sample Paper – 9
Time: 3 hours                    Total Marks: 100

1. All questions are compulsory.
2. The question paper consist of 29 questions divided into three sections A, B, C and D.
Section A comprises of 4 questions of one mark each, section B comprises of 8
questions of two marks each, section C comprises of  11 questions of four marks
each and section D comprises of 6 questions of six marks each.
3. Use of calculators is not permitted.

SECTION – A

1. Write the element which is denoted by a32 in the given matrix
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??

2. Differentiate sin (cos x) w.r.t. x
3. Is the differential equation given by
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give
reason.
4. Find the angle between following pairs of line
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ?

OR

Find the angle between following pairs of line
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??

Page 2

CBSE XII | Mathematics
Sample Paper – 9

www.topperlearning.com  1
Mathematics
Class XII
Sample Paper – 9
Time: 3 hours                    Total Marks: 100

1. All questions are compulsory.
2. The question paper consist of 29 questions divided into three sections A, B, C and D.
Section A comprises of 4 questions of one mark each, section B comprises of 8
questions of two marks each, section C comprises of  11 questions of four marks
each and section D comprises of 6 questions of six marks each.
3. Use of calculators is not permitted.

SECTION – A

1. Write the element which is denoted by a32 in the given matrix
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??

2. Differentiate sin (cos x) w.r.t. x
3. Is the differential equation given by
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give
reason.
4. Find the angle between following pairs of line
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ?

OR

Find the angle between following pairs of line
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??

CBSE XII | Mathematics
Sample Paper – 9

SECTION – B

5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all
non-negative real numbers. Show that f is invertible. Also find the inverse of f.
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B.
7.  Evaluate:

x
x 2x
e
dx.
5 4e e
?
??

8.  Evaluate:
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?

OR
Evaluate:
2
3
x
dx
1x
?
?

9.  Form the differential equation y
2
= m(a
2
- x
2
) by eliminating parameters m and a
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is
r. 3i 4j 12k 13 0

OR
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ?
11. The probability that a student entering a university graduates is 0.4. Find the
probability that out of 3 students of the university:
i. None will graduate
ii. Only one will graduate
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4
black balls. A ball is drawn from the first bag and without seeing its colour, is put in
the second bag. Find the probability that if now a ball is drawn from the second bag,
it is black in colour.
OR
Page 3

CBSE XII | Mathematics
Sample Paper – 9

www.topperlearning.com  1
Mathematics
Class XII
Sample Paper – 9
Time: 3 hours                    Total Marks: 100

1. All questions are compulsory.
2. The question paper consist of 29 questions divided into three sections A, B, C and D.
Section A comprises of 4 questions of one mark each, section B comprises of 8
questions of two marks each, section C comprises of  11 questions of four marks
each and section D comprises of 6 questions of six marks each.
3. Use of calculators is not permitted.

SECTION – A

1. Write the element which is denoted by a32 in the given matrix
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??

2. Differentiate sin (cos x) w.r.t. x
3. Is the differential equation given by
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give
reason.
4. Find the angle between following pairs of line
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ?

OR

Find the angle between following pairs of line
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??

CBSE XII | Mathematics
Sample Paper – 9

SECTION – B

5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all
non-negative real numbers. Show that f is invertible. Also find the inverse of f.
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B.
7.  Evaluate:

x
x 2x
e
dx.
5 4e e
?
??

8.  Evaluate:
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?

OR
Evaluate:
2
3
x
dx
1x
?
?

9.  Form the differential equation y
2
= m(a
2
- x
2
) by eliminating parameters m and a
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is
r. 3i 4j 12k 13 0

OR
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ?
11. The probability that a student entering a university graduates is 0.4. Find the
probability that out of 3 students of the university:
i. None will graduate
ii. Only one will graduate
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4
black balls. A ball is drawn from the first bag and without seeing its colour, is put in
the second bag. Find the probability that if now a ball is drawn from the second bag,
it is black in colour.
OR

CBSE XII | Mathematics
Sample Paper – 9

A doctor is to visit a patient. Form past experience, it is known that the probabilities
that he will come by train, bus, scooter or by other means of transport are
respectively
3 1 1 2
, , and
10 5 10 5
. The probabilities that he will be late are
1 1 1
, and
4 3 12
if
he comes by train, bus and scooter respectively. But if he comes by other means of
transport, then he will not be late. When he arrives, he is late. What is the
probability that the doctor came by train?

