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## Class 12 Maths MCQs Multiple Choice Questions with Answers

Here are the chapterwise CBSE MCQ Quiz Test Questions for Class 12th Maths in pdf format that helps you access & download so that you can practice online/offline easily.

#### Application Of Derivatives Class 12 Engineering Maths MCQ Quiz ### Application Of Derivatives Questions and Answers

Application Of Derivatives Quiz Question Answer
The curve for which the ratio of the length of the segment by any tangent on the $$Y-$$axis to the length of the radius vector is constant $$(K)$$, is $$(y+\sqrt {x^2 +y^2})x^{k-1}=c$$
The points on the curve $$9 y^{2} = x^{3}$$, where the normal to the curve makes equal intercepts with the axes are ........... $$\left ( 4, \dfrac{-8}{3} \right )$$
The angle between the tangents at ant point P and the line joining P to the original, where P is a point on the curve in $$(x^{2}+y^{2})=c \tan ^{-1}\dfrac{y}{x},c$$ is a constnt, is  independent of x
The slope of the tangent to the curve at a point $$(x,y)$$ on it is proportional to $$(x-2).$$ If the slope of the tangent to the curve at $$(10,-9)$$  on it is $$-3$$. The equation of the curves is . $$y=\dfrac{-3}{16}(x-2)^2+3$$
The tangent at the point $$(2, -2)$$ to the curve, $$x^2y^2-2x=4(1-y)$$ does not pass through the point. $$(-2, -7)$$
If the tangent to the conic, $$y - 6 = x^2$$ at (2, 10) touches the circle, $$x^2 + y^2 + 8x - 2y = k$$ (for some fixed k) at a point $$(\alpha, \beta)$$; then $$(\alpha, \beta)$$ is; $$\displaystyle \left( -\frac{8}{17}, \frac{2}{17} \right)$$
Let b be a nonzero real number. Suppose $$f : R \rightarrow R$$ is a differentiable function such that $$f(0) = 1$$.
If the derivative f' of f satisfies the equation $$f'(x) = \dfrac{f(x)}{b^2 + x^2}$$ for all $$x \in R$$, then which of the following statements is/are TRUE?
$$f\left( x \right) f\left( -x \right) =1$$ for all $$x\in R$$
What is the $$x$$-coordinate of the point on the curve $$f(x) = \sqrt {x}(7x - 6)$$, where the tangent is parallel to $$x$$-axis? $$\dfrac {2}{7}$$
Consider the following statements in respect of the function $$f(x) = x^{3} - 1, \quad x\epsilon [-1, 1]$$
I. $$f(x)$$ is increasing in $$[-1, 1]$$
II. $$f'(x)$$ has no root in $$(-1, 1)$$.
Which of the statements given above is/ are correct?
Only I
If $$\dfrac{x^2}{f(4a)}=\dfrac{y^2}{f(a^2-5)}$$ respresents and ellipse with major axis as y-axis and $$f$$ is a decreasing function, then  $$a \in (-1, 5)$$

