Staff Selection Commission Combined Higher Secondary Level Exam
Question : Directions: A piece of paper is folded and cut as shown below in the question figures. From the given answer figures, indicate how it will appear when opened.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the paper is unfolded, the following figures will be obtained –
Hence, the fourth option is correct.
Question : Select the most appropriate 'one word' for the expression given below. One who cures eye disease.
Option 1: Ophthalmologist
Option 2: Prologist
Option 3: Phonologist
Option 4: Biologist
Correct Answer: Ophthalmologist
Solution : The correct answer is the first option.
The most appropriate 'one word' for the expression "one who cures eye disease" is ophthalmologist. This term is derived from the Greek words "ophthalmos" (meaning "eye") and "logos" (meaning "study" or "science"). An ophthalmologist is a medical
Question : Directions: In the following question, which one set of letters/numbers when sequentially placed at the gaps in the given letter series shall complete it? a_baa_baa_ba
Option 1: bbb
Option 2: bab
Option 3: bba
Option 4: aab
Correct Answer: bbb
Solution : Given: a_baa_baa_ba
To fill the series we have to divide the series – a_ba / a_ba / a_ba Let's check the option – First option: bbb; abba / abba / abba (abba is repeated in the series.) Second option:
Question :
Directions: In the following question, select the related number from the given alternatives. 42 : 20 :: 64 : ?
Option 1: 31
Option 2: 32
Option 3: 40
Option 4: 42
Correct Answer: 31
Solution : Given: 42 : 20 :: 64 : ?
The pattern is as follows – Like, 42 : 20→(42 ÷ 2) – 1 = 21 – 1 = 20 Similarly, follow the same pattern for 64 : ?→(64 ÷ 2) – 1 = 32 – 1
Question : In a mixture of 178 litres, the ratio of water and milk is 5 : 7. How much water should be added to make the ratio of water and milk 3 : 4?
Option 1: $3 \frac{17}{24}$ litres
Option 2: $3 \frac{13}{24}$ litres
Option 3: $2\frac{11}{24}$ litres
Option 4: $2\frac{23}{24}$ litres
Correct Answer: $3 \frac{17}{24}$ litres
Solution : Total quantity = 178 litres Quantity of water = $178 \times \frac{5}{12} = \frac{890}{12}$ litres Quantity of milk = $178 \times \frac{7}{12} = \frac{1246}{12}$ litres Now, after adding $x$ litres of water. $⇒\frac{\frac{890}{12} + x}{\frac{1246}{12}} = \frac{3}{4}$ $⇒\frac{\frac{890+12x}{12}}{ \frac{1246}{12}} = \frac{3}{4}$ $⇒\frac{890+12x}{1246} =
Question : If $\theta$ is an acute angle and $\sin \theta \cos \theta=2 \cos ^3 \theta-\frac{1}{4} \cos \theta$, then the value of $\sin \theta$ is:
Option 1: $\frac{\sqrt{15}-1}{8}$
Option 2: $\frac{\sqrt{15}-1}{4}$
Option 3: $\frac{\sqrt{15}+1}{4}$
Option 4: $\frac{\sqrt{15}-1}{2}$
Correct Answer: $\frac{\sqrt{15}-1}{4}$
Solution : Given that $\sin \theta \cos \theta=2 \cos ^3 \theta-\frac{1}{4} \cos \theta$ ⇒ $\sin \theta=2 \cos ^2 \theta-\frac{1}{4}$ ⇒ $\sin \theta=2-2 \sin ^2 \theta-\frac{1}{4}$ ⇒ $2 \sin ^2 \theta + \sin \theta=\frac{7}{4}$ Let $\sin\theta=x$ Hence, the Expression becomes: $8x^2+4x-7=0$ Comparing with $ax^2+bx+c=0$ $a=8, b=4,$ and $c=-7$
Question : A table fan is marked at INR 1,700 and a discount of 15% is given. What is its selling price (in INR)?
Option 1: 1,454
Option 2: 1,425
Option 3: 1,445
Option 4: 1,554
Correct Answer: 1,445
Solution : Marked price = INR 1,700 Discount = 15% of marked price Selling price = 85% of marked price = 0.85 × 1700 = INR 1,445 Hence, the correct answer is 1,445.
Question : Which one of the following tribes practices pastoral nomadism?
Option 1: Boro
Option 2: Masai
Option 3: Pygmies
Option 4: Eskimo
Correct Answer: Pygmies
Solution : The correct answer is Pygmies.
Pygmies are an African tribe found in Rwanda, Burundi, Uganda, the Democratic Republic of Congo, and the Central African Republic. This tribe is known for its nomadic pastoral practices. The Gujjar tribe in Jammu Kashmir is a nomadic pastoral
Question : Direction: The following question is based on the table given below which shows the production of number of scooters by a company during the first half of 1992. Study the table and answer the question.
Production of scooters by a company during first half of 1992
Month
Type
The total number of scooters produced by the company, during the first half of 1992 is:
Option 1: 90
Option 2: 143
Option 3: 623
Option 4: 197
Correct Answer: 623
Solution : The total number of scooters produced by the company during the first half of 1992 is the sum of the total production for each month from January to June. $\therefore$ The total number of scooters produced by the company = 100 + 105 + 108
Question : Directions: In the following question, some parts of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select 'No Error'.
Seldom if ever (1) / nature does operate (2) / in closed and separate compartments. (3) / No Error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (2)
Solution : The correct choice is the second option.
Explanation: The phrase, ''seldom if ever'' means rarely or almost never. When a sentence begins with ''seldom if ever'', the following part of the sentence follows the law of inversion. The law of inversion means that
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