Staff Selection Commission Combined Higher Secondary Level Exam
Question : Directions: In a certain code language, A + B means A is the mother of B, A – B means A is the brother of B, A × B means A is the wife of B, A ÷ B means A is the father of B. Based on the above, how is M related to O if K ÷ L × M – N + O?
Option 1: Mother's husband
Option 2: Mother's brother
Option 3: Wife's father
Option 4: Daughter's husband
Correct Answer: Mother's brother
Solution : Given: A + B ⇒ A is the mother of B A – B ⇒ A is the brother of B A × B ⇒ A is the wife of B A ÷ B ⇒ A is the father of B
As per the
Question : Comprehension: In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Once King Krishnadeva Raya (1)________ a parrot of which he was excessively fond. He kept it in a silver cage and fed it fruits and nuts and anything else the bird asked for. The parrot longed for freedom and often asked for it, but the king would always reply, "Ask for anything else." One day, the parrot said to the king, "Give me freedom and I'll give you three (2)________ advice that could be of great benefit to you." The king loved the parrot, but he loved money (3)_______. The parrot said, "Never believe everything that is told to you. What you don't know is that I've two priceless gems in my stomach," said the bird. "Two priceless gems," echoed the king, "Oh, what a fool I was to set you free! I'll regret this for the rest of my life!" I (4)_________ you never to grieve over losses but here you are grieving over losing me," said the parrot, "I advised you never to believe everything you hear, but you immediately believed me when I told you I had two gems in my stomach. (5)_________ I have survived if I really had two gems in my stomach?" My third advice is, "Listen, learn to listen with your mind instead of just with your ears." Saying these words, the parrot flew away. Select the most appropriate option to fill in the blank number 4.
Option 1: have advised
Option 2: advised
Option 3: advise
Option 4: did advised
Correct Answer: advised
Solution : The correct choice is the second option.
Explanation: In this sentence, the parrot is referring to a piece of advice given earlier so the past tense of the verb "advise" i.e., advised should be used.
Question : If p : q = 3 : 5 and p : r = 2 : 3, then what is the value of 3p : 4q : 3r?
Option 1: 12 : 8 : 9
Option 2: 18 : 40 : 27
Option 3: 10 : 5 : 4
Option 4: 9 : 5 : 4
Correct Answer: 18 : 40 : 27
Solution : Given: p : q = 3 : 5 p : r = 2 : 3 Multiply the first ratio by 2 and the second ratio by 3. p : q = 6 : 10 p : r = 6 : 9
Question : "Residuary powers" under the Indian Constitution means:
Option 1: The powers relating to International affairs.
Option 2: The powers relating to internal emergency.
Option 3: The powers, which can be exercised both by the Union Government and the state.
Option 4: The powers, which have not been specifically enumerated in the Union List, State List and Concurrent List.
Correct Answer: The powers, which have not been specifically enumerated in the Union List, State List and Concurrent List.
Solution : The correct answer is The powers, which have not been specifically enumerated in the Union List, State List and Concurrent List.
In the Indian Constitution, "Residuary powers" relate to
Question : Directions: Select the option in which the numbers share the same relationship in the set as that shared by the numbers in the given set. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g.13 – operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (32, 64, 256) (18, 36, 144)
Option 1: (37, 74, 296)
Option 2: (26, 52, 313)
Option 3: (41, 82, 164)
Option 4: (24, 72, 287)
Correct Answer: (37, 74, 296)
Solution : Given: (32, 64, 256); (18, 36, 144)
Here, the pattern followed is as follows – Like, (32, 64, 256)→32 × 2 = 64; 64 × 4 = 256 And, (18, 36, 144)→18 × 2 = 36; 36 × 4 = 144
Let's check
Question : Soap helps in better cleaning of clothes because:
Option 1: Soap acts like a catalyst
Option 2: It reduces the surface tension of the solution
Option 3: It gives strength to the solution
Option 4: It absorbs the dirt
Correct Answer: It reduces the surface tension of the solution
Solution : The correct option is It reduce the surface tension of the solution.
Soaps can dissolve the grease and oil that hold dirt in place, and they are efficient cleaners. They allow the solution to moisten objects more
Question : Three numbers are such that their sum is 50, the product is 3750 and the sum of their reciprocals is $\frac{31}{150}$. Find the sum of the squares of the three numbers.
Option 1: $2500$
Option 2: $1250$
Option 3: $950$
Option 4: $122$
Correct Answer: $950$
Solution : Let the numbers be $a, b$ and $c$. Given: $(a + b + c) = 50$, $abc = 3750$ and $\frac{1}{a} + \frac{1}{b} + \frac{1}{c} = \frac{31}{150}$ Now, $\frac{1}{a} + \frac{1}{b} + \frac{1}{c} = \frac{(bc + ac + ab)}{abc}$ ⇒ $\text{(bc+ac +ab)} = \frac{31}{150}\times 3750
Question : Directions: In a certain code language, JAIL is coded as 304, and LAWN is coded as 232. What is the code for NAVY in that code language?
Option 1: 312
Option 2: 184
Option 3: 188
Option 4: 182
Correct Answer: 184
Solution : Given: JAIL is coded as 304, and LAWN is coded as 232.
Add the reverse position value of the letters of the word JAIL and multiply the resultant with the total number of letters, to obtain the required code – J→17; A→26; I→18; L→15 Now,
Question : $\triangle \mathrm {ABC}$ is similar to $\triangle \mathrm{PQR}$ and $\mathrm{PQ}=10 \mathrm{~cm}$. If the area of $\triangle \mathrm{ABC}$ is $32 \mathrm{~cm}^2$ and the area of $\triangle \mathrm{PQR}$ is $50 \mathrm{~cm}^2$, then the length of $A B$ (in $\mathrm{cm}$ ) is equal to:
Option 1: 10
Option 2: 4
Option 3: 6
Option 4: 8
Correct Answer: 8
Solution : If $\triangle \mathrm{A B C}$ is similar to $\triangle \mathrm{PQR}$ ⇒ $\frac{\text{Ares of triangle ABC}}{AB^2}=\frac{\text{Area of triangle PQR}}{PQ^2}$ ⇒ $\frac{32}{AB^2}=\frac{50}{10^2}$ ⇒ $AB^2=\frac{32}{50}\times 100$ ⇒ $AB^2=64$ cm ⇒ $AB=\sqrt{64}=8$ cm Hence, the correct answer is 8 cm.
Question : Dioptre is the unit of:
Option 1: power of a lens
Option 2: focal length of a lens
Option 3: light intensity
Option 4: sound intensity
Correct Answer: power of a lens
Solution : The correct answer is the power of a lens.
The focal length determines the lens's power. The power of a lens will decrease with increasing focal length and increase with decreasing focal length. Light has less power if there is less bending
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