#### Application Of Integrals Class 12 Engineering Maths MCQ Quiz ### Application Of Integrals Questions and Answers

Application Of Integrals Quiz Question Answer
Area of the region bounded by the curve $$( y - x ) ^ { 2 } = x ^ { 3 }$$ and the line $$x = 1$$ is $$\frac {4} {3}$$
Area bounded by the curves $$y=\log _{ e }{ x } \quad$$ and  $$y={ \left( \log _{ e }{ x } \right) }^{ 2 }$$ is ?
$$e-2$$
Area enclosed by the curve $$y = f ( x )$$ defined parametrical as $$x = \frac { 1 - t ^ { 2 } } { 1 + t ^ { 2 } } , y = \frac { 2 t } { 1 + t ^ { 2 } }$$ $$\pi$$ sq. units
The area (in sq units) of the region bounded by the curve $$y=\sqrt { x }$$ and the lines $$y=0,y=x-2$$, is  $$\frac { 10 }{ 3 }$$
The area bounded by the curve y=$${ x }^{ 3 },$$ x-axis and two ordinates x=1 to x=2 equal to  15/4 sq.unit
Area enclosed by the graph of the function $$y=l{ n }^{ 2 }x-1$$ lying in the $${ 4 }^{ th }$$ quadrant is $$\frac { 4 }{ e }$$
Area bounded by the curves $$y = \sin x ,$$ tangent drawn to it at $$x = 0$$ and the line $$x = \frac { \pi } { 2 }$$ is equal to $$\frac { \pi ^ { 2 } - 2 } { 2 }$$ sq.units
Area bounded by curves $$x=\sqrt{y-1}$$
and y=x+1 is -
$$\frac{1}{6} s q \cdot u n i t$$
The area of the region bounded by the curves $$y = x^2$$ and $$y = |x|$$ is $$\dfrac{1}{3}$$
The area enclosed by the line y = x + 1, X- axis and the lines x = -3 and x = 3 is  10

#### Continuity And Differentiability Class 12 Engineering Maths MCQ Quiz ### Continuity And Differentiability Questions and Answers

Continuity And Differentiability Quiz Question Answer
Let $$f\left( x \right)=x\left| x \right| ,g\left( x \right)=sinx$$ and $$h\left( x \right) =\left( gof \right) \left( x \right) .$$ Then $$h'\left( x \right)$$ is not differentiable at x=0
If $$f(x)=0$$ for $$x<0$$ and $$f(x)$$ is differentiable at $$x=0$$, then for $$x\ge 0, f(x)$$ may be $$-x^{3/2}$$
$$\frac { d }{ dx } (\sin ^{ -1 }{ \{ \frac { \sqrt { 1+x } +\sqrt { 1-x } }{ 2 } \} } )=$$ $$\frac { -1 }{ 2\sqrt { 1-{ x }^{ 2 } } }$$
If $$\mathrm{f}(\mathrm{x})$$ is a differentiable function and $$\mathrm{g}(\mathrm{x})$$ is a double differentiable function such that $$|\mathrm{f}(\mathrm{x})|\leq 1$$ and $$\mathrm{f}'(\mathrm{x})=\mathrm{g}(\mathrm{x})$$. If $$\mathrm{f}^{2}(0)+\mathrm{g}^{2}(0)=9$$such that there exists some $$\mathrm{c}\in(-3, 3)$$ such that $$\mathrm{g}(\mathrm{c}).\ \mathrm{g}''(\mathrm{c})<0$$, True or false
True
Let $$f : R \rightarrow R$$ and $$g : R \rightarrow R$$ be functions satisfying $$f(x + y) = f(x) + f(y) + f(x)f(y)$$ and $$f(x) = xg(x)$$ for all $$x, y \in R$$. If $$\underset{x \rightarrow 0}{\lim} g(x) = 1$$, then which of the following statements is/are TRUE? The derivative $${ f }^{ \prime }\left( 0 \right)$$ is equal to $$1$$
For the curve $$x = t^2 - 1, y = t^2 - t$$, tangent is parallel to $$x$$ - axis where,
$$t=\dfrac{1}{2}$$
Let F(x) = $$\left( f\left( x \right) \right) ^{ 2 }+\left( f\left( x \right) \right) ^{ 2 },F\left( 0 \right) -6$$ where f(x) is a differential  function such that $$\left| f\left( x \right) \right| \le 1\forall x\notin \left[ -1,1 \right]$$ then choose the correct statement (s) For some $$c\in \left( -1,1 \right)$$, $$F'\left( c \right) \ge 6,F"\left( c \right) \le 0$$
If $$f(x)={ sin }^{ -1 }\left[ \dfrac { 2x }{ 1+{ x }^{ 2 } } \right]$$,then $$f(x)$$ is differentiable on  R-{-1,1}
$$\displaystyle \frac{d}{dx}(\tan ^{-1}x)$$ $$\displaystyle \frac{1}{1+x^{2}}.$$
If $$\displaystyle x+y=x^{y}$$ then $$\displaystyle \frac{dy}{dx}\ equals-$$ $$\displaystyle \frac{yx^{y-1}-1}{1-x^{y}\log x}$$

