Staff Selection Commission Sub Inspector Exam
Question : A solid right circular cylinder and solid hemisphere stand on equal bases and have the same height. The ratio of their whole surface area is:
Option 1: 3 : 2
Option 2: 3 : 4
Option 3: 4 : 3
Option 4: 2 : 3
Correct Answer: 4 : 3
Solution : Let the radius of the base as $r$ and the height of the cylinder and hemisphere as $h$. The total surface area of a right circular cylinder $=2\pi r(r+h)$ The total surface area of a hemisphere $=3\pi r^{2}$ Given that the cylinder and
Question : Directions: In the given question, select the related letter from the given alternatives. ADHM : ZWSN :: GIKM : ?
Option 1: NOQS
Option 2: TQRN
Option 3: TRPN
Option 4: TNRP
Correct Answer: TRPN
Solution : Given: ADHM : ZWSN :: GIKM : ?
Find the opposite pair of the first term to obtain the second term Write opposite letters of ADHM, to get the second term – A→Z; D→W; H→S; M→N Thus, ADHM is coded as ZWSN. Similarly, follow the
Question : A can complete $\frac{2}{3}$ of a work in 4 days and B can complete $\frac{3}{5}$ of the work in 6 days. In how many days can both A and B together complete the work?
Option 1: $3$
Option 2: $2$
Option 3: $3\frac{3}{4}$
Option 4: $2\frac{7}{8}$
Correct Answer: $3\frac{3}{4}$
Solution : Time taken by A alone to complete $\frac{2}{3}$ of a work = 4 days Time taken by A alone to complete the work = $4 × \frac{3}{2}$ days = 6 days ⇒ Part of work done by A alone in a day = $\frac{1}{6}$ Time
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".
Right knowledge is a (strong) instrument for moulding the character of the young.
(1) powerful
(2) potent
(3) striking
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 1
Solution : The correct choice is the first option.
Powerful is a more common and appropriate adjective to describe an instrument or tool that has a significant impact. It fits well in the context of moulding the character of the young.
The meanings of the other options
Question : Directions: Four pairs of letter–clusters have been given out of which three are alike in some manner, while one is different. Choose the odd one.
Option 1: XHEP–KVRA
Option 2: ARNI–RMIZ
Option 3: OLEV–EVOL
Option 4: TSRA–ZIHG
Correct Answer: XHEP–KVRA
Solution : Let's check each option – First option: XHEP–KVRA; No relation can be depicted. Second option: ARNI–RMIZ; Opposite letters of the first term are written in the reverse order. Third option: OLEV–EVOL; Opposite letters of the first term are written in the reverse order. Fourth option:
Question : If the perimeter of a rhombus is 80 cm and one of its diagonals is 24 cm, then what is the area (in cm2) of the rhombus?
Option 1: 218
Option 2: 192
Option 3: 384
Option 4: 768
Correct Answer: 384
Solution : Given: Perimeter of rhombus = 80 cm Let AB, BD, DC, and CA be the sides, BC($d_1$) and AD($d_2$) be the diagonals of a rhombus meeting at O. Side AB = $\frac{80}{4}$ = 20 cm Diagonal ($d_1$) BC = 24 cm OB = $\frac{1}{2}×24 =
Question : How many seconds will a train 120 m long, running at the rate of 36 km/hr take to cross a bridge of 360 m in length?
Option 1: 48 sec
Option 2: 40 sec
Option 3: 46 sec
Option 4: 36 sec
Correct Answer: 48 sec
Solution : Distance to be covered = 120 + 360 = 480 m Speed = 36 km/h = 36 × $\frac{5}{18}$ = 10 m/sec $\therefore$ Time = $\frac{480}{10}$ = 48 sec Hence, the correct answer is 48 sec.
Question : The Israel Institute of Technology has developed a concept named after the Indian mathematician__________.
Option 1: Kaprekar
Option 2: Aryabhata
Option 3: Ramanujan
Option 4: Bhaskaracharya
Correct Answer: Ramanujan
Solution : The correct option is Ramanujan.
The Israel Institute of Technology has developed a concept named after the legendary Indian mathematician Srinivasa Ramanujan. The concept is called the Ramanujan Machine, and it's not a machine but rather a novel approach to mathematical discovery. This approach
Question : The "Saraswati Samman 2018" has been conferred on the renowned poet:
Option 1: Tishani Doshi
Option 2: Meena Kandasamy
Option 3: K Siva Reddy
Option 4: Akhil Katyal
Correct Answer: K Siva Reddy
Solution : The correct answer is K Siva Reddy.
"Saraswati Samman 2018" was conferred on the renowned Telugu poet K Siva Reddy. It was given for his collection of poems titled Pakkaki Ottigilite (Turning Aside While Lying Down). Saraswati Samman has the highest recognition
Question : Select the most appropriate ANTONYM of the capitalised word in the given sentence.
The lunch menu includes some TEMPTING vegetarian offerings.
Option 1: Repelling
Option 2: Seductive
Option 3: Enticing
Option 4: Tantalising
Correct Answer: Repelling
The word tempting in the sentence implies that the vegetarian offerings on the lunch menu are appealing or attractive, likely to entice or attract interest or desire. The antonym that fits best, in contrast, is repelling, which
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