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Staff Selection Commission Combined Higher Secondary Level Exam

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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

Team Careers360 11th Jan, 2024

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

19 Views

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: $\frac{180}{37}$

Team Careers360 24th Jan, 2024

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

19 Views

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: $\frac{1}{2}$

Team Careers360 15th Jan, 2024

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.

22 Views

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

Team Careers360 11th Jan, 2024

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

11 Views

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: $\frac{q}{\sqrt{p^{2}+q^{2}}}$

Team Careers360 16th Jan, 2024

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 $\frac{q}{p}$.

21 Views

Question : Where does the Alaknanda River join the Bhagirathi River in India?

Option 1: Devprayag

Option 2: Prayagraj

Option 3: Champawat

Option 4: Dehradun

Team Careers360 11th Jan, 2024

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

15 Views

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.

Team Careers360 19th Jan, 2024

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

30 Views

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

Team Careers360 10th Jan, 2024

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

23 Views

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

Team Careers360 25th Jan, 2024

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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