#### Determinants Class 12 Engineering Maths MCQ Quiz If A is a singular matrix, then adj A is singular
If  $$A = \left( \begin{array} { l l } { 1 } & { 2 } \\ { 3 } & { 5 } \end{array} \right),$$  then the value of the determinant  $$\left| A ^ { 2009 } - 5 A ^ { 2008 } \right|$$  is $$- 6$$
If $$A=\begin{bmatrix} -4 & -1 \\ 3 & 1 \end{bmatrix}$$ then the determinant of the matrix $$\left( {A}^{2016}-2{A}^{2015}-{A}^{2014} \right)$$ is $$-2016$$
If $$A=A=\left[ \begin{matrix} a & 0 & 0 \\ 0 & a & 0 \\ 0 & 0 & a \end{matrix} \right]$$,then $$\left| A \right| \left| AdjA \right|$$ is equal to $${a}^{9}$$
If $$A$$ is a square matrix $$(adj \,A)' - (adj \,A')$$ $$2A$$
If adj B = A, |P| = |Q| = 1, then adj $$\left( { Q }^{ -1 }{ BP }^{ -1 } \right)$$ is PAQ
There are  $$12$$  points in a plane. The number of the straight lines joining any two of them when  $$3$$  of them are collinear is. $$64$$
If $$A$$ is singular matrix, then $$A.(adj\,A)$$ is  $$singular$$
If $$A$$ is $$4\times 4$$ matrix and if $$\left| \left| A \right| adj\left( \left| A \right| A \right) \right| ={ \left| A \right| }^{ n }$$, then $$n$$ is  $$11$$
If $$A=\begin{bmatrix} 5a & -b \\ 3 & 2 \end{bmatrix}$$ and $$A(adj\, A)=A{A}^{T}$$ then $$5a+3b$$ is equal to  $$5$$

#### Differential Equations Class 12 Engineering Maths MCQ Quiz ### Differential Equations Questions and Answers

The solution of $$\dfrac{dy}{dx}=2^{x-y}$$ is: $$2^{x}-2^{y}=c$$
The solution of $$(x^{2}+x)\frac{dy}{dx}=1+2x$$ is: $$e^{y}=c(x^{2}+x)$$
$$\displaystyle e^{x-y}dx+e^{^{y-x}}dy=0$$
Solve the differential equations.
$$\displaystyle e^{2x}+e^{2y}=-k$$
The solution to the differential equation $$y\ln y \, +\, xy'\, =\, 0\,$$ where$$\, y(1)\, =\, e$$, is: $$x(\ln y)\, =\, 1$$
$$x^{\frac{b-c}{bc}} . x^{\frac{c-a}{ca}} . x^{\frac{a-b}{ac}}=$$

1
The solution of $$x^{2} \cfrac{dy}{dx}=2$$ is
$$y=-\cfrac{2}{x}+c$$
Which of the following differential equation is linear ? $$(1+x)\dfrac{dy}{dx}-xy=1$$
Degree of $$\dfrac{d^{3}y}{dx^{3}}+2\left ( \dfrac{dy}{dx} \right )^{4}+\dfrac{dy}{dx}=\cos x$$ is $$1$$
The solution of $$\dfrac{dy}{dx}=e^{logx}$$ is: $$2y=x^{2}+c$$
Check whether the function is homogenous or not. If yes then find the degree of the function
$$g(x)=4-x^2$$.
Not homogenous

