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Staff Selection Commission Combined Graduate Level Exam

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Question : Comprehension:
Read the following passage and answer the questions given after it.
The severe cyclonic storm, Nisarga, which made landfall south of Alibag in Maharashtra’s Raigad district on Wednesday at 11.30 a.m. is an indication of an increasing frequency of severe cyclones developing in the Arabian Sea in the past decade, a trend that studies have linked to climate change. In the past two years, there have been seven cyclones in the Arabian Sea, though, according to the India Meteorological Department (IMD), the ratio of cyclones in the Arabian Sea and the Bay of Bengal — which just witnessed the destructive cyclone Amphan on May 21 — is 1:4. The Intergovernmental Panel on Climate Change (IPCC) last year came out with a special report, Ocean and Cryosphere in a Changing Climate, in which it said that extreme rainfall and extreme sea level events associated with some tropical cyclones are being seen to have a cascading impact on coastal areas.
“There is emerging evidence for an increase in the annual global proportion of Category 4 or 5 tropical cyclones in recent decades,” the IPCC report had said. A category 4 cyclone has a wind speed of 209-251 kmph, and is referred to as an extremely severe cyclonic storm, while a category 5 cyclone has a wind speed of more than 252 kmph, and is referred to as a super cyclone. The IPCC report refers to a 2017 study led by the Atmospheric and Oceanic Sciences Program, Princeton University, USA, which found that in 2014 and 2015, post-monsoon extremely severe cyclonic storms (ESCS) were first observed over the Arabian Sea causing widespread damage.
The study had concluded that climate change had led to an increase in the occurrence of ESCSs in the Arabian Sea.“Our research suggests that cyclones would be more frequent during the post-monsoon season (October-December) by a series of climate model simulations. However, we didn’t find any significant changes in cyclone activity during the pre-monsoon (April-June) season through the climate simulations. It is very difficult to identify if a cyclone (like Nisarga) is generated in line with climate change,” said Hiroyuki Murakami, the lead author of the study. “Coastal hazards will be exacerbated by an increase in the average intensity, magnitude of storm surge, rising mean sea levels and precipitation rates of tropical cyclones,” the IPCC report further stated.
Question:
The hazards in coastal areas worsen due to the increase in which of the following?
a. Precipitation rate of the cyclone
b. Magnitude of storm
c. The rise of sea level

Option 1: Only a and c are true

Option 2: Only b and c are true

Option 3: Only a and b are true

Option 4: a, b and c all are true

Team Careers360 27th Jan, 2024

Correct Answer: a, b and c all are true


Solution : The right choice is the fourth option.

The passage mentions that coastal hazards will be exacerbated by an increase in average intensity, storm surge magnitude, rising sea levels, and precipitation rates of tropical cyclones. The appropriate causes were:

  • Precipitation rate of the cyclone: More rainfall leads to flooding.
  • Magnitude of storm surge - Higher storm surges can cause more coastal flooding and damage.
  • The rise of sea level: Higher sea levels can lead to more significant coastal erosion and flooding.
Therefore, according to the given passage all the statements (a, b, and c) are true.
26 Views

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.
The saving of certain wild animals from extinction (1)__________ many years been a problem for zoologists and other specialists, but more recently, the problem has become so (2)_________ and has received so much publicity that most people are now (3)__________ about it. This may at first seem strange because one of the most gratifying developments of the last few years has been the passing of strict laws to protect wild animals and the (4)___________ decline in the hunting of big-game for sport. Why is it then that some rare wild animals are still (5)__________ with extinction, and even some of the less rare ones are rapidly declining in number?

Question:
Select the most appropriate option to fill in the blank 1.

Option 1: has for

Option 2: had for

Option 3: is for

Option 4: was of

Team Careers360 26th Jan, 2024

Correct Answer: has for


Solution : The most appropriate option is the first option.

