Staff Selection Commission Combined Graduate Level Exam
Question : Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills?
Option 1: Pseudomonas
Option 2: Agrobacterium
Option 3: Clsotridium
Option 4: Nitrosomonas
Correct Answer: Pseudomonas
Solution : The correct option is Pseudomonas.
Pseudomonas putida is a bacterial strain that has been produced through genetic modification and may be used to cure oil spills. Pseudomonas putida is a naturally occurring bacterial species that has been genetically altered to improve its capacity to breakdown
Question : Directions: Select the set in which the numbers are related in the same way as the numbers of the given sets. (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.) (31, 47, 35) (51, 67, 55)
Option 1: (33, 47, 35)
Option 2: (32, 39, 27)
Option 3: (13, 29, 17)
Option 4: (21, 36, 35)
Correct Answer: (13, 29, 17)
Solution : Given: (31, 47, 35); (51, 67, 55)
In the given set of numbers, add 16 to the first number to get the second number and subtract 12 from the second number to get the third number. (31, 47, 35)→31 + 16 = 47;
Question : Directions: After arranging the given words according to dictionary order, which word will come in the third position? 1. Telescope 2. Telephone 3. Telegram 4. Telecast 5. Telepath
Option 1: Telepath
Option 2: Telegram
Option 3: Telephone
Option 4: Telecast
Correct Answer: Telepath
Solution : Given: 1. Telescope 2. Telephone 3. Telegram 4. Telecast 5. Telepath
Step 1: Compare the first, second, third, and fourth letters of each word. Since all the words start with the same letter T, e, l, and e, then move on to the next
Question : The world's largest producer of desalinated sea water is
Option 1: Kuwait
Option 2: Iran
Option 3: Saudi Arabia
Option 4: Iraq
Correct Answer: Saudi Arabia
Solution : The correct answer is Saudi Arabia.
Saudi Arabia is the greatest producer of desalinated sea water in the world. It contributes about 38% of global output. Saudi Arabia has a little freshwater supply and an extremely arid climate. In order to satisfy its water
Question : The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
You should / avail this opportunity / to demonstrate / your skills.
Option 1: You should
Option 2: your skills
Option 3: avail this opportunity
Option 4: to demonstrate
Correct Answer: avail this opportunity
Solution : The error lies in the third option.
The verb avail typically needs an object and should be followed by the reflexive pronoun yourself or another object, followed by the preposition of.
.Therefore, the correct sentence is, "You should avail yourself of
Question : If $\frac{(x+y)}{z}=2$, then what is the value of $[\frac{y}{(y-z)}+\frac{x}{(x-z)}]?$
Option 1: $0$
Option 2: $1$
Option 3: $2$
Option 4: $–1$
Correct Answer: $2$
Solution : Given: $\frac{(x+y)}{z}=2$ ⇒ $y=2z-x$ ⇒ $y-z=z-x$ Now, $[\frac{y}{(y-z)}]+[\frac{x}{(x-z)}]$ = $[\frac{y}{(z-x)}]+[\frac{x}{(x-z)}]$ = $[-\frac{y}{(x-z)}]+[\frac{x}{(x-z)}]$ = $[\frac{-y+x}{(x-z)}]$ = $[\frac{-(2z-x)+x}{(x-z)}]$ [After putting value of $y$] = $[\frac{2(x-z)}{(x-z)}]$ = $2$ Hence, the correct answer is $2$.
Question : 'Loktak' is a
Option 1: Valley
Option 2: Lake
Option 3: River
Option 4: Mountain Range
Correct Answer: Lake
Solution : The correct option is lake.
Loktak Lake is located in the northeastern Indian state of Manipur. Loktak Lake's average depth is roughly 2.7 metres (8.9 feet), however it varies depending on part of the lake. Loktak Lake is the largest freshwater lake in northeastern India
Question : Direction: In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct alternative for the unsolved equation.
If 1 x 3 x 5=1925 and 7 x 9 x 11= 4981121 then find the value of 19 x 21 x 23=?
Option 1: 361529441
Option 2: 361441289
Option 3: 441361289
Option 4: 361441529
Correct Answer: 361441529
Solution : Given:
1 x 3 x 5=1925
Here in the equation, we have–
(1)² = 1 , (3)² = 9 , (5)² = 25
⇒ 1925 .
7 x 9 x 11= 4981121
In this equation, we have–
(7)² = 49 , (9)² = 81 ,
Question : In an election, there were only two candidates. One of the candidates secured 40% of the votes and was defeated by the other candidate by 298 votes. The total number of votes polled is:
Option 1: 745
Option 2: 1460
Option 3: 1490
Option 4: 1500
Correct Answer: 1490
Solution : Given: One of the candidates secured 40% of the votes and was defeated by the other candidate by 298 votes. Votes secured by the losing candidate = 40% Votes secured by the winning candidate = (100 – 40) = 60% According to the question, (60
Question : Directions: Select the correct mirror image of the given combination when the mirror is placed at PQ as shown below.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection. Here, according to the information provided, the mirror is placed on the right side of the figure (on line PQ). So, the left side of the reflected image will appear
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