#### Integrals Class 12 Engineering Maths MCQ Quiz $$\int { { e }^{ x^{ 3 } }+{ x }^{ 2-1 }(3{ x }^{ 4 }+{ 2x }^{ 3 }+{ 2x }^{ 2 }\quad x=h(x)+c }$$ then the value of $$h(1)h(-1)$$. 1
$$\displaystyle \int \frac { 1 - x ^ { 2 } } { \left( 1 + x ^ { 2 } \right) \sqrt { 1 + x ^ { 4 } } } d x$$ is equal to
$$\frac { 1 } { \sqrt { 2 } } \sin ^ { - 1 } \left\{ \frac { \sqrt { 2 } x } { x ^ { 2 } + 1 } \right\} + c$$
Let $$1 _ { n } = \int _ { 0 } ^ { \frac { 1 } { 2 } } \frac { 1 } { \sqrt { 1 - x ^ { n } } } d x$$ where $$n > 2 ,$$ then
$$I _ { n } < \frac { \pi } { 6 }$$
If $${ I }_{ m }=\overset { e }{ \underset { 1 }{ \int } } (lnx)^{ m }dx,$$ where $$m\epsilon N,$$then $${ I }_{ 10 }+10{ I }_{ 9 }$$ is equal to- e
If for every integer n, $$\int _{ n }^{ n+1 }{ f(x)dx={ n }^{ 2 } }$$, then the value of $$\int _{ -2 }^{ 4 }{ f(x)dx }$$ is - 16
$$\int _{ 0 }^{ 4036 }{ \dfrac { { 2 }^{ x } }{ { 2 }^{ x }+{ 1 }^{ 4036-x } } } dx=............$$ 4035
If $${ I }_{ 1 }=\int _{ x }^{ 1 }{ \cfrac { 1 }{ 1+{ t }^{ 2 } } } dt$$ and $${ I }_{ 2 }=\int _{ 1 }^{ 1/x }{ \cfrac { 1 }{ 1+{ t }^{ 2 } } } dt$$ for x > 0, then  $${ I }_{ 1 }={ I }_{ 2 }$$
$$\frac { 1 }{ \pi } \int _{ -2 }^{ 2 }{ \frac { 1 }{ 4+{ x }^{ 2 } } dx= }$$ $$\frac { 1 }{ 4 }$$
$$\displaystyle \int_{-1}^{1}\dfrac{x^4}{1+e^{x^7}}dx$$ is $$1/5$$
Evaluate: $$\int { \sqrt { \dfrac { x }{ 4-{ x }^{ 3 } } } } dx$$ $$2\sin ^{ -1 }{ \left( \dfrac { { x }^{ \dfrac { 3 }{ 2 } } }{ 2 } \right) +c }$$

### Inverse Trigonometric Functions Questions and Answers

Inverse Trigonometric Functions Quiz Question Answer
$$if\quad x>0\quad then\quad { tanh }^{ -1 }\left( \frac { { x }^{ 2 }-1 }{ { x }^{ 2 }+1 } \right)$$ $${ log }_{ e }x$$
If $$\cos^{-1}x-\cos^{-1}(\dfrac {y}{2})=\alpha$$ $$ax^{2}-4xy\cos \alpha +y^{2}=$$ $$4\sin^{2}\alpha$$
$${\cot}^{-1}\left(\sqrt{\cos\alpha}\right) -{\tan}^{-1}\left(\sqrt{\cos\alpha}\right) =x$$, then $$\sin x$$ is equal to $$\displaystyle {\tan}^{2}\frac{\alpha}{2}$$
$${ cos }^{ -1 }(\frac { x }{ 3 } )+{ cos }^{ -1 }(\frac { y }{ 2 } )=(\frac { \theta }{ 2 } )$$ , then the value of $${ 4x }^{ 2 }$$-12xy cos$$(\frac { \theta }{ 2 } )$$+$${ 9y }^{ 2 }$$ is equal to  $$18(1-cos\theta )$$
$$\cos ^{ -1 }{ \left\{ \dfrac { 1 }{ 2 } { x }^{ 2 }+\sqrt { { 1-x }^{ 2 } } .\sqrt { 1\dfrac { { x }^{ 2 } }{ 4 } } \right\} } =\cos ^{ -1 }{ \dfrac { x }{ 2 } } -\cos ^{ -1 }{ x }$$ holds for $$0\le x\le 1$$
$$tan^{-1}y=tan^{-1}x+tan^{-1}(\frac{2x}{1-x^{2}})$$ where $$|x| < \frac{1}{\sqrt{3}}$$. Then a value of y is: $$\dfrac{3x-x^{3}}{1-3x^{2}}$$
$$4\tan ^{ -1 }{ \frac { 1 }{ 5 } } -\tan ^{ -1 }{ \frac { 1 }{ 70 } } +\tan ^{ -1 }{ \frac { 1 }{ 99 } } =$$ $$\pi$$
$$\cos ^{ -1 }{ \left( \cos { \dfrac { 7\pi }{ 6 } } \right) }$$ is equal to $$\dfrac {5\pi}{6}$$
The value of $$\sin ^{ -1 }{ (\cos { (\cos ^{ -1 }{ (\cos { x } ) } +\sin ^{ -1 }{ (\sin { x } ) } ) } ) } ,\quad where\quad x\in (\frac { \pi }{ 2 } ,\pi )$$, is equal to  $$-\frac { \pi }{ 2 }$$
The value of $$\sin^{-1}(\sin 3)+\cos^{-1}(\cos 7)-\tan^{-1}(\tan 5)$$ is $$\pi-1$$

