Staff Selection Commission Combined Graduate Level Exam
Question : A alone can finish a work in 15 days. A works only for the first two days and the last two days. The rest work is done by B and the work is completed in 20 days. In how many days A and B together can finish the work?
Option 1: $\frac{90}{8}$
Option 2: $\frac{80}{7}$
Option 3: $\frac{80}{9}$
Option 4: $\frac{70}{8}$
Correct Answer: $\frac{80}{9}$
Solution : Time taken by A alone to do the work = 15 Work done by A alone in a day = $\frac{1}{15}$ Work done by A in the first and last two days = $\frac{4}{15}$ Work done by B in 16 days = 1 – $\frac{4}{15}$ = $\frac{11}{15}$ Work done by B alone in a day = $\frac{11}{15×16}$ = $\frac{11}{240}$ Work done by A and B together in a day = $\frac{1}{15}$+$\frac{11}{240}$ = $\frac{27}{240}$ = $\frac{9}{80}$ $\therefore$ Time taken by A and B together to do the work = $\frac{80}{9}$ days Hence, the correct answer is $\frac{80}{9}$.
Question : Directions: In the question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2), and (3) that may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (4).
You can't avoid notifying the building while travelling.
(1) avoid to look
(2) avoid to noticing
(3) avoid noticing
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (3)
Solution : The third option is the correct choice for the sentence.
In this context, avoid noticing is the appropriate phrase because it conveys the idea that we cannot refrain from observing or paying attention to the building while travelling.
The other options, avoid to look and avoid to noticing, are grammatically incorrect and do not fit the context of the sentence.
Therefore, the correct sentence is: "You can’t avoid noticing the building while travelling."
Question : Directions: Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All Tim is Jack. No Jack is Ben. Some Ben is Ruth. Conclusions: I. No Ruth is Jack. II. Some Ben is Jack. III. No Ben is Tim.
Option 1: Only conclusions I and II follow
Option 2: Only conclusion III follows
Option 3: Only conclusion I follows
Option 4: Only conclusions I and III follow
Correct Answer: Only conclusion III follows
Solution : The possible Venn diagram, according to the given statements is as follows –
Let's analyse the conclusions – Conclusion (I): No Ruth is Jack – From the Venn diagram, it is evident that there is no direct relation between Ruth and Jack. So, no definite relation can be drawn. Therefore, this conclusion does not follow. Conclusion (II): Some Ben is Jack – From the Venn diagram, it is evident that there is a negative relation between Ben and Jack. So, this conclusion does not follow. Conclusion (III): No Ben is Tim – From the Venn diagram, it is evident that all Tim is Jack and no Jack is Ben. So, it can be concluded that no Ben is Tim.
So, the only conclusion III follows. Hence, the second option is correct.
Question :
"Green banking" means:
Option 1:
banks financing agriculture
Option 2:
banks financing irrigation projects
Option 3: banks financing farmers
Option 4: banks financing pro-environmental projects
Correct Answer: banks financing pro-environmental projects
Solution : The correct answer is banks financing pro-environmental projects.
"Green banking" refers to banks sponsoring pro-environmental projects and efforts that have a good influence on the environment and contribute to long-term sustainability. Renewable energy, energy efficiency, sustainable agriculture, clean technology, and other environmentally beneficial areas can all be included in these initiatives. Banks play an active role in encouraging environmental protection, and sustainable development by giving financial assistance to such programmes.
Question : Select the most appropriate option to improve the underlined segment in the given sentence. If there is no need to improve it, select ‘No improvement required’.
I found my bag to lie where I had left it.
Option 1: No improvement required
Option 2: to be lying
Option 3: lying
Option 4: to lay
Correct Answer: lying
Solution : The correct choice is the third option.
Explanation:
The correct verb form to be used here is the present participle form, which is lying. Thus, to lie should be replaced with lying i.e. gerund form of the verb, to make the sentence grammatically accurate.
Therefore, the correct sentence is: I found my bag lying where I had left it.
Question : Select the option that expresses the given sentence in passive voice.
Rahul knows Shahbaz since childhood.
Option 1: Shahbaz was known to Rahul since childhood.
Option 2: Shahbaz is known to Rahul since childhood.
Option 3: Shahbaz known by Rahul since childhood.
Option 4: Shahbaz has known Rahul since childhood.
Correct Answer: Shahbaz is known to Rahul since childhood.
Solution : The correct choice is the second option.
Passive voice is the voice in which the object experiences an action rather than the object experiencing an action rather than the person that performs the action. Hence, the object in the active sentence becomes the subject in the passive voice.
The structure of the passive voice in the case of the simple present tense is: "Singular object + is + past participle form of the verb + prepositional phrase."
Therefore, the right answer is: "Shahbaz is known to Rahul since childhood."
Question : If $\frac{11-13x}{x}+\frac{11-13y}{y}+\frac{11-13z}{z}=5$, then what is the value of $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}$?
Option 1: $1$
Option 2: $\frac{13}{11}$
Option 3: $\frac{13}{5}$
Option 4: $4$
Correct Answer: $4$
Solution : Given: $\frac{11-13x}{x}+\frac{11-13y}{y}+\frac{11-13z}{z}=5$ $⇒\frac{11}{x}-\frac{13x}{x}+\frac{11}{y}-\frac{13y}{y}+\frac{11}{z}-\frac{13z}{z}=5$ $⇒\frac{11}{x}+\frac{11}{x}+\frac{11}{x}-39=5$ $⇒11(\frac{1}{x}+\frac{1}{y}+\frac{1}{z})=44$ $\therefore\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=\frac{44}{11}=4$ Hence, the correct answer is $4$.
Conglobate gland is a leaf like structure found in:
Female Cockroach
Male Cockroach
Option 3: Male Ascaris
Option 4: Female Ascaris
Correct Answer:
Solution : The correct option is male cockroach.
The "conglobate gland" is a male cockroach structure. In male cockroaches, the conglobate gland is a specialised gland connected with the reproductive system. It's termed a "conglobate" structure because it looks like a folded leaf. This gland creates and stores specific substances that are important in male cockroach mating behaviour. Male cockroaches may produce these glandular fluids during courting as part of their reproductive displays or to attract females.
Question : Directions: A is taller than B, C is taller than A. D is taller than E but shorter than B. Who is the tallest?
Option 1: C
Option 2: A
Option 3: D
Option 4: B
Correct Answer: C
Solution : Given: A is taller than B; A > B C is taller than A; C > A D is taller than E but shorter than B; B > D > E
By concluding all the given information, we have – E < D < B < A < C
So, C is the tallest. Hence, the first option is correct.
Question : Direction: From the given alternative words, select the word which can be formed using the letters of the given word.
IMMEDIATELY
Option 1: DIALECT
Option 2: LIMITED
Option 3: DIAMETER
Option 4: DICTATE
Correct Answer: LIMITED
Solution : Given: IMMEDIATELY
Let's compare the given options –
First option: DIALECT
All the letters of DIALECT are not present in the word IMMEDIATELY.
Second option: LIMITED
All the letters of LIMITED are present in the word IMMEDIATELY.
Third option: DIAMETER
All the letters of DIAMETER are not present in the word IMMEDIATELY.
Fourth option: DICTATE
All the letters of DICTATE are not present in the word IMMEDIATELY.
So, the word LIMITED can be formed using the word IMMEDIATELY.
Hence, the second option is correct.
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