Staff Selection Commission Combined Higher Secondary Level Exam
Question : If 50 boys can finish a work in 30 days by working 6 hours per day, then how many hours per day should 25 boys work to finish that work within 24 days?
Option 1: 18 hours
Option 2: 10 hours
Option 3: 12 hours
Option 4: 15 hours
Correct Answer: 15 hours
Solution : M$_{1}$ = 50 boys H$_{1}$ = 6 hours D$_{1}$ = 30 days M$_{2}$ = 25 boys D$_{2}$ = 24 days M$_{1}$ D$_{1}$ H$_{1}$ = M$_{2}$ D$_{2}$ H$_{2}$ Where, M$_{1}$ and M$_{2}$ = Number of persons D$_{1}$ and D$_{2}$ = Number of days H$_{1}$ and
Question : Who among the following was given the charge of looking after the imperial household during the Mughal administration?
Option 1: Mir Saman
Option 2: Mir Bahri
Option 3: Mir Bakshi
Option 4: Mir-e-Aatish
Correct Answer: Mir Saman
Solution : The correct answer is Mir Saman.
In the Mughal administration, the responsibility for overseeing the imperial household's Karkhanas (workshops or factories) was assigned to an official known as Mir Saman. His duties included managing records, overseeing the state workshops, handling stores, maintaining order,
Question : A person scores 45% of the total marks in the exam and still fails by 40 marks. The passing percentage of the exam is 55%. What is the maximum mark for the exam?
Option 1: 300
Option 2: 350
Option 3: 400
Option 4: 500
Correct Answer: 400
Solution : Given: The passing percentage of the exam is 55%. Let maximum marks be $x$. According to the question, 45% of $x$ + 40 = 55% of $x$ ⇒ 10% of $x$ = 40 ⇒ $\frac{10×x}{100}$ = 40 ⇒ $x$ = 400 So, the maximum mark
Question : Directions: Which term from among the given options can replace the question mark (?) in the following series to make it logically complete? AN 37, (?), EH 50, GE 58, IB 67
Option 1: DL 42
Option 2: DI 45
Option 3: CK 43
Option 4: CL 44
Correct Answer: CK 43
Solution : Given: AN 37, (?), EH 50, GE 58, IB 67
For letter-based series – Add 2 in the first letter and subtract 3 from the second letter of the previous term of the given series. AN→A + 2 = C; N – 3 =
Question : The following sentence has been split into four segments. Identify the segment that contains a grammatical error. Can you please / open a door? / I can hear / somebody knocking.
Option 1: Can you please
Option 2: somebody knocking
Option 3: I can hear
Option 4: Open a door?
Correct Answer: Open a door?
Solution : The correct choice is the fourth option.
Explanation: In English, when making a specific request like opening a door, it is more natural to use the definite article "the" before the noun "door".
So, the correct sentence would be: "Can you please open
Question : If $\cos A+\sin A=\sqrt{2}\cos A$, then $\cos A-\sin A$ is equal to: (where $0^{\circ}< A< 90^{\circ}$)
Option 1: $\sqrt{2}\sin A$
Option 2: $2\sin A$
Option 3: $2\sqrt{\sin A}$
Option 4: $\sqrt{2\sin A}$
Correct Answer: $\sqrt{2}\sin A$
Solution : $\cos A+\sin A = \sqrt{2}\cos A$ $⇒\sin A = (\sqrt{2}-1)\cos A$ $⇒\frac {\sin A}{\cos A}=\sqrt{2}-1$ $⇒\frac {\sin A}{\cos A}=(\sqrt{2}-1)×\frac{(\sqrt{2}+1)}{(\sqrt{2}+1)}$ $⇒\frac {\sin A}{\cos A}=\frac{1}{\sqrt{2}+1}$ $⇒\cos A=(\sqrt{2}+1)\sin A$ $⇒\cos A=\sqrt{2}\sin A+\sin A$ $⇒\cos A - \sin A = \sqrt{2}\sin A$ Hence, the correct answer is $\sqrt{2}\sin
Question : If a + b = 6 and ab = 4, then what is the value of a3 + b3?
Option 1: 125
Option 2: 120
Option 3: 144
Option 4: 81
Correct Answer: 144
Solution : a + b = 6 ab = 4 We know that, a³ + b³ = (a + b)³ - 3ab(a + b) ⇒ a³ + b³ = (6)³ - 3 × 4 × 6 ⇒ a³ + b³ = 216 - 72 = 144 Therefore,
Question : Directions: In this question, a sentence is given with a blank to be filled in with an appropriate word. Four alternatives are suggested for each question. Choose the correct alternative out of the four alternatives.
If strict security measures were taken, the tragedy might have been ____.
Option 1: averted
Option 2: removed
Option 3: controlled
Option 4: restrained
Correct Answer: averted
Solution : The correct choice to fill in the blanks is the first option.
Averted means to prevent something from happening, which correctly goes in the sentence as the sentence states that if security measures were taken, the tragedy could have been prevented, which is the intended
Question : Who among the following personalities is known as the 'Queen of Carnatic Music'?
Option 1: M. S. Subbulakshmi
Option 2: Vijaya Rajendran
Option 3: Kavita Krishnamurthy
Option 4: Lata Mangeshkar
Correct Answer: M. S. Subbulakshmi
Solution : The correct answer is M. S. Subbulakshmi.
M. S. Subbulakshmi, also known as the 'Queen of Carnatic Music', was a legendary and iconic Indian classical vocalist renowned for her mastery of Carnatic music. Her contributions to music, her divine voice, and her dedication
Question : Name the scientist who proved that plants have life.
Option 1: Gregor Johann Mendel
Option 2: Hugo De Vries
Option 3: Jagadish Chandra Bose
Option 4: Robert Brown
Correct Answer: Jagadish Chandra Bose
Solution : The correct option is Jagadish Chandra Bose.
Jagadish Chandra Bose demonstrated that plants are just like any other living thing. Bose demonstrated that plants have a set life cycle, a reproductive mechanism, and a sense of surroundings. Bose demonstrated the movement of
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