Explanation: "The saving of certain wild animals from extinction has for many years been a problem." This choice implies that over an extended period (many years), the issue of saving wild animals from extinction has existed. In this sentence, the use of "has for" correctly signifies the ongoing nature of the problem of saving wild animals from extinction over many years.

Therefore, the correct answer is, has for.

9 Views

Question : What is the value of a2 + b2 + c2 – 2ab – 2bc + 2ca?

Option 1: (2a + b + c)2

Option 2: (a – b + c)2

Option 3: (a – b – 2c)2

Option 4: (a + 2b – c)2

Team Careers360 27th Jan, 2024

Correct Answer: (a – b + c)2


Solution : We know that (x + y + z)2 = (x+ y+ z+ 2xy + 2yz + 2zx)
Comparing the RHS of the above formula with the given expression, we get:
x = a, y = –b, and z = c
So, a2 + b2 + c2 – 2ab – 2bc + 2ca = (a – b + c)2
Hence, the correct answer is (a – b + c)2.

4 Views

Question : $\triangle \mathrm{XYZ} \sim \triangle \mathrm{GST}$ and $\mathrm{XY}: \mathrm{GS}=2: 3, \mathrm{XV}$ is the median to the side $\mathrm{YZ}$, and $\mathrm{GD}$ is the median to the side ST. The value of $\left(\frac{\mathrm{YV}}{\mathrm{SD}}\right)^2$ is:

Option 1: $\frac{4}{9}$

Option 2: $\frac{3}{5}$

Option 3: $\frac{1}{4}$

Option 4: $\frac{2}{3}$

Team Careers360 26th Jan, 2024

Correct Answer: $\frac{4}{9}$


Solution :
Given: $\Delta \mathrm{XYZ} \sim \Delta \mathrm{GST}$
$\left(\frac{\mathrm{YV}}{\mathrm{SD}}\right)=\left(\frac{\mathrm{XY}}{\mathrm{GS}}\right)$
$\therefore\left(\frac{\mathrm{YV}}{\mathrm{SD}}\right)^2=\left(\frac{\mathrm{XY}}{\mathrm{GS}}\right)^2=\left(\frac{\mathrm{2}}{\mathrm{3}}\right)^2=\frac{4}{9}$
Hence, the correct answer is $\frac{4}{9}$.

9 Views

Question : Which waterway provides connectivity with mainland India through the India-Bangladesh Protocol route?

Option 1: NW-10

Option 2: NW-15

Option 3: NW-2

Option 4: NW-83

Team Careers360 27th Jan, 2024

Correct Answer: NW-2


Solution : The correct answer is NW-2.

NW-2 is the most significant canal in India's North-East region. It also connects to mainland India via the Indo-Bangladesh Protocol, relieving congestion on the Siliguri Corridor (the sole direct link between mainland India and the North East). The canal is active, with permanent jetties in Pandu and Dhubri and floating jetties at eleven sites.

8 Views

Question : Directions: Which two signs should be interchanged to make the given equation correct?
625 ÷ 25 + 7 × 318 – 112 = 381

Option 1: – and +

Option 2: ÷ and +

Option 3: ÷ and –

Option 4: + and ×

Team Careers360 26th Jan, 2024

Correct Answer: + and ×


Solution : Given:
625 ÷ 25 + 7 × 318 – 112 = 381

Replace the given symbols in the options one by one with the original symbols in the given equation.
First option: – and +
= 625 ÷ 25 – 7 × 318 + 112
= 25 – 7 × 318 + 112
= 25 – 2226 + 112
= 137 – 2226
= –2089 
381
Second option: ÷ and +
= 625 + 25 ÷ 7 × 318 – 112
= 625 + 3.57 × 318 – 112
= 625 + 1135.26 – 112
= 1760.26 – 112
= 1648.26 
381
Third option: ÷ and –
= 625 – 25 + 7 × 318 ÷ 112
= 625 – 25 + 7 × 2.84
= 625 – 25 + 19.88
= 644.88 – 25
= 619.88
381
Fourth option: + and ×
= 625 ÷ 25 × 7 + 318 – 112
= 25 × 7 + 318 – 112
= 175 + 318 – 112
= 493 – 112
= 381

So, only the fourth option satisfies the R.H.S. of the given equation. Hence, the fourth option is correct.

