Staff Selection Commission Combined Graduate Level Exam
Question : Find the mean proportional between 25 and 225.
Option 1: 65
Option 2: 25
Option 3: 75
Option 4: 85
Correct Answer: 75
Solution : Let the mean proportion between 25 and 225 by $x$. So, $x=\sqrt{25\times 225}$ ⇒ $x = \sqrt{5625} = 75$ Hence, the correct answer is 75.
Question : Select the most appropriate option to fill in the blank. There was a ____________accident last night and the inspector on deputy was unable to raise help when she called from the mountains.
Option 1: goofy
Option 2: gloomy
Option 3: serious
Option 4: harsh
Correct Answer: serious
Solution : The correct choice is the third option.
Explanation: Serious is the best fitting word in the context, indicating the severity or gravity of the accident.
The meanings of the other options are as follows:
Question : Which of the following weeds has been found useful to check water pollution caused by industrial affluents?
Option 1: Parthenium
Option 2: Elephant grass
Option 3: Water hyacinth
Option 4: Both (1) and (2) above
Correct Answer: Water hyacinth
Solution : The correct option is - Water hyacinth.
Water hyacinth is a perennial free-floating aquatic plant that scavenges organic and inorganic water contaminants and grows rapidly. The plant can clean up to 40% of contaminated water. Waste water from dairy facilities, tanneries, sugar mills, pulp
Question : Directions: Arrange the following words as per their order in the dictionary and choose the one that comes first. 1. Temple 2. Tenant 3. Terminate 4. Temperature
Option 1: Temple
Option 2: Tenant
Option 3: Terminate
Option 4: Temperature
Correct Answer: Temperature
Solution : Given: 1. Temple 2. Tenant 3. Terminate 4. Temperature
Step 1: Since all the words start with the same letter T, so move on to the next letter. Step 2: The second letter of each word is the same, i.e., e. So, move
Question : The difference between compound interest and simple interest on an amount of Rs. 15,000 for 2 years is Rs. 96. The rate of interest per annum is:
Option 1: 6%
Option 2: 7%
Option 3: 8%
Option 4: 9%
Correct Answer: 8%
Solution : $D=P\left (\frac{r}{100}\right)^{2}$, where D is the difference between simple interest and compound interest for 2 years on Principal $P$ with the rate of interest $r$ per annum compounded annually. ⇒ $96 = 15000\left ( \frac{r}{100}\right )^{2}$ ⇒ $r^2=\frac{960000}{15000}=64$ ⇒ $r$ = 8% Hence, the correct
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: Some pens are boxes. No box is a fan. Some pens are fans. Conclusions: I. No pen is a fan. II. No box is a pen. III. Some fans are pens. IV. Some boxes are pens.
Option 1: Only conclusions I and III follow
Option 2: Only conclusions II and IV follow
Option 3: Only conclusions I and II follow
Option 4: Only conclusions III and IV follow
Correct Answer: Only conclusions III and IV follow
Solution : The possible Venn diagram according to the given statements is as follows –
Let's analyse the conclusions – Conclusion I: No pen is a fan – From the Venn diagram, it is clear that the circles that represent pens and
Question : Which of the following is used as anesthetics?
Option 1: N2
Option 2: N2O
Option 3: CH4
Option 4: CO2
Correct Answer: N2O
Solution : The correct option is N2O.
Nitrous oxide (N2O), popularly known as "laughing gas," is used in some medical and dental procedures as a light anaesthetic. It is given to patients having minor operations or procedures to produce conscious sedation and reduce pain and
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
(All the family members of his) are in Emakulam.
(1) All the members of his family
(2) All his family members
(3) All of his family members
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
Solution : The sentence can be improved using the first option.
The sentence uses the determiner "all" to refer to all the members of the speaker's family. The article "the" is used to refer to a specific group of people or things. The phrase "members of his
Question : Directions: In the following question, select the number that can be placed at the sign of the question mark (?) from the given alternatives.
Option 1: 4
Option 2: 6
Option 3: 8
Option 4: 16
Correct Answer: 4
Solution : The sum of the numbers given in all four blocks except the centre block is equal to the multiplication of digits given in the centre block.
In the first figure – (5 + 6 + 7 + 9) = 27; 93→9 × 3 =
Question : Select the most appropriate option to fill in the blank. She frankly confessed that she couldn’t __________ to purchase a car then.
Option 1: spend
Option 2: afford
Option 3: stand
Option 4: tolerate
Correct Answer: afford
Solution : The second option is the correct choice.
The sentence suggests that the person confessed she couldn't do something related to purchasing a car. The word that fits best in this context is afford, which means to have the financial means or resources to buy or
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