SECTION – C

13.
(i) If f: N ? Z s.t f(x) = x and g: Z ? Z s.t g(x) = |x|.
Show that gof is injective but g is not.
(ii) If f: N ? N s.t f(x) = x + 1 and g: N ? N s.t g(x) =
x 1 if x 1
1 if x 1
?? ?
?
?
?
.
Show that g of is subjective but f is not.

OR
Show that the function f :R R ? defined by
2x 1
f(x) , x R
3
?
?? is one-one and
onto function. Also find the inverse of the function

f.

14. Solve the equation.
sin
-1
(1 – x) – 2 sin
-1
x =
2
?

15. ??
23
23
23
x x 1+x
If x, y, and z are different  and y y 1+y 0; show that xyz = 1
z z 1+z

16. Differentiate
x
x
x w.r.t. x
OR

If
? ? ? ?
tanx secx dy
y sinx cosx ,find
dx
??

Page 4

CBSE XII | Mathematics
Sample Paper – 9

www.topperlearning.com  1
Mathematics
Class XII
Sample Paper – 9
Time: 3 hours                    Total Marks: 100

1. All questions are compulsory.
2. The question paper consist of 29 questions divided into three sections A, B, C and D.
Section A comprises of 4 questions of one mark each, section B comprises of 8
questions of two marks each, section C comprises of  11 questions of four marks
each and section D comprises of 6 questions of six marks each.
3. Use of calculators is not permitted.

SECTION – A

1. Write the element which is denoted by a32 in the given matrix
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??

2. Differentiate sin (cos x) w.r.t. x
3. Is the differential equation given by
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give
reason.
4. Find the angle between following pairs of line
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ?

OR

Find the angle between following pairs of line
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??

CBSE XII | Mathematics
Sample Paper – 9

SECTION – B

5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all
non-negative real numbers. Show that f is invertible. Also find the inverse of f.
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B.
7.  Evaluate:

x
x 2x
e
dx.
5 4e e
?
??

8.  Evaluate:
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?

OR
Evaluate:
2
3
x
dx
1x
?
?

9.  Form the differential equation y
2
= m(a
2
- x
2
) by eliminating parameters m and a
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is
r. 3i 4j 12k 13 0

OR
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ?
11. The probability that a student entering a university graduates is 0.4. Find the
probability that out of 3 students of the university:
i. None will graduate
ii. Only one will graduate
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4
black balls. A ball is drawn from the first bag and without seeing its colour, is put in
the second bag. Find the probability that if now a ball is drawn from the second bag,
it is black in colour.
OR

CBSE XII | Mathematics
Sample Paper – 9

A doctor is to visit a patient. Form past experience, it is known that the probabilities
that he will come by train, bus, scooter or by other means of transport are
respectively
3 1 1 2
, , and
10 5 10 5
. The probabilities that he will be late are
1 1 1
, and
4 3 12
if
he comes by train, bus and scooter respectively. But if he comes by other means of
transport, then he will not be late. When he arrives, he is late. What is the
probability that the doctor came by train?

SECTION – C

13.
(i) If f: N ? Z s.t f(x) = x and g: Z ? Z s.t g(x) = |x|.
Show that gof is injective but g is not.
(ii) If f: N ? N s.t f(x) = x + 1 and g: N ? N s.t g(x) =
x 1 if x 1
1 if x 1
?? ?
?
?
?
.
Show that g of is subjective but f is not.

OR
Show that the function f :R R ? defined by
2x 1
f(x) , x R
3
?
?? is one-one and
onto function. Also find the inverse of the function

f.

14. Solve the equation.
sin
-1
(1 – x) – 2 sin
-1
x =
2
?

15. ??
23
23
23
x x 1+x
If x, y, and z are different  and y y 1+y 0; show that xyz = 1
z z 1+z

16. Differentiate
x
x
x w.r.t. x
OR

If
? ? ? ?
tanx secx dy
y sinx cosx ,find
dx
??

CBSE XII | Mathematics
Sample Paper – 9

17. Differentiate
2
cot x
2
2x 3
x
x x 2
?
?
??
w.r.t. x
18. Find the interval in which the function
4sin
y ,0 ,
2 cos
?
? ? ? ? ? ? ?
??
is an increasing
function of ?.
19. Evaluate:
2
42
x
dx
x x 2

20. Evaluate:
? ?
2x 2
0
x e dx
?
? using integral as limit of sums.
21. Solve the initial value problem: (x + y + 1)
2
dy = dx, y(-1) = 0

OR

Solve the initial value problem: (x - y)(dy + dx) =dx – dy , y(0) = -1
22. Let
ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ
a i 4j 2k, b 3i 2j 7k and c 2i j 4k ? ? ? ? ? ? ? ? ? . Find a vector d which is
perpendicular to both a and b and c.d 15 ? .
23.  Find the value of ? so that the lines,
1 x y 2 z 3 x 1 y 1 6 z
and
3 2 2 3 1 7
? ? ? ? ? ?
? ? ? ?
??

are perpendicular to each other.

