Staff Selection Commission Sub Inspector Exam
Question : Directions: Select the option figure in which the given figure is embedded as its part (rotation is NOT allowed).
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Since the rotation is restricted. So, the embedded figure will have the same orientation as the main figure. By comparison of the question figure with all the option figures, it is evident that the given question figure is embedded only in the second option figure.
Hence,
Question : Living organisms have been on Earth for how much per cent of Earth's history?
Option 1: 80%
Option 2: 20%
Option 3: 60%
Option 4: 40%
Correct Answer: 80%
Solution : The correct option is 80%.
Earth is estimated to be around 4.54 billion years old. The earliest evidence of life on Earth comes from fossilized microorganisms, which are 3.5 billion years old. Therefore, living organisms have been present on Earth for a significant portion of
Question : A and B together can do a certain work in $x$ days. Working alone, A and B can do the same work in ($x$ + 8) and ($x$ + 18) days, respectively. A and B together will complete $\frac{5}{6}$th of the same work in:
Option 1: 12 days
Option 2: 8 days
Option 3: 10 days
Option 4: 9 days
Correct Answer: 10 days
Solution : According to the question, One day work of A = $\frac{1}{x + 8}$ work per day One day work of B = $\frac{1}{x + 18}$ work per day One day work of (A + B) = $\frac{1}{x}$ ⇒ $\frac{1}{x + 8 }$ + $\frac{1}{x
Question : Which of the following is used as control rods in Atomic reactor?
Option 1: Sodium
Option 2: Uranium
Option 3: Graphite
Option 4: Boron
Correct Answer: Boron
Solution : The correct option is - Boron
Atomic reactor control rods are made of boron. The fission rate of uranium and plutonium is regulated using control rods that have a high neutron absorption capacity without self-decaying. The rod can also be formed of silver, indium,
Question : Select the most appropriate ANTONYM of the given word. Vague
Option 1: Elegant
Option 2: Regal
Option 3: Definite
Option 4: Dwarf
Correct Answer: Definite
Solution : The third option is correct.
Vague describes something that is unclear, imprecise, or lacking in detail, making it difficult to understand or define. On the other hand, definite is the opposite, suggesting something that is clear, precise, and specific.
Therefore, the antonym of vague is
Question : The measure of three angles of a quadrilateral are in the ratio 1 : 2 : 3. If the sum of these three measures is equal to the measure of the fourth angle, then find the smallest angle.
Option 1: $30^\circ$
Option 2: $40^\circ$
Option 3: $60^\circ$
Option 4: $50^\circ$
Correct Answer: $30^\circ$
Solution : Let the 1st, 2nd and 3rd angles be $x$, $2x$, and $3x$. $\therefore$ The 4th angle = $x+2x+3x=6x$ We know that the sum of the angles of the quadrilateral is $360^\circ$. According to the question, $x+2x+3x+6x=360^\circ$ ⇒ $12x=360^\circ$ ⇒ $x=30^\circ$ Since, the smallest angle is
Question : In Indus Valley Civilisation, the Great Bath is found in which of the following places?
Option 1: Lothal
Option 2: Mohenjo-Daro
Option 3: Mitathal
Option 4: Kalibangan
Correct Answer: Mohenjo-Daro
Solution : The correct answer is Mohenjo-Daro.
Among the ancient Indus Valley Civilisation remains at Mohenjo-Daro in Sindh, Pakistan, the Great Bath is one of the most well-known buildings. The earliest public water tank in the ancient world is a term that has also been used to
Question : Select the option that can be used as a one-word substitute for the given group of words. A person who introduces the performers or contestants in a variety show
Option 1: Calligrapher
Option 2: Compeer
Option 3: Compere
Option 4: Cypher
Correct Answer: Compere
Solution : The correct choice is the third option.
In the context of a person who introduces performers or contestants in a variety show, the term compere specifically relates to this role, overseeing the event's proceedings and engaging with the audience, ensuring a lively and smooth
Question : Directions: If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?
Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection. So, according to the above property and the information provided, the mirror is placed on the right side of the figure (on line MN). So, the left side of the
Question : In 1928, which equation was derived and combined quantum theory and special relativity to describe the behaviour of an electron moving at a relativistic speed?
Option 1: Bernoulli's equation
Option 2: Lorentz equation
Option 3: Helmholtz equation
Option 4: Dirac equation
Correct Answer: Dirac equation
Solution : The correct answer is the Dirac equation.
The Dirac equation, developed by physicist Paul Dirac in 1928, is a relativistic wave equation in particle physics. It comprehensively describes spin-1⁄2 massive particles, known as " Dirac particles" including electrons and quarks, maintaining parity symmetry. This
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