Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Rearrange the following sentences (A), (B), (C), (D), (E) and (F) to make a meaningful paragraph and answer the questions which follow: (A) However while reading they would not know when to pause and what to emphasize. (B) Since then their use has been regularized and the punctuation rule have been followed by all. (C) In earlier days, people learnt by reading out loud. (D) But not everybody used the same punctuations for the same thing (E) To address this problem, various signs depicting various punctuations were introduced. (F) Thus firmer guidelines regarding punctuations were framed so that everyone used them in similar way. Which of the following sentences should be the THIRD after rearrangement?

Answer»

Rearrange the following sentences (A), (B), (C), (D), (E) and (F) to make a meaningful paragraph and answer the questions which follow:

(A) However while reading they would not know when to pause and what to emphasize.
(B) Since then their use has been regularized and the punctuation rule have been followed by all.
(C) In earlier days, people learnt by reading out loud.
(D) But not everybody used the same punctuations for the same thing
(E) To address this problem, various signs depicting various punctuations were introduced.
(F) Thus firmer guidelines regarding punctuations were framed so that everyone used them in similar way.

Which of the following sentences should be the THIRD after rearrangement?
2.

Let A and B be two sets such that A∪B=A. Then A∩B is

Answer»

Let A and B be two sets such that AB=A. Then AB is

3.

Using differentials, find the approximate value of each of the following: (1781)14 (33)−15

Answer»

Using differentials, find the approximate value of each of the following:

(1781)14

(33)15

4.

Given statements in (a) and (b). Identify the statements given below as contrapositive or converse of each other. (a) If you live in Delhi, then you have winter clothes. (i) If you do not have winter clothes, then you do not live in Delhi. (ii) If you have winter clothes, then you live in Delhi. (b) If a quadrilateral is a parallelogram, then its diagonals bisect each other. (i) If the diagonals of a quadrilateral do not bisect each other, then the quadrilateral is not a parallelogram. (ii) If the diagonals of a quadrilateral bisect each other, then it is a parallelogram.

Answer» Given statements in (a) and (b). Identify the statements given below as contrapositive or converse of each other. (a) If you live in Delhi, then you have winter clothes. (i) If you do not have winter clothes, then you do not live in Delhi. (ii) If you have winter clothes, then you live in Delhi. (b) If a quadrilateral is a parallelogram, then its diagonals bisect each other. (i) If the diagonals of a quadrilateral do not bisect each other, then the quadrilateral is not a parallelogram. (ii) If the diagonals of a quadrilateral bisect each other, then it is a parallelogram.
5.

14,sin2 x + 2 sin 4x + sin 6r = 4 cos2 x sin 4x

Answer» 14,sin2 x + 2 sin 4x + sin 6r = 4 cos2 x sin 4x
6.

The unit vector perpendicular to the plane →r⋅(2^i+^j+2^k)=5 is

Answer»

The unit vector perpendicular to the plane r(2^i+^j+2^k)=5 is

7.

The sum of (1+x)+(1+x+x2)+(1+x+x2+x3)+… upto n terms is

Answer»

The sum of (1+x)+(1+x+x2)+(1+x+x2+x3)+ upto n terms is

8.

Match the given functions in the first column with their first derivatives.

Answer»

Match the given functions in the first column with their first derivatives.

9.

Prove that cos(π+x)cos(−x)sin(π−x)cos(π2+x)=cot2x

Answer» Prove that cos(π+x)cos(x)sin(πx)cos(π2+x)=cot2x
10.

The 4th term of a G.P. is square of its second term, and the first term is - 3. Find its 7th term.

Answer»

The 4th term of a G.P. is square of its second term, and the first term is - 3. Find its 7th term.

11.

If ax² + bx + c = 0 has equal roots, then b is equal toA. 2 sq root of (ac)B. - 2 sq root of (ac)C. +/- 2 sq root of (ac)D. 2ac

Answer» If ax² + bx + c = 0 has equal roots, then b is equal to
A. 2 sq root of (ac)
B. - 2 sq root of (ac)
C. +/- 2 sq root of (ac)
D. 2ac
12.

The image of the line x−13=y−31=z−4−5 in the plane 2x - y + z + 3 = 0 is the line

Answer»

The image of the line x13=y31=z45 in the plane 2x - y + z + 3 = 0 is the line


13.

If the equation ax+2x-2=0 has real and distinct roots then value of a is?

Answer» If the equation ax+2x-2=0 has real and distinct roots then value of a is?
14.

