Staff Selection Commission Combined Higher Secondary Level Exam
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.) (29, 31, 37) (11, 13, 17)
Option 1: (17, 19, 29)
Option 2: (37, 41, 47)
Option 3: (19, 21, 23)
Option 4: (19, 23, 29)
Correct Answer: (19, 23, 29)
Solution : Given: (29, 31, 37); (11, 13, 17)
Here, the given set of numbers are consecutive prime numbers. Let's check the options – First option: (17, 19, 29)→After 19, the next prime number is 23. Therefore, this set does not consist of consecutive prime
Question : Absence of fish along a river indicates:
Option 1: Zone of degradation
Option 2: Zone of active decomposition
Option 3: all of zones of pollution
Option 4: Zone of recovery
Correct Answer: Zone of degradation
Solution : The correct option is zone of degradation.
The lack of fish in a river might be an indication of zone of degradation within that ecosystem. Because fish are sensitive to changes in water quality and habitat conditions, their absence frequently indicates issues such
Question : Rohan and Mohit, together, can build a wall in 8 days. Mohit and Vikas can build the same wall in 10 days and Vikas and Rohan can Build the same wall in 12 days. In how many days can all three complete the same wall while working together?
Option 1: $\frac{240}{37}$
Option 2: $\frac{120}{37}$
Option 3: $\frac{150}{37}$
Option 4: $\frac{180}{37}$
Correct Answer: $\frac{240}{37}$
Solution : Word done by Rohan and Mohit in one day = $\frac{1}{8}$ ---------------------(1) Work done by Mohit and Vikas in one day = $\frac{1}{10}$ ----------------------(2) Work done by Vikas and Rohan in one day = $\frac{1}{12}$ ---------------------(3) Adding (1), (2), and (3), we get 2(Work done
Question : Find the value of $\sin 47^{\circ} \cos 33^{\circ} -\cos 43^{\circ} \sin 57^{\circ}$.
Option 1: –1
Option 2: 1
Option 3: 0
Option 4: $\frac{1}{2}$
Correct Answer: 0
Solution : $\sin 47^{\circ} \cos 33^{\circ} -\cos 43^{\circ} \sin 57^{\circ}$ = $\sin 47^{\circ} \cos 33^{\circ}-\cos (90^\circ-47^{\circ} )\sin (90^\circ-33^{\circ})$ = $\sin 47^{\circ} \cos 33^{\circ}-\sin 47^{\circ} \cos 33^{\circ}$ = $0$ Hence, the correct answer is 0.
Question : Direction: If MIGHT is written as KGEFR, how can DIARY be written in that code?
Option 1: AGZPV
Option 2: BGYPW
Option 3: BGWOV
Option 4: AGYNW
Correct Answer: BGYPW
Solution : Given:
MIGHT is written as KGEFR
Here, M – 2 = K ; I – 2 = G ; G – 2 = E ; H – 2 = F ; T – 2 = R
Similarly, DIARY will be coded as:
D – 2
Question : If $\cos\theta=\frac{p}{\sqrt{p^{2}+q^{2}}}$, then the value of $\tan\theta$ is:
Option 1: $\frac{q}{\sqrt{p^{2}-q^{2}}}$
Option 2: $\frac{q}{p}$
Option 3: $\frac{p}{p^{2}+q^{2}}$
Option 4: $\frac{q}{\sqrt{p^{2}+q^{2}}}$
Correct Answer: $\frac{q}{p}$
Solution : Given that $\cos\theta=\frac{p}{\sqrt{p^{2}+q^{2}}}$. ⇒ $\cos^2\theta =\frac{p^2}{p^2+q^2} $ Using, $\sin^2\theta + \cos^2\theta = 1$ ⇒ $\sin^2\theta = 1-\cos^2\theta$ ⇒ $\sin^2\theta = 1-\frac{p^2}{p^2+q^2}$ ⇒ $\sin^2\theta = \frac{q^2}{p^2+q^2}$ ⇒ $\sin\theta=\frac{q}{\sqrt{p^{2}+q^{2}}}$ ⇒ $\tan\theta=\frac{\sin\theta}{\cos\theta}=\frac{\frac{q}{\sqrt{p^{2}+q^{2}}}}{\frac{p}{\sqrt{p^{2}+q^{2}}}}=\frac{q}{p}$ Hence, the correct answer is $\frac{q}{p}$.
Question : Where does the Alaknanda River join the Bhagirathi River in India?
Option 1: Devprayag
Option 2: Prayagraj
Option 3: Champawat
Option 4: Dehradun
Correct Answer: Devprayag
Solution : The correct option is Devprayag.
The Alaknanda River joins the Bhagirathi River at Devprayag in the Indian state of Uttarakhand. This confluence is a significant geographical and religious site. The Alaknanda originates from the Satopanth glacier in Uttarakhand in the Himalayas. The Bhagirathi originates
Question : In $\Delta ABC$, two points $D$ and $E$ are taken on the lines $AB$ and $BC,$ respectively in such a way that $AC$ is parallel to $DE$. Then $\Delta ABC$ and $\Delta DBE$ are:
Option 1: Similar only if $D$ lies outside the line segment $AB$.
Option 2: Congruent only if $D$ lies outside the line segment $AB$.
Option 3: Always similar.
Option 4: Always congruent.
Correct Answer: Always similar.
Solution : We have, $D$ and $E$ are the points on $AB$ and $BC$. Such that $AC$ is parallel to $DE$. In $\Delta ABC$ and $\Delta DBE$, $\angle A=\angle D$ (Corresponding angle) $\angle C=\angle E$ (Corresponding angle) $\therefore \Delta ABC\sim\Delta DBE$ (by AA similarity) Hence, the
Question : Select the most appropriate synonym of the underlined word in the given sentence.
His conceit prevented him from accepting any criticism, even if it was meant to be constructive.
Option 1: prejudice
Option 2: modesty
Option 3: cowardice
Option 4: egotism
Correct Answer: egotism
Solution : The correct choice is the fourth option.
The sentence describes someone who is unable to accept criticism due to his excessive pride or self-importance, which aligns with the meaning of conceit. Egotism refers to an exaggerated sense of self-importance or self-centeredness, leading to an
Question : Among the following districts of Tamil Nadu, which district is unfit for cultivation due to increased salinity:
Option 1: Coimbatore
Option 2: Tiruchirappalli
Option 3: Nagapattinam
Option 4: Ramanathapuram
Correct Answer: Coimbatore
Solution : The correct answer is Coimbatore.
Coimbatore faces agricultural challenges as increased salinity renders its soil unfit for cultivation. Elevated salt levels hamper plant growth by hindering water and nutrient absorption, ultimately lowering crop yield, and risking crop failure. Maintaining a balanced salt content in
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