Staff Selection Commission Combined Higher Secondary Level Exam
Question : A and B working separately can do a piece of work in 9 and 15 days respectively. If they work on alternate days, starting with A, then the work will be completed in:
Option 1: 10 days
Option 2: 11 days
Option 3: 9 days
Option 4: 12 days
Correct Answer: 11 days
Solution : Given: A and B working separately can do a piece of work in 9 and 15 days respectively. They work on alternate days, starting with A. Let the total work = LCM of 9 and 15 = 45 units A’s 1 day work =
Question : The total surface area of a solid hemisphere of diameter 14 cm is (use $\pi=\frac{22}{7}$ ):
Option 1: 522 cm2
Option 2: 462 cm2
Option 3: 428 cm2
Option 4: 584 cm2
Correct Answer: 462 cm2
Solution : Diameter = 14 cm Radius, $r = \frac{14}{2} = 7$ cm The total surface area of a hemisphere = $3\pi r^2= 3 \times \frac{22}{7} \times 7^2 = 462$ cm2 Hence, the correct answer is 462 cm2.
Question : Who introduced the Mansabdari system into the administration under the Mughals?
Option 1: Akbar
Option 2: Shah Jahan
Option 3: Aurangzeb
Option 4: Jahangir
Correct Answer: Akbar
Solution : The correct option is Akbar.
The Mansabdari system, introduced by Akbar, was unique to the Mughal Empire's civil and military administrative systems. Under this system, each officer was awarded a rank. The lower rank was ten, and the highest was 5000 for the nobles; near
Question : Law of Demand states that there is a negative relationship between ______.
Option 1: demand for a commodity and its supply
Option 2: demand for a commodity and its price
Option 3: tax on a commodity and its price
Option 4: supply of a commodity and its price
Correct Answer: demand for a commodity and its price
Solution : The correct option is demand for a commodity and its price.
The Law of Demand asserts a negative relationship between the price of a commodity and the quantity demanded. As the price rises, demand tends to decrease, and
Question : Directions: Select the correct option that indicates the arrangement of the given words in a logical and meaningful order. 1. Thighs 2. Stomach 3. Nose 4. Lips 5. Skull
Option 1: 1, 2, 5, 3, 4
Option 2: 1, 2, 3, 4, 5
Option 3: 1, 2, 4, 3, 5
Option 4: 1, 2, 3, 5, 4
Correct Answer: 1, 2, 4, 3, 5
Solution : Given: 1. Thighs 2. Stomach 3. Nose 4. Lips 5. Skull
Starting from the top of the human body, we have the skull, which houses and protects the brain. Just below that, we have the nose, which is responsible for our
Question : A substance used as an antifreeze in radiators of automobiles is:
Option 1: Methyl alcohol and H2O.
Option 2: Methyl alcohol
Option 3: Ethyl alcohol
Option 4: Ethyl alcohol and H2O.
Correct Answer: Methyl alcohol and H2O.
Solution : The correct option is Methyl alcohol and H2O.
Methyl alcohol (CH3OH), usually known as methanol, is a kind of alcohol that may be used as an antifreeze in automotive radiators. It works as a coolant and
Question : Select the most appropriate option that can substitute the underlined segment in the given sentence.
Mr Arvind was accused of beating up the students in the class.
Option 1: accused of beating up off the
Option 2: accused of beating up of the
Option 3: accused of beating up on the
Option 4: accused of beating up in the
Correct Answer: accused of beating up on the
Solution : The correct choice is the third option.
The preposition "before" should be replaced with "on," as it helps correct the phrase "beat up on," which means "to assault and injure someone".
Therefore, the correct sentence is: "Mr. Arvind was accused
Question : Select the most appropriate idiom for the given situation.
Shayam was accused of bribery, but he submitted proof of his innocence.
Option 1: Buying the pig in a poke.
Option 2: Cast pearls before they swine.
Option 3: Chapter and verse.
Option 4: Beating about the bush.
Correct Answer: Chapter and verse.
The idiom, chapter and verse means giving precise details or citing specific evidence about something. It means providing detailed information or being able to refer to specific sources accurately, which makes it the appropriate choice.
Question : Two parallel lines touch the circles at P and Q. The area of the circle is 154 cm2. Find the length of PQ (Take $\pi=\frac{22}{7}$)
Option 1: 85.2 cm
Option 2: 14 cm
Option 3: 7 cm
Option 4: 77 cm
Correct Answer: 14 cm
Solution : Given: Area of the circle = 154 $cm^2$ We know that, Area of the circle = $\pi r^2$ According to the question, 154 = $\pi r^2$ ⇒ 154 = $\frac{22}{7}×r^2$ ⇒ $\frac{154×7}{22}$ = $r^2$ ⇒ $r$ = 7 Thus, length of PQ = 7
Question : Directions: How many triangles are there in the given figure?
Option 1: 16
Option 2: 17
Option 3: 20
Option 4: 18
Correct Answer: 17
Solution : The given figure can be labelled as shown below –
Now, in the above figure, there are a total of 17 triangles. They are ABK, BCG, DGN, DEF, HIF, IJK, LUT, STM, QRS, OQP, jPZ, igh, gbf, abY, Yec, cXW, WVd.
Therefore, there are 17
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