2 Views

Question : The early Turkish rulers ruled between_____________ years over Delhi.

Option 1: 1165 and 1198

Option 2: 1226 and 1290

Option 3: 1206 and 1290

Option 4: 1192 and 1225

Team Careers360 27th Jan, 2024

Correct Answer: 1206 and 1290


Solution : The correct options are 1206 and 1290.

The term "Delhi Sultanate" describes a group of five Muslim kingdoms that spent 320 years primarily centred in Delhi. The first Sultan of Delhi was Qutb ud-Din Aibak, who ruled from 1206 until 1290 under the Early Turkish Dynasty.

119 Views

Question : To go a distance of 144 km upstream, a rower takes 12 hours while it takes her only 9 hours to row the same distance downstream. What is the speed of the stream?

Option 1: 3 km/hr

Option 2: 1 km/hr

Option 3: 1.5 km/hr

Option 4: 2 km/hr

Team Careers360 27th Jan, 2024

Correct Answer: 2 km/hr


Solution : Given: Distance = 144 km
And the time taken to row upstream = 12 hours
And the time taken to row downstream = 9 hours
So, speed of boat in upstream = $\frac{144}{12}$ = 12 km/hr
And speed of boat in downstream = $\frac{144}{9}$ = 16 km/hr
Let x be the speed of the boat in still water and y be the speed of the stream.
So, the speed of the boat in upstream = x – y
⇒ x – y = 12-----------(i)
And the speed of the boat in downstream = x + y
⇒ x + y = 16------------(ii)
Subtracting (i) from (ii), we get:
2y = 4
$\therefore$ y = 2 km/hr
Hence, the correct answer is 2 km/hr.

7 Views

Question : If $A+B=90^{\circ}$ and $\sin A=\frac{3}{5}$, then the value of $\tan B$ is:

Option 1: $\frac{4}{3}$

Option 2: $\frac{5}{4}$

Option 3: $\frac{3}{4}$

Option 4: $\frac{5}{3}$

Team Careers360 26th Jan, 2024

Correct Answer: $\frac{4}{3}$


Solution : Given: $A+B=90^{\circ}$ and $\sin A=\frac{3}{5}$
$\sin A=\frac{3}{5}=\frac{\text{Perpendicular}}{Hypotenuse}$
Let, Perpendicular = $3k$ and Hypotenuse = $5k$ --------------[where, $k$ is constant]
⇒ Base = $\sqrt{(5k)^{2}–(3k)^{2}}$
⇒ Base = $4k$
$\tan A=\frac{\text{Perpendicular}}{Base}$
⇒ $\tan A=\frac{3k}{4k}$
⇒ $\tan (90°–B)=\frac{3}{4}$
⇒ $\cot B=\frac{3}{4}$
⇒ $\tan B=\frac{4}{3}$
Hence, the correct answer is $\frac{4}{3}$.

5 Views

Question : Ajanta and Ellora caves are situated in which state of India?

Option 1: Kerala

Option 2: Odisha

Option 3: Maharashtra

Option 4: Jammu & Kashmir

Team Careers360 26th Jan, 2024

Correct Answer: Maharashtra


Solution : The correct answer is Maharashtra.

The Ajanta and Ellora caves, situated near Aurangabad in Maharashtra, India, are ancient Buddhist architectural marvels. These sites were designated as UNESCO World Heritage Sites in 1983. The Ajanta Caves, nestled amidst the Sahyadri ranges along the Waghora River, were constructed over a span from 200 B.C. to 650 A.D.

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