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Staff Selection Commission Sub Inspector Exam

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Question :

Bacteriophage was discovered by

Option 1:

Felix d’Herelle and Frederick Twort

Option 2:

A.J. Kluyver and van Niel

Option 3: Paul R Ehrlich

Option 4: Burrill and Smith

Team Careers360 22nd Jan, 2024

Correct Answer:

Felix d’Herelle and Frederick Twort


Solution : The correct answer is Felix d’Herelle and Frederick Twort.

Bacteriophage is a virus that destroys bacteria. The term bacteriophage was coined by Felix d'Herelle in 1918 and was found by Felix d’Herelle and Frederick Twort in the year 1915. Bacteriophage

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Question : The ratio of the two numbers is 5 : 7 and their HCF is 3. Their LCM is:

Option 1: 75

Option 2: 105

Option 3: 125

Option 4: 35

Team Careers360 24th Jan, 2024

Correct Answer: 105


Solution : The two numbers are in the ratio 5 : 7, and their highest common factor (HCF) is 3. Therefore, the numbers are 5 × 3 = 15 and 7 × 3 = 21.
The least common multiple (LCM) of two numbers is given by the

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Question : Directions: Select the option in which the numbers do not share the same relationship as that shared by the given pair of numbers.
(23, 115, 207)

Option 1: (16, 80, 144)

Option 2: (21, 105, 189)

Option 3: (8, 35, 72)

Option 4: (6, 30, 54)

Team Careers360 23rd Jan, 2024

Correct Answer: (8, 35, 72)


Solution : Given:
(23, 115, 207)

Here, 23 × 5 = 115; 23 × 9 = 207

Let's check the options –
First option: (16, 80, 144); 16 × 5 = 80; 16 × 9 = 144
Second option: (21, 105, 189); 21 × 5

21 Views

Question : Directions: Based on the position in the English alphabetical order, three of the following letter clusters are alike in some manner and one is different. Select the odd letter cluster.

Option 1: LNSV

Option 2: FHMP

Option 3: BDIL

Option 4: JLPT

Team Careers360 16th Jan, 2024

Correct Answer: JLPT


Solution : Let's check each option –
First option: LNSV; L+ 2 = N; N + 5 = S; S + 3 = V
Second option: FHMP; F + 2 = H; H + 5 = M; M + 3 = P
Third option: BDIL; B

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Question : The ratio of the radii of two cylinders is $2:3$ and the ratio of their heights is $5:3$. The ratio of their volumes will be:

Option 1: $9:4$

Option 2: $20:27$

Option 3: $4:9$

Option 4: $27:20$

Team Careers360 23rd Jan, 2024

Correct Answer: $20:27$


Solution : Given: The ratio of the radii of two cylinders is $2:3$ and the ratio of their heights is $5:3$.
Let the radii of the first cylinder = $2r$ units
So, the radii of the second cylinder = $3r$ units
Also, let their heights be $5h$

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Question : A moneylender claims to lend money at the rate of 10% per annum simple interest. However, he takes the interest in advance when he lends a sum for one year. At what interest rate does he lend the money?

Option 1: $10$%

Option 2: $10\frac{1}{9}$%

Option 3: $11$%

Option 4: $11\frac{1}{9}$%

Team Careers360 24th Jan, 2024

Correct Answer: $11\frac{1}{9}$%


Solution : Given: Rate = 10%
Let the amount lent be Rs. 100.
Interest =10% of 100 = Rs. 10
Actual amount = 100 – 10 = Rs. 90
Actual rate = $10×\frac{100}{90}=11\frac{1}{9}$%
Hence, the correct answer is $11\frac{1}{9}$%.

21 Views

Question : Select the most appropriate meaning of the given idiom.
Go round in circles

Option 1: Be forced to explain your actions and probably be punished

Option 2: Make no progress in an argument or discussion

Option 3: Become very confused when you are trying to explain something

Option 4: Believe something good about someone even though you could believe either good or bad

Team Careers360 19th Jan, 2024

Correct Answer: Make no progress in an argument or discussion


Solution : The correct option is the second option.

Explanation:
This idiom refers to a situation where people keep discussing or debating a topic without reaching a conclusion or making any progress. It's like going in circles, covering the same

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