Where can I practice free MCQ tests online?

You can practice free MCQ tests with answers and explanations on MCQBits.

Are MCQBits mock tests free?

Yes, all MCQ practice tests and quizzes on MCQBits are completely free.

TS Polycet (Polytechnic) 2019 Previous Question Paper with Answers And Model Papers With Complete Analysis

21) Which term of the A.P.: 21,18, 15,……………is -30?

A) 16

B) 18

C) 17

D) 19

View Answer

B) 18
Explanation:a = 21, d =-3, a _n = a + (n – 1)d =-30
=> 21 + (n – 1)(-3)=-30
=> n-1 = $\frac{\cancel{-51}}{\cancel{-3}}$ = 17
∴ n = 18

22) In A.P., sum of n terms, S_n =

A) $\frac n2\left[2a+\left(n-1\right)d\right]$

B) $\frac n2\left[a+\left(n-1\right)d\right]$

C) $\frac{n2}2\left[2a+\left(n-1\right)d\right]$

D) None

View Answer

A) $\frac n2\left[2a+\left(n-1\right)d\right]$
Explanation:S_n = $\frac n2$ [2a + (n-1)d]

23) If a, b, c are in G.P., then a/b =

A) b/c

B) c/b

C) 1/ab

D) b/a

View Answer

A) b/c
Explanation:a, b, c are In GP.
b/a = c/b => a/b = b/c

24) Distance between the points (-2,3), (2, -3)

A) √52

B) 0

C) 52

D) 20

View Answer

A) √52
Explanation: $\sqrt{42+62} = \sqrt{16+36}$ = √52

25) If (P, 2), (-3, 4) and (7, -1) are collinear, then P =

A) -1

B) 0

C) -2

D) 1

View Answer

D) 1
Explanation:A (P, 2), B (-3, 4), C (7, -1)
Slope of AB = Slope of BC
$\frac{4-2}{-3-P} = \frac{-1-4}{7+3}$
= $\frac2{-3-P} = \frac{-5}{10}$
= $\frac2{-3-P} = \frac{-1}2$
4 = 3 + P => P = 1

26) Centroid of a triangle divides each median in the ratio:

A) 2 : 1

B) 1 : 2

C) 1 : 3

D) 3 : 1

View Answer

A) 2 : 1
Explanation:2:1

27) Slope of the line joining the points (4, -8), (5,-2)

A) 1/6

B) -6

C) 6

D) -1/6

View Answer

C) 6
Explanation: $\frac{Y2\;-Y1}{x2\;-x1}=\frac{-2\;+\;8}{5-4}\;=\frac61$ = 6

28) If two triangles are similar such that ratio of their areas is 25 : 361, then find the, ratio of their corresponding medians.

A) 10 : 20

B) 5 : 19

C) 20 : 19

D) 18 : 5

View Answer

B) 5 : 19
Explanation:√25 : 361 = 5 : 19

29) The angles of a triangle are in the ratio 1:2: 3, then the least angle is

A) 15°

B) 20°

C) 25°

D) 30°

View Answer

D) 30°
Explanation:Ratio = 1:2:3
A:B:C= 1 :2:3
A/1 = B/2 = C/3 = K
A = K, B = 2K, C = 3K
A+B+C= 180°
K + 2K + 3K = 180°
6K = 180° => K i 30°
Angles = 30°, 60°, 90°
∴Least angle = 30°

30) The angles of a triangle are 3x + 12°, 5x – 6° and x + 3°, then measure of largest angle is

A) 69°

B) 59°

C) 79°

D) 89°

View Answer

D) 89°
Explanation:A = 3x + 12°, B = 5x- 6°, C = x + 3°
A + B + C = 180°
3x + 12° + 5x-6° + x + 3° = 180°
9x + 9 = 180°
9x= 171 =>x= 19°
∴A = 3x + 12° = 3(19) + 12 = 69°
B = 5x-6 = 5 (19) – 6 = 89°
C = x + 3 = 19 + 3 = 22°
∴ Largest angle = 89°

Your Score: 0 / 0

Start Test

Spread the love

Pages: 1 2 3 4 5 6 7 8 9 10 11 12

Leave a Comment Cancel Reply