#### Linear Programming Class 12 Engineering Maths MCQ Quiz   ### Linear Programming Questions and Answers

Solution of LPP to minimize z = 2x + 3y, such that $$x \geq 0, y \geq 0, 1 \leq x + 2y \leq 10$$ is $$x = 0, y = \dfrac{1}{2}$$
The point which provides the solution to the linear programming problem : Max P= 2x+3y subject to constraints :$$x\geq 0, y\geq 0,2x+2y\leq 9,2x+y\leq 7,x+2y\leq 8,$$ is (1,3.5)
Feasible region is the set of points which satisfy all the given constraints
If the corner points of the feasible solution are (0, 10), (2, 2) and (4, 0), then the point of minimum z = 3x + 2y is  (2, 2)
Minimise $$Z=\sum _{ j=1 }^{ n }{ \sum _{ i=1 }^{ m }{ { c }_{ ij }.{ x }_{ ij } } }$$
Subject to $$\sum _{ i=1 }^{ m }{ { x }_{ ij } } ={ b }_{ j },j=1,2,......n$$
$$\sum _{ j=1 }^{ n }{ { x }_{ ij } } ={ b }_{ j },j=1,2,......,m$$ is a LPP with number of constraints
$$m+n$$
The solution of the set of constraints of a linear programming problem is a convex (open or closed) is called ______ region. feasible
Solving an integer programming problem by rounding off answers obtained by solving it as a linear programming problem (using simplex), we find that The value of the objective function for a maximization problem will likely be less than that for the simplex solution.
If a = b then ax = ........... bx
The bar graph shows the grades obtained by a group of pupils in a test.
If grade C is the passing mark, how many pupils passed the test? 30
An iso-profit line represents An infinite number of solutions all of which yield the same profit

