Staff Selection Commission Combined Graduate Level Exam
Question : Who invented radar?
Option 1: Fred Morrison
Option 2: Albert Hoyt Taylor and Leo C. Young
Option 3: George Van Tassel
Option 4: Wilhelm Conrad Roentgen
Correct Answer: Albert Hoyt Taylor and Leo C. Young
Solution : The correct option is Albert Hoyt Taylor and Leo C. Young.
Working with the US Navy, researchers Albert Hoyt Taylor and Leo C. Young developed radar in 1922. A radar is a kind of location system that measures an
Question : Directions: From the given option figures, select the one in which the question figure is embedded.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As there is no restriction on the rotation of the figure, we will check all possible angles where the question figure can fit itself in all the given option figures. The question figure is embedded only in the fourth option figure.
Hence, the fourth option is
Question : The area of triangle with vertices A(0, 8), O(0, 0), and B(5, 0) is:
Option 1: 8 sq. units
Option 2: 13 sq. units
Option 3: 20 sq. units
Option 4: 40 sq. units
Correct Answer: 20 sq. units
Solution : Let (x1, y1) = (0, 8) (x2, y2) = (0, 0) (x3, y3) = (5, 0) Area of a triangle with vertices (x1, y1), (x2, y2),
Question : What is the value of $\tan 6^{\circ} × \tan 45^{\circ} × \tan 84^{\circ}$?
Option 1: $1$
Option 2: $\tan 6^{\circ} \times \tan 39^{\circ}$
Option 3: $3$
Option 4: $\tan 6^{\circ}+\tan 45^{\circ}+\tan 84^{\circ}$
Correct Answer: $1$
Solution : $\tan 6^{\circ} × \tan 45^{\circ} × \tan 84^{\circ}$ = $\tan 6^{\circ} × \tan 45^{\circ} × \tan (90^{\circ}-6^{\circ})$ = $\tan 6^{\circ} × \tan 45^{\circ} × \cot 6^{\circ}$ = $\tan 6^{\circ} × \tan 45^{\circ} × \frac{1}{\tan 6^{\circ}}$ = $\tan 45^{\circ}$ = $1$ Hence, the correct answer is
Question : 'Hind Swaraj' or 'Indian Home Rule' is written by which of the following freedom fighters?
Option 1: Dadabhai Naoroji
Option 2: Mahatma Gandhi
Option 3: Bal Gangadhar Tilak
Option 4: Annie Besant
Correct Answer: Mahatma Gandhi
Solution : The correct option is Mahatma Gandhi.
"Hind Swaraj" by Mahatma Gandhi, published in 1909, is a seminal work advocating Indian self-rule. It critiques modern civilisation's materialism, emphasising moral, and spiritual values. He promoted nonviolent resistance (Satyagraha) as the path to India's independence from
Question : Which crop grows best on black soil?
Option 1: Cotton
Option 2: Coffee
Option 3: Maize
Option 4: Millets
Correct Answer: Cotton
Solution : The correct option is Cotton.
Cotton is known to grow well in black soils, particularly in certain regions with specific soil types. Black soils have good moisture retention properties, which are beneficial for crops like cotton that require a consistent water supply throughout the
Question : Directions: In the following question, out of the four alternatives, select the alternative that will improve the bracketed part of the sentence. In case no improvement is needed, select "No Improvement".
He (would surely assist me) if I had requested him to do so.
(1) would surely assisted me
(2) would have surely assisted me
(3) will have surely assisted me
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (2)
Solution : The correct choice to improve the sentence is the second option.
Explanation: This option corrects the verb tense and structure in the sentence. It uses "would have" to indicate a past unreal condition, which matches the use of "if I had requested him to do
Question : If the side of an equilateral triangle is 8 cm, then find the area of the triangle (correct to two decimal places).
Option 1: 27.17 cm2
Option 2: 27.27 cm2
Option 3: 27.71 cm2
Option 4: 27.72 cm2
Correct Answer: 27.71 cm2
Solution : Given: The side of an equilateral triangle = 8 cm So, the area of the equilateral triangle = $\frac{\sqrt3 a^2}{4}$ = $\frac{\sqrt3× 8^2}{4}$ = $16\sqrt3$ = 16 × 1.732 = 27.71 cm2 Hence, the correct answer is 27.71 cm2.
Question : Which of the following was the debutant team in the ICC women T20 World Cup 2020?
Option 1: Thailand
Option 2: Bangladesh
Option 3: Ireland
Option 4: Afghanistan
Correct Answer: Thailand
Solution : The correct answer is Thailand.
Thailand qualified for a Women's T20 World Cup competition for the first time. Following the end of the qualification round, Bangladesh was assigned to Group A, while Thailand was assigned to Group B. Thailand's participation in the ICC Women's T20
Question : The phenomenon of raising the outer edge of the curved roads above the inner edge to provide the necessary centripetal force to the vehicles to take a safe turn is called __________________.
Option 1: Banking of roads
Option 2: Cornering of roads
Option 3: Elevation of roads
Option 4: Tempering of roads
Correct Answer: Banking of roads
Solution : The correct option is the Banking of roads.
A construction method known as road banking is used to make curving roads safer for vehicles to travel on at faster speeds. The road surface can be carefully tilted to raise the outer edge
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