SSC CHSL 2021-05.08.2021-1 SSC Question Paper

SSC CHSL 2021 Question Papers

SSC CHSL 2021-05.08.2021-1 SSC Questions

61.
The speed of a train is 78 km/h. It crosses a tunnel in 45 s and overtakes a person walking at a speed of 6 km/h in the same direction, in 15 s. The length (in m) of the tunnel is:
A.
675
B.
650
C.
975
D.
780
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ANSWER :
A. 675
62.
A bag contains coins of denomination ₹1, ₹2 and ₹5 in the ratio of 4 : 5 : 8. If the total value of these coins is ₹432, then what is the number of ₹2 coins?
A.
40
B.
30
C.
50
D.
60
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ANSWER :
A. 40
63.

A chord PQ of a circle C1 of radius 9.25 cm touches another circle C2 that is concentric to C1, and the radius of the smaller circle C2 is 3 cm. What is the length (in cm) of PQ?

A.

12

B.

19.5

C.

17.5

D.

15

😑 View Answer Rough Work
ANSWER :

C. 17.5

64.
In an isosceles triangle ABC, AB = AC and AD is perpendicular to BC. If AD = 12 cm and the perimeter of â–³ABC is 36 cm, then the length of BC (in cm) is:
A.
5
B.
12
C.
10
D.
13
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ANSWER :
C. 10
65.
The price of a commodity increases by 28%. However, the expenditure on it increases by 12%. What is the percentage increase or decrease in its consumption?
A.
16% Increase
B.
12.5% Decrease
C.
12.5% Increase
D.
16% Decrease
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ANSWER :
B. 12.5% Decrease
66.

The coefficient of x3y in (x - 2y) x (5x + y)3 is:

A.

75

B.

-150

C.

250

D.

-175

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ANSWER :

D. -175

67.
A can complete a work in 20 days, while B can complete the same work in 25 days. Both worked together for 10 days and then C alone completed the remaining work in 10 days. In how many days will A, B and C together complete the same work?
A.
10 days
B.
5 days
C.
8 days
D.
12 days
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ANSWER :
A. 10 days
68.
The average height of a certain number of students in a group is 155.6 cm. If 12 students having an average height of 150.5 cm join the group and students having an average height of 159 cm leave the group, the average height of the students in the group will decrease by 34 mm. What is the number of students, initially, in the group?
A.
30
B.
25
C.
40
D.
20
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ANSWER :
D. 20
69.

If cosθ =\(\frac{\sqrt{3}}{2}\) , then the value of \(\frac{2 - \sin^{2}\theta}{1 - \cot^{2}\theta}\) + (sec²θ + cosecθ) is

A.

\(\frac{25}{12}\)

B.

\(\frac{59}{24}\)

C.

\(-\frac{25}{12}\)

D.

\(-\frac{59}{24}\)

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ANSWER :

B. \(\frac{59}{24}\)

70.

Study the given graph which shows the number of workers with their daily wages and answer the question that follows.
 
What is the ratio of the total number of workers whose daily wages are ₹450 or above but less than ₹500 to the total number of workers whose daily wages are ₹650 or above?

A.

9:7

B.

5:2

C.

2:5

D.

7:9

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ANSWER :

A. 9:7