#### Matrices Class 12 Engineering Maths MCQ Quiz  If $$\displaystyle A=\left[ \begin{matrix} 3 & 1 \\ -1 & 2 \end{matrix} \right]$$ and $$\displaystyle I=\left[ \begin{matrix} 1 & 0 \\ 0 & 1 \end{matrix} \right]$$, then the correct statement is: $$\displaystyle { A }^{ 2 }-5A+7I=O$$
If AB = AC then  B need not be equal to C
If $$\mathrm{A}^{2}=\mathrm{A},\ \mathrm{B}^{2}=\mathrm{B},\ \mathrm{A}\mathrm{B}=\mathrm{B}\mathrm{A}=O$$ (Null Matrix), then $$(\mathrm{A}+\mathrm{B})^{2}=$$
$$\mathrm{A}+\mathrm{B}$$
$$I$$ $$A=\left[\begin{array}{ll} 0 & 1\\ 1 & 0 \end{array}\right]$$,  $$A^{4}=$$
($$I$$ is an identity matrix.)
$$I$$
lf $$\mathrm{A}= \left[\begin{array}{lll} o & c & -b\\ -c & o & a\\ b & -a & o \end{array}\right]\mathrm{a}\mathrm{n}\mathrm{d}$$ $$\mathrm{B}=\left[\begin{array}{lll} a^{2} & ab & ac\\ ab & b^{2} & bc\\ ac & bc & c^{2} \end{array}\right],$$ then $$\mathrm{A}\mathrm{B}=$$
$$\mathrm{O}$$
lIf $$\mathrm{A} =\left[\begin{array}{ll} a & 0\\ a & 0 \end{array}\right],\ \mathrm{B}=\left[\begin{array}{ll} 0 & 0\\ b & b \end{array}\right],$$ then $$\mathrm{A}\mathrm{B}=$$
$$O$$
If $$A=\left[\begin{array}{lll} 1 & -2 & 3\\ -4 & 2 & 5 \end{array}\right]$$ and $$B=\left[\begin{array}{ll} 2 & 3\\ 4 & 5\\ 2 & 1 \end{array}\right],$$ then
$$\mathrm{A}\mathrm{B},\ \mathrm{B}\mathrm{A}$$ exist and are not equal
$$A=\left[\begin{array}{lll} 0 & 1 & -2\\1 & 0 & 3\\2 &-3 & 0 \end{array}\right]$$ then $$\mathrm{A}+\mathrm{A}^{\mathrm{T}}=$$
$$\left[\begin{array}{lll} 0 & 2 & 0\\ 2 & 0 & 0\\ 0 & 0 & 0 \end{array}\right]$$
$$\left[\begin{array}{ll} x & 0\\ 0 & y \end{array}\right]\left[\begin{array}{ll} a & b\\ c & d \end{array}\right]=$$
$$\left[\begin{array}{ll} ax & b_{X}\\ yc & dy \end{array}\right]$$
If $$\mathrm{A}=\left[\begin{array}{lll} 1 & -3 & -4\\ -1 & 3 & 4\\ 1 & -3 & -4 \end{array}\right]$$, then $$\mathrm{A}^{2}=$$
Null matrix

#### Probability Class 12 Engineering Maths MCQ Quiz  Three number are chosen at random without replacement from {1,2,3,...8}. The probability that their minimum is 3, given that their maximum is 6 is  $$\frac{3}{28}$$
Difference between sample space and subset of sample space is considered as  complementary events.
If A and B are two events in a sample space S such that $$P\left ( A \right )\neq 0$$,  then  $$P\left ( \frac{B}{A} \right )=$$ $$\frac{P\left ( A\cap B \right )}{P\left ( A \right )}$$
Let A and E be any two events with positive probabilities :
Statement - 1 : $$P \left (\displaystyle \frac{E}{A} \right) \geq P \left (\displaystyle \frac{A}{E} \right ) P(E)$$
Statement - 2 : $$P \left (\displaystyle \frac{A}{E}\right ) \geq P(A\cap E)$$
Both the statement are true
If $$\mathrm{C}$$ and $$\mathrm{D}$$ are two events such that $$\mathrm{C}\subset \mathrm{D}$$ and $$\mathrm{P}(\mathrm{D})\neq 0$$, then the correct statement among the following is
$$P\left(\dfrac{C}{D}\right) \geq \mathrm{P}(\mathrm{C})$$
If $$A$$ and $$B$$ are any two events such that $$P(A) = \dfrac {2}{5}$$ and $$P(A\cap B) = \dfrac {3}{20}$$, then the conditional probability, $$P(A|(A'\cup B'))$$, where A' denotes the complement of $$A$$, is equal to: $$\dfrac {5}{17}$$
It is given that the events A and $$B$$ are such that $$P(A)=\displaystyle \frac{1}{4},\ P(A|B)=\displaystyle \frac{1}{2}$$ and $$P(B|A)=\displaystyle \frac{2}{3}$$. Then $$P(B)$$ is