SECTION – D

24. If
1 1 0
A 2 1 3
1 2 1
?? ??
??
?
??
??
??
and
1 2 3
B 2 1 3
011
??
??
?
??
??
??
, show that ( A + B )
T
= A
T
+ B
T

OR
If
1 1 1
A 2 2 3
1 0 2
? ??
??
??
??
?? ?
??
and
4 2 1
B 1 1 1
2 1 0
?? ??
??
??
??
?? ?
??
, find AB and BA.

Page 5

CBSE XII | Mathematics
Sample Paper – 9

www.topperlearning.com  1
Mathematics
Class XII
Sample Paper – 9
Time: 3 hours                    Total Marks: 100

1. All questions are compulsory.
2. The question paper consist of 29 questions divided into three sections A, B, C and D.
Section A comprises of 4 questions of one mark each, section B comprises of 8
questions of two marks each, section C comprises of  11 questions of four marks
each and section D comprises of 6 questions of six marks each.
3. Use of calculators is not permitted.

SECTION – A

1. Write the element which is denoted by a32 in the given matrix
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??

2. Differentiate sin (cos x) w.r.t. x
3. Is the differential equation given by
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give
reason.
4. Find the angle between following pairs of line
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ?

OR

Find the angle between following pairs of line
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??

CBSE XII | Mathematics
Sample Paper – 9

SECTION – B

5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all
non-negative real numbers. Show that f is invertible. Also find the inverse of f.
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B.
7.  Evaluate:

x
x 2x
e
dx.
5 4e e
?
??

8.  Evaluate:
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?

OR
Evaluate:
2
3
x
dx
1x
?
?

9.  Form the differential equation y
2
= m(a
2
- x
2
) by eliminating parameters m and a
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is
r. 3i 4j 12k 13 0

OR
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ?
11. The probability that a student entering a university graduates is 0.4. Find the
probability that out of 3 students of the university:
i. None will graduate
ii. Only one will graduate
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4
black balls. A ball is drawn from the first bag and without seeing its colour, is put in
the second bag. Find the probability that if now a ball is drawn from the second bag,
it is black in colour.
OR

CBSE XII | Mathematics
Sample Paper – 9

A doctor is to visit a patient. Form past experience, it is known that the probabilities
that he will come by train, bus, scooter or by other means of transport are
respectively
3 1 1 2
, , and
10 5 10 5
. The probabilities that he will be late are
1 1 1
, and
4 3 12
if
he comes by train, bus and scooter respectively. But if he comes by other means of
transport, then he will not be late. When he arrives, he is late. What is the
probability that the doctor came by train?

SECTION – C

13.
(i) If f: N ? Z s.t f(x) = x and g: Z ? Z s.t g(x) = |x|.
Show that gof is injective but g is not.
(ii) If f: N ? N s.t f(x) = x + 1 and g: N ? N s.t g(x) =
x 1 if x 1
1 if x 1
?? ?
?
?
?
.
Show that g of is subjective but f is not.

OR
Show that the function f :R R ? defined by
2x 1
f(x) , x R
3
?
?? is one-one and
onto function. Also find the inverse of the function

f.

14. Solve the equation.
sin
-1
(1 – x) – 2 sin
-1
x =
2
?

15. ??
23
23
23
x x 1+x
If x, y, and z are different  and y y 1+y 0; show that xyz = 1
z z 1+z

16. Differentiate
x
x
x w.r.t. x
OR

If
? ? ? ?
tanx secx dy
y sinx cosx ,find
dx
??

CBSE XII | Mathematics
Sample Paper – 9

17. Differentiate
2
cot x
2
2x 3
x
x x 2
?
?
??
w.r.t. x
18. Find the interval in which the function
4sin
y ,0 ,
2 cos
?
? ? ? ? ? ? ?
??
is an increasing
function of ?.
19. Evaluate:
2
42
x
dx
x x 2

20. Evaluate:
? ?
2x 2
0
x e dx
?
? using integral as limit of sums.
21. Solve the initial value problem: (x + y + 1)
2
dy = dx, y(-1) = 0

OR

Solve the initial value problem: (x - y)(dy + dx) =dx – dy , y(0) = -1
22. Let
ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ
a i 4j 2k, b 3i 2j 7k and c 2i j 4k ? ? ? ? ? ? ? ? ? . Find a vector d which is
perpendicular to both a and b and c.d 15 ? .
23.  Find the value of ? so that the lines,
1 x y 2 z 3 x 1 y 1 6 z
and
3 2 2 3 1 7
? ? ? ? ? ?
? ? ? ?
??

are perpendicular to each other.

