Staff Selection Commission Combined Higher Secondary Level Exam
Question : Directions: How many wrappers are not pens?
Option 1: 7
Option 2: 18
Option 3: 12
Option 4: 15
Correct Answer: 18
Solution : The shaded part of the figure represents the number that are wrappers but not the pens.
So, wrappers that are pens are 12 + 6 = 18. Hence, the second option is correct.
Question : Directions: Select the term from the given options that can replace the question mark (?) in the given series to make it logically complete. ZJ10, ?, XH40, WG80, VF160
Option 1: ZJ21
Option 2: YI20
Option 3: ZG22
Option 4: YH22
Correct Answer: YI20
Solution : Given: ZJ10, ?, XH40, WG80, VF160 Subtract 1 from the place value of each letter and multiply the number by 2 to get the next term of the series – ZJ10; Z – 1 = Y; J – 1 = I; 10 × 2 =
Question : Directions: In the following question, some parts of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select 'No Error'.
She picked (1) / on the (2) / trail soon after. (3) / No Error (4)
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 2
Solution : The error lies in the second part of the sentence because of the incorrect usage of the preposition 'on' which should be replaced with 'up'. The phrasal verb 'Picked up the trail' means to track or discover a physical path left by someone or
Question : Parts of the following sentence are given as options. Identify the part that contains a grammatical error. If there is no error, select 'No error'. They know they will face / either a swift backlash / or deafening silence.
Option 1: No error
Option 2: They know they will face
Option 3: or deafening silence.
Option 4: either a swift backlash
Correct Answer: No error
Solution : The correct answer is the first option.
The given sentence is contextually meaningful and grammatically correct.
Question : What is the pH of normal milk?
Option 1: 9.1-9.3
Option 2: 8.1-8.3
Option 3: 5.4-5.6
Option 4: 6.7-6.9
Correct Answer: 6.7-6.9
Solution : The correct option is 6.7-6.9.
The pH of milk is between 6.7-6.9. As a result, milk has a pH of 0 to 14, which is somewhat acidic but still very neutral. Milk has a slightly acidic pH primarily due to the presence of lactic
Question : Parts of a sentence are given below in jumbled order. Arrange the parts in the correct order to form a meaningful sentence.
P. the golden era when their language, culture and arts flourished Q. in the minds of the Tamils R. under the patronage of successive Pandian kings S. The name 'Madurai' evokes
Option 1: SPQR
Option 2: SQPR
Option 3: SRPQ
Option 4: SQRP
Correct Answer: SQPR
Solution : The correct choice will be the second option.
The complete sentence in the correct order is: The name 'Madurai' evokes in the minds of the Tamils the golden era when their language, culture, and arts flourished under the patronage of successive Pandian kings.
Question : What is the approximate present value (in INR lakh) of an income of INR 2.1 lakh to be received after 2 years if the rate of interest is 5% per annum compounded annually?
Option 1: 1.815
Option 2: 1.975
Option 3: 1.725
Option 4: 1.905
Correct Answer: 1.905
Solution : Given: Amount = INR 210000 Time = 2 years Rate = 5% $\text{Total Amount}=\text{Principal}×(1+\frac{\text{Rate}}{100})^{\text{Time}}$ ⇒ $210000=\text{Principal}×(1+\frac{5}{100})^2$ ⇒ $\text{Principal} = \frac{210000×20×20}{21×21}$ $\therefore \text{Principal}= INR 190476.2 \approx 1.905$ lakhs Hence, the correct answer is 1.905.
Question : If a right circular cone of height 24 cm has the circumference of its base 42$\pi$ cm, then the volume of the cone is: (Use $\pi=\frac{22}{7}$)
Option 1: 15211 cm3
Option 2: 11088 cm3
Option 3: 12034 cm3
Option 4: 21011 cm3
Correct Answer: 11088 cm3
Solution : Given, the height of the cone, $h$ = 24 cm Let the radius of the cone be $r$ cm. Circumference of the base of the cone = 42$\pi$ cm ⇒ $2\pi r = 42\pi$ ⇒ $r=21\ cm$ Volume of cone = $\frac{1}{3}\pi r^2h$
Question : Directions: 10 is related to 17 following a certain logic. Following the same logic, 50 is related to 65. To which of the following is 26 related following the same logic?
Option 1: 39
Option 2: 37
Option 3: 38
Option 4: 35
Correct Answer: 37
Solution : Given: 10 is related to 17 and 50 is related to 65.
Add 1 to the squares of consecutive natural numbers. Like, 10 is related to 17→(3)2 + 1 = 9 + 1 = 10; (4)2 + 1 = 16 + 1 =
Question : The sides of the three cubes of metal are $15 \text{ cm}, 18 \text{ cm}$ and $25 \text{ cm}$, respectively. Find the side (in $\text{cm}$) of the new cube formed by melting these cubes together.
Option 1: $9 \sqrt[3]{388}$
Option 2: $6 \sqrt[3]{388}$
Option 3: $7 \sqrt[3]{388}$
Option 4: $4 \sqrt[3]{388}$
Correct Answer: $4 \sqrt[3]{388}$
Solution : Let the side of the new cube be $a\text{ cm}$. Volume of 1st cube, $V{_1} = 15^3 = 3375\text{ cm}^3$ Volume of 2nd cube, $V{_2} = 18^3 =5832 \text{ cm}^3$ Volume of 3rd cube, $V{_3} = 25^3 = 15625\text{ cm}^3$ $\therefore$ Volume of new
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