$$\displaystyle \frac{1}{3}$$
Assertion is False, Reason is True
One of the two boxes, box $$I$$ and box $$II$$, was selected at random and balls are drawn randomly out of this box. The ball was found to be red.If the probability that this red ball was drawn from box $$II$$ is $$\dfrac{1}{3}$$, then the correct option options with the possible values of $$n_1,n_2,n_3$$ and $$n_4$$ is (are)
$$n_1 = 3, n_2=6,n_3=10,n_4=50$$
A fair die is rolled repeatedly until a six is obtained. Let X denote the number of rolls required.
The conditional probability that $$X \geq 6$$ given $$X > 3$$ equals
$$\displaystyle \frac{25}{36}$$

#### Relations And Functions Class 12 Engineering Maths MCQ Quiz  ### Relations And Functions Questions and Answers

Relations And Functions Quiz Question Answer
If $$f:N\rightarrow N,f(x)=x+3$$, then $$\quad { f }^{ -1 }(x)=.....$$ does not exist
If $$f(x)=8x^3$$ and $$g(x)=x^{1/3}$$ then $$(g o f)(x)=?$$ $$2x$$
Which of the following functions are one-one?
$$h:R\rightarrow R$$ given by $$h(x)={ x }^{ 3 }+4$$ for all $$\quad x\in R$$
A mapping function $$f:X\rightarrow Y$$ is one-one, if
$$f({ x }_{ 1 })=f({ x }_{ 2 })\Rightarrow { x }_{ 1 }={ x }_{ 2 }$$ for all $${ x }_{ 1 },{ x }_{ 2 }\in X$$
Let $$R$$ be a relation from a set $$A$$ to a set $$B$$,then
$$\displaystyle R\subseteq A\times B$$
Number of one-one functions from A to B where $$n(A)=4, n(B)=5$$. $$120$$
Find the value of $$\displaystyle \left( g\circ f \right) \left( 6 \right)$$ if $$\displaystyle g\left( x \right) ={ x }^{ 2 }+\frac { 5 }{ 2 }$$ and $$\displaystyle f\left( x \right) =\frac { x }{ 4 } -1$$.
2.75
The first component of all ordered pairs is called Domain
Find the correct expression for $$\displaystyle f\left( g\left( x \right) \right)$$ given that $$\displaystyle f\left( x \right) =4x+1$$ and $$\displaystyle g\left( x \right) ={ x }^{ 2 }-2$$ $$\displaystyle 4{ x }^{ 2 }-7$$
The second component of all ordered pairs of a relation is Range

#### Three Dimensional Geometry Class 12 Engineering Maths MCQ Quiz ### Three Dimensional Geometry Questions and Answers

Three Dimensional Geometry Quiz Question Answer
The equation of a plane passing through the points $$A(a, 0, 0), B(0, b, 0)$$ and $$C(0, 0, c)$$ is given by? $$\dfrac{x}{a}+\dfrac{y}{b}+\dfrac{z}{c}=1$$
The direction consines of the line drawn from $$P\left ( -5,3,1 \right )\,to\,Q\left ( 1,5,-2 \right )$$ is $$\left ( \dfrac {6}{7},\dfrac {2}{7},-\dfrac {3}{7} \right )$$
If a straight line makes an angle of $$60^\circ$$ with each of the X and Y axes, the angle which it makes with the Z axis is $$\dfrac {3\pi}{4}$$
The points $$(p+1, 1), (2p+1, 3)$$ and $$(2p+2,2p)$$ are collinear if  $$p=-\dfrac{1}{2}$$
In a plane there are 10 points, no three are in same straight line except 4 points which are collinear, then the number of straight lines are 45
The st lines whose direction cosines satisfy:
$$al+bm+cn=0$$ and $$fmn+gnl+hlm=0$$ are perpendicular if:
$$\dfrac {f}{a}+\dfrac {g}{b}+\dfrac {h}{c}=0$$
The equation of the plane which passes through the x-axis and perpendicular to the line $$\dfrac {(x - 1)}{cos\theta} = \dfrac {(y + 2)}{sin\theta} = \dfrac {(z - 3)}{0}$$ is $$x\, cos\theta + y\,sin\theta = 0$$
If $$l_1$$, $$m_1$$, $$n_1$$ and $$l_2$$, $$m_2$$, $$n_2$$ are the direction cosines of two perpendicular lines, then the direction cosine of the line which is perpendicular to both the lines , will be ($$m_1$$$$n_2$$ - $$m_2$$$$n_1$$), ($$n_1$$$$l_2$$ - $$n_2$$$$l_1$$), ($$l_1$$$$m_2$$ - $$l_2$$$$m_1$$)
The point collinder with (1,-2,-3) and (2,0,0) amoung the following is  (0, -4, -6)
A line with direction ratio 2,7,-5 is drawn to intersect the lines $$\frac { x-y }{ 3 } =\frac { y-7 }{ -1 } =\frac { z+2 }{ 1 }$$ and $$\frac { x+3 }{ -3 } =\frac { y-3 }{ 2 } =\frac { z-6 }{ 4 }$$ at P and Q respectively, then length of PQ is- $$\sqrt { 78 }$$