SECTION – D

24. If
1 1 0
A 2 1 3
1 2 1
?? ??
??
?
??
??
??
and
1 2 3
B 2 1 3
011
??
??
?
??
??
??
, show that ( A + B )
T
= A
T
+ B
T

OR
If
1 1 1
A 2 2 3
1 0 2
? ??
??
??
??
?? ?
??
and
4 2 1
B 1 1 1
2 1 0
?? ??
??
??
??
?? ?
??
, find AB and BA.

CBSE XII | Mathematics
Sample Paper – 9

25.  Show that the right circular cone of least curved surface and given volume has an
altitude equal to 2 times the radius of the base.
26.  Find the smaller of the two areas in which the circle x
2
+ y
2
= 2a
2
is divided by the
parabola y
2
= ax, a > 0.
OR

Find the area of the region {(x, y): y
2
? 6x, 4x
2
+ 4y
2
?  64}

27. Find a point on the line
x 2 y 1 z 3
3 2 2
, which is at the distance of 32 units, from
the point (1, 2, 3).
OR

Find the value of p, so that the lines
1
1 x 7y 14 z 3
l:
3 p 2
? ? ?
?? and
2
7 7x y 5 6 z
l:
3p 1 5
? ? ?
??
are perpendicular to each other. Also find the equations of a line passing through
a point (3, 2, - 4) and parallel to line l1.

28. A nutritionist has to develop a special diet using two foods P and Q. Each packet
(containing 30g) of food P contains 12 units of calcium, 4 units of iron, 6 units of
cholesterol and 6 units of vitamin A. Each packet of the same quantity of food Q
contains 3 units of calcium, 20 units of iron, 4 units of cholesterol and 3 units of
vitamin A. The diet requires at least 240 units of calcium, atleast 460 units of iron
and atmost 300 units of cholesterol. How many packet of each food should be used
to minimise the amount of vitamin A in the diet? What is the minimum amount of
vitamin A?
29. A bag contains 25 balls of which 10 are purple and the remaining are pink. A ball is
drawn at random, its colour is noted and it is replaced. 6 balls are drawn in this way,
find the probability that
i. All balls were purple
ii. Not more than 2 were pink
iii. An equal number of purple and pink balls were drawn.
iv. Atleast one ball was pink

```

## Mathematics (Maths) Class 12

204 videos|288 docs|139 tests

## FAQs on Sample Question Paper 9 - Math, Class 12 - Mathematics (Maths) Class 12 - JEE

 1. What are the important topics to study in Class 12 Math?
Ans. Some important topics to study in Class 12 Math are Calculus, Algebra, Probability, Linear Programming, Matrices, and Vectors.
 2. How can I improve my problem-solving skills in Math?
Ans. To improve problem-solving skills in Math, one can practice solving a variety of math problems regularly, understand the concepts thoroughly, seek help from teachers or peers when needed, and analyze the solutions of solved problems to understand the approach and logic behind them.
 3. How should I manage my time during the Math exam?
Ans. To manage time during the Math exam, it is important to allocate specific time limits for each section or question based on their weightage. Start with the easier questions to gain confidence and then move on to the more challenging ones. If you get stuck on a question, move on and come back to it later. Also, make sure to keep some time for reviewing your answers before submitting the exam.
 4. Are there any helpful resources or books for Class 12 Math preparation?
Ans. Yes, there are several helpful resources and books for Class 12 Math preparation. Some popular books include "Mathematics for Class 12" by R.D. Sharma, "NCERT Exemplar Problems: Solutions Mathematics Class 12" by Arihant Experts, and "Mathematics for Class 12" by R.S. Aggarwal. Additionally, online platforms and websites such as Khan Academy, BYJU'S, and Vedantu offer comprehensive study materials, tutorials, and practice questions.
 5. How can I score well in the Class 12 Math exam?
Ans. To score well in the Class 12 Math exam, it is crucial to understand the concepts thoroughly. Regular practice, solving previous years' question papers and sample papers, seeking help from teachers or tutors when needed, and maintaining a consistent study schedule can greatly improve your chances of scoring well. Additionally, it is important to stay calm and focused during the exam and manage your time effectively.

## Mathematics (Maths) Class 12

204 videos|288 docs|139 tests

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