Staff Selection Commission Combined Graduate Level Exam
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
Question : Direction: A boy starts from home in the early morning and walks straight for 8 km, facing the sun. Then he takes a right turn and walks for 3 kilometers. Then he turns right again and walks for 2 km, and then turns left and walks for 1 km. then he turns right and travels for 1 km and then turns right and travels for 4 km straight. How far is he from the starting point?
Option 1: 4 km
Option 2: 5 km
Option 3: 6 km
Option 4: 2 km
Correct Answer: 5 km
Solution : As per the given information, the movement of a boy will look as follows -
In the Given Figure, A is the starting point and H is the finishing point. So, AH is the distance from the starting point.
Here, AB = 8 km,
Question : Below are a few statements given about afforestation.
A. Afforestation could prevent flooding.
B. Afforestation can balance our ecosystem.
Which of the above statements is/are correct?
Option 1: Both A and B are incorrect
Option 2: Only B
Option 3: Both A and B
Option 4: Only A
Correct Answer: Both A and B
Solution : The correct answer is Both A and B.
There are two ways that an increase in forest cover can mitigate floods. It aids in lessening both soil erosion and unexpected flooding. Water trickles down the roots of trees, slowing it down
Question : Directions: Rahul attended a competition, wherein his mother's paternal grandfather's only son's only granddaughter was fighting against the clock. How is the person in the competition related to Rahul?
Option 1: Sister
Option 2: Maternal grandmother
Option 3: Mother
Option 4: Daughter
Correct Answer: Sister
Solution : As per the given information, the family tree will be as follows –
Here, the quadrilateral represents the male, and the circular figure represents the female in the figure.
So, from the above family tree, that person is the sister of Rahul. Hence, the first
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