Staff Selection Commission Combined Graduate Level Exam
Question : Assume that a drop of water is spherical and that its diameter is one-tenth of a cm. A conical glass has a height equal to the diameter of its rim. If 32,000 drops of water fill the glass completely, then the height of the glass (in cm) is:
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 4
Solution : Height of the glass $=h$ cm Radius of the glass $=\frac{h}{2}$ Volume of the glass $=\frac{1}{3}\pi r^2 h=\frac{1}{3}\pi (\frac{h}{2})^2 h$ Radius of the spherical drop $=\frac{1}{2\times10}=\frac{1}{20}$ cm Volume of a spherical drop $=\frac{4}{3}\pi r^3=\frac{4}{3}\pi (\frac{1}{20})^3$ Volume of 32,000 spherical drops $=32000\times\frac{4}{3}\pi (\frac{1}{20})^3$ Now, the volume
Question : If $\tan^4\theta + \tan^2\theta=1$, what is the value of $11(\cos^4\theta+\cos^2\theta)$?
Option 1: – 11
Option 2: 8
Option 3: 0
Option 4: 11
Correct Answer: 11
Solution : Given: $\tan^4\theta + \tan^2\theta=1$ ⇒ $\tan^2\theta(\tan^2\theta+1)=1 [\because \sec^2\theta-\tan^2\theta=1]$ ⇒ $\tan^2\theta \sec^2\theta=1$ $\therefore \tan^2\theta=\cos^2\theta$ $11(\cos^4\theta+\cos^2\theta)$ = $11[(\cos^2\theta)^2+\cos^2\theta]$ = $11(\tan^4\theta + \tan^2\theta)$ = $11×1$ = $11$ Hence, the correct answer is 11.
Question : The radii of two cylinders are in the ratio 3 : 4 and their heights are in the ratio 8 : 5. The ratio of their volumes is equal to:
Option 1: 9 : 10
Option 2: 8 : 9
Option 3: 9 : 11
Option 4: 7 : 10
Correct Answer: 9 : 10
Solution : Given: The radii of two cylinders are in the ratio 3 : 4 and their heights are in the ratio 8 : 5. Let the radii of two cylinders be $3x$ and $4x$ and their heights be $8y$ and $5y$. Use the formulas,
Question : Directions: In a certain code language, PLIERS is coded as MMAFJO, and SHOVEL is coded as FZRLFR. How will WRENCH be coded in the same language?
Option 1: CXJBQU
Option 2: BXJBPV
Option 3: BXJBQU
Option 4: CXIBPV
Correct Answer: BXJBPV
Solution : Given: PLIERS is coded as MMAFJO and SHOVEL as FZRLFR.
Like, PLIERS; PLIERS→SREILP (Reverse the letters); S – 6 = M; R – 5 = M; E – 4 = A; I – 3 = F; L – 2 = J; P – 1 =
Question : Comprehension:
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Swaminathan had a table on which all his things, his coat, cap, slate, ink bottle, and books, were thrown in a confused (1)______ He sat on his stool and shut his eyes to (2) ________ what work he had for the day: first of course there was arithmetic – those five (3)_______ in profit and loss; then there was English – he had to copy down a page from his English lesson and write dictionary meanings of (4) _______ words; and then there was geography. And only two hours before him to do all this heap of work and get (5) ______ for school.
Question:
Select the most appropriate option to fill in the blank number 3.
Option 1: disputes
Option 2: puzzles
Option 3: debates
Option 4: conditions
Correct Answer: puzzles
Solution : The correct choice is the second option.
In the context of the passage, the word "puzzles" fits best to describe the five tasks in profit and loss under arithmetic. The term puzzle implies a sense of complexity or difficulty, which aligns with the nature
Question : 'O' is the circumcentre of triangle ABC lying inside the triangle, then $\angle$OBC + $\angle$BAC is equal to:
Option 1: 90°
Option 2: 60°
Option 3: 110°
Option 4: 120°
Correct Answer: 90°
Solution : Let $\angle$OBC and $\angle$OCB be $\theta$. In $\triangle$OBC, $\angle$OBC + $\angle$OCB + $\angle$BOC = 180° ⇒ $\theta + \theta + \angle$BOC = 180° ⇒ $\angle$BOC = 180° – 2$\theta$ We know that in a circle, the angle subtended by an arc at the centre is
Question : Select the correct active form of the given sentence.
Has the villa been occupied by them?
Option 1: Did they occupied the villa?
Option 2: Had they occupied the villa?
Option 3: Have they occupied the villa?
Option 4: Do they occupied the villa?
Correct Answer: Have they occupied the villa?
Solution : The correct choice is the third option.
Active voice emphasises the doer of the action, while passive voice emphasises the receiver. To convert passive to active, we make the subject perform the action and rephrase the verb.
The structure of the
Question : Directions: Given below is a question followed by two statements I and II. Read both statements carefully to decide which one of them is sufficient to answer the question. Six people - A, B, C, D, E and F are sitting in a straight line facing north. Who sits to the immediate left of D? (I) A sits second from one of the extreme ends of the line. Only two people sit between A and B. E sits to the immediate right of C. (II) C sits third from the left end of the line. Only one person sits between C and F. E sits third to the right of F.
Option 1: Data in statement II alone is sufficient to answer the question while data in statement I is not
Option 2: Data in statement I alone is sufficient to answer the question while data in statement II is not
Option 3: Data in statements I and II together are not sufficient to answer the question
Option 4: Data in statements I and II together are sufficient to answer the question
Correct Answer: Data in statements I and II together are not sufficient to answer the question
Solution : Given: (I) A sits second from one of the extreme ends of the line. Only two people sit between A and B. E sits to the immediate right of C.
(II) C
Question : Mercury is a:
Option 1: solid metal
Option 2: liquid metal
Option 3: Solid non-metal
Option 4: liquid non-metal
Correct Answer: liquid metal
Solution : The correct answer is liquid metal.
Mercury is a liquid metal at room temperature. Mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps etc.
Question : Comprehension: In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Music can improve mood, decrease pain and anxiety, and facilitate opportunities for emotional expression. Research (1)______ that music can benefit our physical and mental health in numerous ways. Music can (2)______ the brain’s production of the hormone dopamine. This increased dopamine production helps (3)________ feelings of anxiety and depression. Music is processed directly by the amygdala, which is the part of the brain (4)________ in mood and emotions. By reducing stress levels and providing a strong competing stimulus to the pain (5) ________ that enter the brain, music therapy can assist in pain management.
Select the most appropriate option to fill in the blank 5.
Option 1: deter
Option 2: signals
Option 3: deform
Option 4: substance
Correct Answer: signals
In the context of the sentence, the phrase "stimuli to the pain" suggests that there are signals related to pain entering the brain. The correct word to describe these signals is signals. The sentence implies that music
The Question containing Inaapropriate or Abusive Words
Question lacks the basic details making it difficult to answer
Topic Tagged to the Question are not relevant to Question
Question drives traffic to external sites for promotional or commercial purposes
The Question is not relevant to User
And never miss an important update