Staff Selection Commission Sub Inspector Exam
Question : One of the main reasons for the defeat of Nawab Siraj ud-Daulah in the Battle of Plassey was that the forces led by ______, one of his commanders, never fought the battle.
Option 1: Mir Khalifa
Option 2: Mahabat Khan
Option 3: Mir Jafar
Option 4: Mir Jumla ll
Correct Answer: Mir Jafar
Solution : The correct option is Mir Jafar
The Battle of Plassey, which took place on June 23, 1757, was a significant event in Indian history during the period of British East India Company rule. The defeat of Nawab Siraj ud-Daulah was influenced by the actions
Question : In a village election, Sharuk got 80% of the total valid votes. 10% of the votes were invalid. If the total number of votes was 4500, then find the number of valid votes the other candidate got.
Option 1: 620
Option 2: 450
Option 3: 530
Option 4: 810
Correct Answer: 810
Solution : The total number of votes is 4500. Given that 10% of the votes were invalid, the number of invalid votes is 10% of 4500, which is 0.10 × 4500 = 450 votes. Therefore, the total number of valid votes is 4500 – 450 = 4050
Question : The present ages of A and B are in the ratio 5 : 6, respectively. After seven years this ratio becomes 6 : 7, then the present age of A in years is:
Option 1: 35 years
Option 2: 32 years
Option 3: 33 years
Option 4: 30 years
Correct Answer: 35 years
Solution : Given: The present ages of A and B are in the ratio of 5 : 6, respectively. After seven years, this ratio becomes 6 : 7. Let the present ages of A and B be $5x$ and $6x$. After 7 years, the ages of
Question : During a journey of 120 km, Rahi drives the first 60 km at the speed of 60 km/hr, the next 30 km at 60 km/hr and the remaining 30 km at the speed of 30 km/hr. Determine the average speed.
Option 1: 48 km/hr
Option 2: 33.33 km/hr
Option 3: 50 km/hr
Option 4: 40 km/hr
Correct Answer: 48 km/hr
Solution : Rahi drives the first 60 km at the speed of 60 km/hr. Time taken $=\frac{60}{60}=1$ hour The next 30 km at 60 km/hr. Time taken $=\frac{30}{60}=\frac{1}{2}=0.5$ hour The remaining 30 km at the speed of 30 km/hr. Time taken $=\frac{30}{30}=1$ hour Total time taken
Question : Which is the most abundant mineral in the Earth's continental crust?
Option 1: Pyroxenes
Option 2: Quartz
Option 3: Feldspar
Option 4: Mica
Correct Answer: Feldspar
Solution : The correct answer is Feldspar
The most prevalent mineral in the continental crust of Earth is Feldspar. It belongs to the silicate mineral class. It is more widely distributed than quartz on Earth. Over 90% of the crust is composed of silicate minerals. Alkali feldspar
Question : If $\sqrt[2]{0.014\times0.14x}=0.014\times0.14\sqrt[2]{y}$, then find the value of $\frac{x}{y}$?
Option 1: 0.000196
Option 2: 0.00196
Option 3: 0.0196
Option 4: 0.196
Correct Answer: 0.00196
Solution : Given: $\sqrt[2]{0.014\times0.14x}=0.014\times0.14\sqrt[2]{y}$ $\frac{\sqrt[2]{0.014\times0.14x}}{\sqrt[2]{y}}=0.014\times0.14$ $\sqrt[2]{\frac{x}{y}}=\frac{0.014\times0.14}{\sqrt[2]{0.014\times0.14}}$ $\sqrt[2]{\frac{x}{y}}=\sqrt[2]{0.014\times0.14}$ Squaring on the both sides of the equation, we get, $(\sqrt[2]{\frac{x}{y}})^2=(\sqrt[2]{0.014\times0.14})^2$ ${\frac{x}{y}}={0.014\times0.14}$ ${\frac{x}{y}}=0.00196$ Hence, the correct answer is 0.00196.
Question : Directions: Select the missing number from the given responses.
Option 1: 87
Option 2: 97
Option 3: 90
Option 4: 82
Correct Answer: 97
Solution : In the given figure, the pattern can be observed running in the clockwise direction. Starting from 4, the pattern followed is – 4 + 5 = 9; 5 + 9 = 14; 9 + 14 = 23; 14 + 23 = 37; 23 + 37
Question : The average of ten numbers is 72. The average of the first four numbers is 69 and that of the next three numbers is 74. The 8th number is 6 more than the 9th number and 12 more than the 10th number. What is the average of the 8th and 9th numbers?
Option 1: 76
Option 2: 76.5
Option 3: 77
Option 4: 77.5
Correct Answer: 77
Solution : Let 8th number be $x$. So, 9th number be $(x - 6)$ and 10th number be $(x - 12)$ The average of 10 numbers = 72 $\therefore$ Sum of 10 numbers = 72 × 10 = 720 According to the question, The
Question : Identify the sentence that correctly uses the indefinite article.
Option 1: Cloud seeding involves use of chemicals that target rain-bearing clouds above a catchment area such as an river, reservoir or an lake.
Option 2: Cloud seeding involves use of chemicals that target rain-bearing clouds above a catchment area such as a river, reservoir or a lake.
Option 3: Cloud seeding involves use of chemicals that target rain-bearing clouds above an catchment area such as a river, reservoir or an lake.
Option 4: Cloud seeding involves use of chemicals that target rain-bearing clouds above an catchment area such as an river, reservoir or a lake.
Correct Answer: Cloud seeding involves use of chemicals that target rain-bearing clouds above a catchment area such as a river, reservoir or a lake.
Solution : The second option is correct.
Explanation: The indefinite article (a) is used before consonant sounds, and (an) is used before vowel sounds. In this
Question : Directions: In the following question, a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. AN, BO, CP, DQ, ?
Option 1: EG
Option 2: ER
Option 3: EH
Option 4: EF
Correct Answer: ER
Solution : Given: AN, BO, CP, DQ, ?
Add 1 to the place value of each letter of the previous term to obtain the next term – AN→A + 1 = B; N + 1 = O BO→B + 1 = C; O + 1 = P
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