Staff Selection Commission Combined Graduate Level Exam
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be not correct? + and ×, 5 and 4 I. 4 + 8 × 5 – 7 ÷ 1 = 37 II. 5 × 3 – 4 + 6 ÷ 2 = – 8
Option 1: Only II
Option 2: Neither I nor II
Option 3: Only I
Option 4: Both I and II
Correct Answer: Neither I nor II
Solution : Given: + and ×, 5 and 4 I. 4 + 8 × 5 – 7 ÷ 1 = 37 II. 5 × 3 – 4 + 6 ÷ 2 = – 8
Interchange the numbers and signs in the equations one by
Question : In the figure, $\mathrm{XYZ}$ is a secant and $\mathrm{ZT}$ is a tangent to the circle at $\mathrm{T}$. If $\mathrm{TZ}=12$ $\mathrm{cm}$ and $Y Z=8 \mathrm{~cm}$, then find the length of $XY$.
Option 1: 8 cm
Option 2: 9 cm
Option 3: 6 cm
Option 4: 10 cm
Correct Answer: 10 cm
Solution : According to the question, $ZX \times ZY = ZT^2$ ⇒ $8 \times (YZ + XY) = 12^2$ ⇒ $8 \times (8 + x) = 144$ ⇒ $8 + x = 18$ ⇒ $x = 10$ cm Hence, the correct answer is 10 cm.
Question : Directions: A + B means A is the father of B; A * B means A is the sister of B; A % B means A is the daughter of B; A \$ B means A is the son of B. If L % M + N * O \$ P, then how is L related to P?
Option 1: Sister
Option 2: Daughter
Option 3: Mother
Option 4: Mother-in-law
Correct Answer: Daughter
Solution : Given: A + B ⇒ A is the father of B A * B ⇒ A is the sister of B A % B ⇒ A is the daughter of B A \$ B ⇒ A is the son of B
As per the given
Question : Two persons A and B working separately can sanitise a building in 6 hours and 10 hours, respectively. They work in stretches of one hour alternately. If A begins at 8 a.m., then when will the work be finished?
Option 1: $9\frac{1}{3}$ h
Option 2: $7\frac{1}{3}$ h
Option 3: $6\frac{1}{3}$ h
Option 4: $8\frac{1}{3}$ h
Correct Answer: $7\frac{1}{3}$ h
Solution : Person A can sanitise a building in 6 hrs. Person B can sanitise a building in 10 hrs. Total work = Efficiency$\times$Times Let the total work = LCM of 6 and 10 = 30 units Efficiency of A = $\frac{30}{6}$ = 5 units Efficiency
Question : Which one of the following bio reserves of India is not included in the World Network of Biosphere Reserve?
Option 1: Sundarbans
Option 2: Gulf of Mannar
Option 3: Nanda Devi
Option 4: Corbett
Correct Answer: Corbett
Solution : The correct answer is Corbett.
The Biosphere Reserve program was initiated by UNESCO in 1971; it was known as the Man and Biosphere Reserve program. It is a designation given to large land-based or aquatic ecosystems having natural and cultural significance. Presently, India has
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 Sun is the star at the centre of (1) __________ Solar System. It is a nearly perfect ball of hot plasma. The Sun has inspired us since ancient times. It’s central to mythology and religion in (2) ____________ around the world. It keeps our planet warm enough for living things to grow. It gives us light, so we can see. It is by far the most important (3) _________of energy for life on Earth. It is about a hundred times as wide (4)________ the Earth. If there were no sun, many things wouldn’t occur, like photosynthesis or the presence of oxygen, which would have caused no existence of life. Select the most appropriate option to fill in the blank number 1.
Option 1: huge
Option 2: typical
Option 3: a
Option 4: the
Correct Answer: the
Solution : The correct choice is the fourth option.
In this context, the definite article the is used before "Solar System" because it refers to a specific and well-known solar system—the one that includes Earth.
The meanings of other options are as follows:
Huge means extremely
Question : Plantation of trees on a large scale to check soil erosion are called:
Option 1: Shelter belts
Option 2: Contour ploughing
Option 3: Strip cropping
Option 4: Afforestation
Correct Answer: Afforestation
Solution : The correct answer is Afforestation.
Afforestation is the process of planting of trees and it has various benefits like prevents soil erosion, climate stabilization, better air quality, improve watershed, preservation of wildlife, reversing global warming etc. It also increases the rainfall and improves soil quality.
Question : $-7 p-[3 q-\{8 p-(4 q-10 p)\}]=?$
Option 1: $7p-11q$
Option 2: $11p-7q$
Option 3: $9p-12q$
Option 4: $12p-9q$
Correct Answer: $11p-7q$
Solution : $-7 p-[3 q-\{8 p-(4 q-10 p)\}]$ $= -7p -[3q-(8p-4q+10p)]$ $= -7p -[3q-(18p-4q)]$ $= -7p - [3q-18p+4q]$ $= -7p -7q+18p$ $= 11p-7q$ Hence, the correct answer is $11p-7q$.
Question : Which Governor General had entertained Ranjit Singh with great honour at Ropar?
Option 1: Minto I.
Option 2: William Bentinck .
Option 3: Hastings
Option 4: Auckland .
Correct Answer: William Bentinck .
Solution : The correct option is - William Bentinck.
The Governor General who entertained Maharaja Ranjit Singh with great honor at Ropar was Lord William Bentinck. This event took place in the early 1830s during Lord William Bentinck's tenure as the Governor General of India.
Question : The word India came from the Indus, called ______ in Sanskrit.
Option 1: Bhanu
Option 2: Adya
Option 3: Sarvatra
Option 4: Sindhu
Correct Answer: Sindhu
Solution : The correct option is Sindhu.
The Indus River was called "Sindhu" in Sanskrit, leading to the origin of the word "India." The term "Sindhu" evolved into "Hindu" in Persian, and the Greeks referred to the land beyond the Indus as "Indoi," thus the word
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