Staff Selection Commission Combined Graduate Level Exam
Question : What is the colour of the flame when unsaturated hydrocarbons burn?
Option 1: Blue
Option 2: Red
Option 3: Green
Option 4: Yellow
Correct Answer: Yellow
Solution : The correct option is Yellow.
Alkenes and alkynes are types of unsaturated hydrocarbons. They are not aromatic. During incomplete combustion of these hydrocarbons, many carbons do not burn, resulting in a yellow flame. Alkanes, on the other hand, are a type of saturated hydrocarbon. They
Question : Harihara and Bukka established an independent state in Karnataka and established the capital city Vijayanagara on the banks of River _____________ in 1336.
Option 1: Betwa
Option 2: Tungabhadra
Option 3: Mahanadi
Option 4: Tapi
Correct Answer: Tungabhadra
Solution : The correct option is Tungabhadra.
Harihara and Bukka established an independent state in Karnataka and founded the capital city of Vijayanagara on the banks of the Tungabhadra River in 1336.
The Vijayanagara Empire was a powerful South Indian empire that flourished from 1336 to
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 given folded paper is unfolded, it will look like –
Hence, the third option is correct.
Question : Directions: If + means subtraction, – means multiplication, ÷ means addition and × means division, then what is the value of the following expression? 3 – 21 + 153 × 17 ÷ 26
Option 1: 84
Option 2: 80
Option 3: 76
Option 4: 58
Correct Answer: 80
Solution : Given: + means subtraction, – means multiplication, ÷ means addition, and × means division. 3 – 21 + 153 × 17 ÷ 26
On replacing the signs in the equation, the equation becomes – = 3 × 21 – 153 ÷ 17 + 26 =
Question : Directions: In a certain code language, PLACE is written as CONHA, and SHOCK is written as QKQNA. How will FROWN be written in that language?
Option 1: QUDQU
Option 2: RVRST
Option 3: RUSRT
Option 4: QVQDU
Correct Answer: QUDQU
Solution : Given: PLACE is written as CONHA, and SHOCK is written as QKQNA.
The pattern followed here is –
Thus, PLACE is coded as CONHA. Likewise, for SHOCK –
Thus, SHOCK is coded as QKQNA. Similarly, follow the same for FROWN –
Thus, FROWN is coded
Question : If $\alpha+\beta=90^{\circ}$ and $\alpha=2 \beta$, then the value of $3 \cos ^2 \alpha-2 \sin ^2 \beta$ is equal to:
Option 1: $\frac{3}{4}$
Option 2: $\frac{3}{2}$
Option 3: $\frac{1}{4}$
Option 4: $\frac{4}{3}$
Correct Answer: $\frac{1}{4}$
Solution : Given that $\alpha + \beta = 90^\circ$ and $\alpha = 2\beta$, Substitute $\alpha$ in terms of $\beta$ into the first equation, $⇒2\beta + \beta = 90^\circ$ $⇒\beta = 30^\circ$ $\therefore \alpha = 60^\circ$ Substitute these values into the expression $3\cos^2\alpha - 2\sin^2\beta$: $3\cos^2(60^\circ) - 2\sin^2(30^\circ)
Question : Three containers have their volumes in the ratio 3 : 4 : 5. They are full of mixtures of milk and water. The mixtures contain milk and water in the ratios (4 : 1), (3 : 1), and (5 : 2), respectively. The contents of all these three containers are poured into a fourth container. The ratio of milk and water in the fourth container is:
Option 1: 4 : 1
Option 2: 151 : 48
Option 3: 157 : 53
Option 4: 5 : 2
Correct Answer: 157 : 53
Solution : Let the volumes of the three containers be $3x$, $4x$, and $5x$. In the container with volume $3x$, Milk $=\frac{4}{4+1}×3x=\frac{12x}{5}$ Water $=\frac{1}{4+1}×3x=\frac{3x}{5}$ In the container with volume $4x$, Milk $=\frac{3}{3+1}×4x=\frac{12x}{4}$ Water $= \frac{1}{3+1}×4x=\frac{4x}{4}$ In the container with volume $5x$, Milk $= \frac{5}{5+2}×5x=\frac{25x}{7}$ Water
Question : Transpiration through leaves is called as
Option 1: Cauline transpiration
Option 2: Foliar transpiration
Option 3: Cuticular transpiration
Option 4: Lenticular transpiration
Correct Answer: Foliar transpiration
Solution : The correct option is Foliar transpiration.
Transpiration through leaves is known as "foliar transpiration." Foliar transpiration is a process in plants in which water vapour is released into the atmosphere through stomata, which are mostly found on the surface of leaves. This water vapour
Question : Select the option that can be used as a one-word substitute for the given group of words. The study of languages.
Option 1: Philology
Option 2: Anthropology
Option 3: Lexicography
Option 4: Philosophy
Correct Answer: Philology
Solution : The correct choice is the first option.
Philology is the branch of study that deals with the structure, historical development, and relationships of languages.
The meanings of other words are:
Question : Direction: In the given question, select the related letter from the given alternatives.
BAD : DDH :: CUT : ?
Option 1: DCV
Option 2: DDX
Option 3: ECW
Option 4: EXX
Correct Answer: EXX
Solution : Given:
Add natural numbers to the letters of word BAD,
B + 2 = 2 + 2 = 4 → D
A + 3 = 1 + 3 = 4 → D
D + 4 = 4 +
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