If a and b are the zeroes of the polynomial f(x)=x*2 - 5x+k such that a-b=1 then find the value of k

Answer» If a and b are the zeroes of the polynomial f(x)=x*2 - 5x+k such that a-b=1 then find the value of k
15.

The point where the origin has to be shifted so that the equation y2+4y+8x−2=0 will not contain y and the constant term is

Answer»

The point where the origin has to be shifted so that the equation y2+4y+8x2=0 will not contain y and the constant term is

16.

The slope of tangent of a curve, passing through (3,4) at any point is the reciprocal of twice the ordinate of the point. Then the curve also passes through:

Answer»

The slope of tangent of a curve, passing through (3,4) at any point is the reciprocal of twice the ordinate of the point. Then the curve also passes through:

17.

The diameters of a circle are along 2x+y−7=0 and x+3y−11=0 Then the equation of this circle, which also passes through (5,7) is

Answer»

The diameters of a circle are along 2x+y7=0 and x+3y11=0 Then the equation of this circle, which also passes through (5,7) is


18.

The eccentricity of the ellipse x216+y225=1 is

Answer»

The eccentricity of the ellipse x216+y225=1 is

19.

32. Let x1 and x2 be the roots of the equation x2 + px 3 = 0. If x12 + x22 = 10, then the value of p is equal to (A) -4 or 4 (B) -3 or 3 (C) -2 or 2 (D) -1 or 1 (E) 0

Answer» 32. Let x1 and x2 be the roots of the equation x2 + px 3 = 0. If x12 + x22 = 10, then the value of p is equal to (A) -4 or 4 (B) -3 or 3 (C) -2 or 2 (D) -1 or 1 (E) 0
20.

If the line y = 2 X under root 3 + k touches the circle x square + 5 square =16 then find the value of k

Answer» If the line y = 2 X under root 3 + k touches the circle x square + 5 square =16 then find the value of k

21.

If two fair coins are flipped and at least one of the outcomes is known to be a head. What is the probability that both outcomes are heads?

Answer»

If two fair coins are flipped and at least one of the outcomes is known to be a head. What is the probability that both outcomes are heads?

22.

The value of log7(log7 √7(√7√7)) is:

Answer»

The value of log7(log7 7(77)) is:

23.

The length of a rectangle is three times the breadth. If the minimum perimeter of the rectangle is 160 cm, then

Answer»

The length of a rectangle is three times the breadth. If the minimum perimeter of the rectangle is 160 cm, then

24.

The value of C12 + C34 + C56 + ...... is equal to

Answer»

The value of C12 + C34 + C56 + ...... is equal to




25.

How many 4-digit numbers are there with no digit repeated?

Answer» How many 4-digit numbers are there with no digit repeated?
26.

Two particles, 1 and 2, move with constant velocities v1 andv2. At the initial moment their radius vectors are equal to r1 and r2.How must these four vectors be interrelated for the particles to collide?1.6. A

Answer» Two particles, 1 and 2, move with constant velocities v1 and
v2. At the initial moment their radius vectors are equal to r1 and r2.
How must these four vectors be interrelated for the particles to collide?
1.6. A
27.

The diameters of circles (in mm) drawn in a design are givenbelow: Diameters No. of children 33-36 15 37-40 17 41-44 21 45-48 22 49-52 25

Answer»

The diameters of circles (in mm) drawn in a design are given
below:




























Diameters



No. of children



33-36



15



37-40



17



41-44



21



45-48



22



49-52



25



28.

If →a is a perpendicular to →b and →c,∣∣→a∣∣=2,∣∣∣→b∣∣∣=3,∣∣→c∣∣=4 and the angle between →b and →c is 2π3,then ∣∣∣[→a →b →c]∣∣∣ is equal to

Answer»

If a is a perpendicular to b and c,a=2,b=3,c=4 and the angle between b and c is 2π3,then [a b c] is equal to

29.

Among the given options, for what value of dx will the area under the curve be most precise to the true value

Answer»

Among the given options, for what value of dx will the area under the curve be most precise to the true value

30.

1+2i+3i21−2i+3i2 equals

Answer»

1+2i+3i212i+3i2 equals


31.

11.Find the mean deviation about median for the following data:MarksNumber ofGirls0-10 10-20 20-30 30-40 40-50 50-6014164

Answer» 11.Find the mean deviation about median for the following data:MarksNumber ofGirls0-10 10-20 20-30 30-40 40-50 50-6014164
32.