#### Vector Algebra Class 12 Engineering Maths MCQ Quiz  ### Vector Algebra Questions and Answers

The position vector of A is $$2\vec { i } +3\vec { j } +4\vec { k }$$$$\vec { AB } =5\vec { i } +7\vec { j } +6\vec { k }$$, then the position vector of B is $$-7\vec { i } -10\vec { j } -10\vec { k }$$
Line passing through $$(3,4,5)$$ and $$(4,5,6)$$ has direction ratios $$\ldots$$ $$1,1,1$$
In a parallelogram ABCD, $$|\overrightarrow{AB}| = a, |\overrightarrow{AD}| = b$$ and $$|\overrightarrow{AC}| = c$$, then $$\overrightarrow{DB}.\overrightarrow{AB}$$ has the value $$\displaystyle \frac{1}{2} (a^2 + b^2 - c^2)$$
If $$|\overrightarrow{C}|^2=60$$ and $$\overrightarrow{C} \times (\widehat{i}+2\widehat{j}+5\widehat{k})=\overrightarrow{0}$$, then a value of $$\overrightarrow{C}\cdot (-7 \widehat{i}+2\widehat{j}+3\widehat{k})$$ is :
$$12\sqrt{2}$$
If $$\vec{a} \times \vec{b} = \vec{b} \times \vec{a}$$, then $$\mathrm{\vec{a}}=k\mathrm{\vec{b}}$$
Let $$P,\ Q,\ R$$ and $$S$$ be the points on the plane with position vectors $$-2\hat{i}-\hat{j},\ 4\hat{i},\ 3\hat{i}+3\hat{j}$$ and $$-3\hat{i}+2\hat{j}$$ respectively. The quadrilateral $$PQRS$$ must be a
parallelogram, which is neither a rhombus nor a rectangle
Statement -$$1$$ is True, Statement -$$2$$ is False
$$ABCD$$ is a parallelogram and $$AC, BD$$ be its diagonals Then $$\vec{AC} +\vec{BD}$$ is
$$2\vec{BC}$$
The triangle $$ABC$$ is defined by the vertices $$A= (0,7,10)$$ , $$B=(-1,6,6)$$ and $$C=(-4,9,6)$$. Let $$D$$ be the foot of the attitude from $$B$$ to the side $$AC$$ then $$BD$$ is
$$-\overline{i}+2\overline{j}+2\overline{k}$$
The point $$C=(\dfrac{12}{5}, \dfrac{-1}{5},\dfrac{4}{5})$$ divides the line segment $$AB$$ in the ratio $$3:2$$. If $$B=(2,-1,2)$$ then $$A$$ is
$$(3, 1,-1)$$

### Maths MCQ Questions for Class 12 - Practice Test with Solutions

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