Staff Selection Commission Combined Higher Secondary Level Exam
Question : Directions: Identify the figure given in the options which when put in place of (?) will logically complete the series.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : According to the given figure – The image inside the box rotates 90 in a clockwise direction in each figure. So, the next figure of the series will be –
Hence, the second option is correct.
Question : Directions: If A stands for ÷, B stands for ×, C stands for +, D stands for –. What will come in place of the question mark (?) in the following equation? 83 C 7 B 539 A 49 D 29 = ?
Option 1: 131
Option 2: 171
Option 3: 121
Option 4: 180
Correct Answer: 131
Solution : Given: 83 C 7 B 539 A 49 D 29 = ?
After replacing the letters with the mathematical signs, the equation becomes – = 83 + 7 × 539 ÷ 49 – 29 = 83 + 7 × 11 – 29 = 83 +
Question : The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don't find any errors, mark 'No error' as your answer. The food container / is not enough big to meet / the demands of the affected people.
Option 1: No error
Option 2: is not enough big to meet
Option 3: The food container
Option 4: the demands of the affected people.
Correct Answer: is not enough big to meet
Solution : The correct choice is the second option.
Explanation: The error lies in the placement of enough. The correct structure is "big enough", not "enough big". When enough is placed after the adjective, it describes the adjective, whereas if
Question : Directions: In this question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2), and (3), which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (4).
If a man remains as careful as he is in the beginning, there will be no failure.
(1) he was in the beginning
(2) he in the beginning
(3) he at the beginning
(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 compares the state of the man in the present with his state in the past. Hence, the simple past tense should be used in this case when referring to the past action.
Therefore,
Question : Points D, E, and F all lie on the circumference of a circle with centre O. If angle DEF = 48°, then what is a possible value of angle DOF?
Option 1: 84°
Option 2: 96°
Option 3: 90°
Option 4: 48°
Correct Answer: 96°
Solution : The points D, E, and F lie in a circle with centre O. $\angle$DEF = 48$^{\circ}$ The angle subtended by an arc at the centre is double the angle subtended by it at any point on the remaining part of the circle. According to the
Question : 16 women take 12 days to complete a work which can be completed by 12 men in 8 days. 16 men started working and after 3 days 10 men left and 4 women joined them. How many days will it take them to complete the remaining work?
Option 1: 4
Option 2: 6
Option 3: 8
Option 4: 10
Correct Answer: 6
Solution : Work done by 12 men in 8 days = Work done by 16 women in 12 days ⇒ 12 × 8 men = 16 × 12 women ⇒ 1 man = 2 women Now, work done by 12 men in 1 day = $\frac{1}{8}$ Work
Question : A person invested a total sum of Rs. 15,500 in three schemes of simple interest at the annual rate of 4 percent, 6 percent, and 10 percent. At the end of one year, he got the same interest in all three schemes. What is the sum invested at the rate of 6 percent?
Option 1: Rs. 5400
Option 2: Rs. 5000
Option 3: Rs. 5500
Option 4: Rs. 6500
Correct Answer: Rs. 5000
Solution : Total investment = Rs. 15,500 The annual rates of simple interest for these schemes are 4%, 6%, and 10%, respectively. Let's denote the sums invested in the schemes with rates of 4%, 6%, and 10% as P1, P2, and P
Question : Directions: Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. You have to decide which conclusions logically follow from the given statements. Statements: I. Some clowns are scary. II. All scary are ghosts. III. Some ghosts are friendly. Conclusions: I. All ghosts are friendly II. All clowns are ghosts.
Option 1: Only conclusion (I) follows
Option 2: Neither conclusion (I) nor (II) follows
Option 3: Only conclusion (II) follows
Option 4: Both conclusions (I) and (II) follow
Correct Answer: Neither conclusion (I) nor (II) follows
Solution : The possible Venn diagram, according to the given statements is as follows –
Let's analyse the conclusions – Conclusion I: All ghosts are friendly – From the Venn diagram, we can see that the circle representing ghosts intersect the circle
Question : Directions: In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows the given statements. Statements: I. All A is T. II. No T is N. Conclusions: I. Some N is T. II. All N is A. III. Some T is A.
Option 1: Only conclusion I follows
Option 2: Only conclusion III follows
Option 3: Only conclusion II follows
Option 4: All conclusions 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): Some N is T – From the Venn diagram, it is evident that there is a negative relation between N and T.
Question : The golden view of sea shells is due to the:
Option 1: Diffraction
Option 2: Dispersion
Option 3: Polarisation
Option 4: Reflection
Correct Answer: Polarisation
Solution : The correct answer is Polarisation.
The Golden View of the sea shell is due to the polarisation phenomena. It is because of the reflection of the polarised light that results in the Golden view of a sea shell. Polarisation of light refers to the orientation
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