If 1∫0(cos([x]+[2x]+[3x])dx=a+bcos1+ccos2+dcos3, then which of the following statement(s) is/are true ?

Answer»

If 10(cos([x]+[2x]+[3x])dx=a+bcos1+ccos2+dcos3, then which of the following statement(s) is/are true ?



33.

If a tangent on ellipse at A(1,1) intersects its directrix at B(7,–7) and S be the corresponding focus of ellipse and C(α,β) is the circumcentre of △SAB, then

Answer»

If a tangent on ellipse at A(1,1) intersects its directrix at B(7,7) and S be the corresponding focus of ellipse and C(α,β) is the circumcentre of SAB, then

34.

If →a×→b=→a×→c,→a≠→0 and →b≠→c, then

Answer»

If a×b=a×c,a0 and bc, then

35.

What is lami's theorem explain its derivation along with application.

Answer» What is lami's theorem explain its derivation along with application.
36.

The latus rectum of parabola y2=5x+4y+1 is

Answer»

The latus rectum of parabola y2=5x+4y+1 is


37.

Let R be the equivalence relation on the set Z of the integers given by R = {(a, b) : 2 divides a - b}. Write the equivalence class [0]. [NCERT EXEMPLAR]

Answer» Let R be the equivalence relation on the set Z of the integers given by R = {(a, b) : 2 divides a - b}. Write the equivalence class [0].

[NCERT EXEMPLAR]
38.

If x+log10(1+2x)=xlog105+log106 then the value of x is

Answer»

If x+log10(1+2x)=xlog105+log106 then the value of x is

39.

The intercepts made on the axes by the plane which bisects the line joining the points (1, 2, 3) and (-3, 4, 5) at right angles are

Answer»

The intercepts made on the axes by the plane which bisects the line joining the points (1, 2, 3) and (-3, 4, 5) at right angles are

40.

55. The graph of the equation y=X,X=a and y=b intersect the each other at point p as shown in the figure.the measure of the angle SPO is equal to.

Answer» 55. The graph of the equation y=X,X=a and y=b intersect the each other at point p as shown in the figure.the measure of the angle SPO is equal to.
41.

The median of 11 observations is 10. The number of possible observations in the data which are less than 10 is(a) 5 (b) 6 (c) 3 (d) 10

Answer» The median of 11 observations is 10. The number of possible observations in the data which are less than 10 is



(a) 5 (b) 6 (c) 3 (d) 10
42.

Let f and g be differentiable function satisfying g′(a)=2,g(a)=b and g is the inverse of f. Then f′(b) is equal to

Answer»

Let f and g be differentiable function satisfying g(a)=2,g(a)=b and g is the inverse of f. Then f(b) is equal to

43.

Choose the odd one number.Options:a)283b)223c)227 d)203

Answer» Choose the odd one number.

Options:
a)283
b)223
c)227
d)203
44.

From a lot of 15 bulbs which include 5 defective, a sample of 4 bulbs is drawn one by one with replacement. Find the probability distribution of number of defective bulbs. Hence, find the mean of the distribution. [CBSE 2014]

Answer» From a lot of 15 bulbs which include 5 defective, a sample of 4 bulbs is drawn one by one with replacement. Find the probability distribution of number of defective bulbs. Hence, find the mean of the distribution. [CBSE 2014]
45.

If cos x=cos α+cos β1+cos α cos β, prove that tanx2=±tanα2tanβ2

Answer» If cos x=cos α+cos β1+cos α cos β, prove that tanx2=±tanα2tanβ2
46.

If cos−1x+cos−1y+cos−1z=π then prove that x2+y2+z2+2xy=1 .

Answer»

If cos1x+cos1y+cos1z=π then prove that x2+y2+z2+2xy=1 .

47.

If A>0,B>0 and A+B=π3, then the maximum value of 3tanAtanB is

Answer» If A>0,B>0 and A+B=π3, then the maximum value of 3tanAtanB is
48.

if |z1|=1, |z2|=1, |1/z1+1/z2|=3/2, then find 2|z1+z2|

Answer» if |z1|=1, |z2|=1, |1/z1+1/z2|=3/2, then find 2|z1+z2|
49.

How many different numbers can be formed with the digits 1,3,5,7,9 when taken all at a time and what is their sums.

Answer» How many different numbers can be formed with the digits 1,3,5,7,9 when taken all at a time and what is their sums.
50.

The value of tan−1(−√3) is

Answer»

The value of tan1(3) is