Staff Selection Commission Combined Higher Secondary Level Exam
Question : Find the third proportion of P and 12, when 8, P, 16, and 18 are in proportion.
Option 1: 16
Option 2: 8
Option 3: 18
Option 4: 12
Correct Answer: 16
Solution : Given, $8, \mathrm{P}, 16$, and 18 are in proportion. So, 8 : $P$ :: 16 : 18 ⇒ $\frac{8}{P}=\frac{16}{18}$ ⇒ $P=9$ Now, third proportional to $a$ and $b$ is given by $\frac{b^2}{a}$, where $a$ = 9, $b$ = 12. So, the third proportional to 9
Question : A star appears twinkling in the sky because of :
Option 1: scattering of light by atmosphere
Option 2: reflection of light by atmosphere
Option 3: refraction of light by atmosphere
Option 4: diffraction of light by atmosphere
Correct Answer: refraction of light by atmosphere
Solution : The correct answer is refraction of light by atmosphere.
Stars appear twinkling in the sky because of refraction of light rays by various layer of atmosphere. Stars are millions of light years away from the earth and they emit their own
Question : Directions: Two positions of a dice are shown below. When the heart shape is at the top what will be at the bottom?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : According to the dice rule, if two positions of the same dice are given with two common faces but in different orientations then out of those two common faces, the faces that are not common are opposite to each other.
Thus, the opposite face of the
Question : The marked price of a trouser is four times the cost price. To earn 64% profit, what should be the discount percentage?
Option 1: 55%
Option 2: 62%
Option 3: 65%
Option 4: 59%
Correct Answer: 59%
Solution : Given, Marked price (MP) of a trouser = 4 × the cost price (CP) ⇒ $\frac{MP}{CP} = \frac{4}{1}$ $\frac{MP}{CP} = \frac{100 + \text{ profit%}}{100 - \text{ Discount%}}$ ⇒ $\frac{4}{1} = \frac{100 + 64}{100 - \text{ Discount%}}$ ⇒ $100 - \text{ Discount%} = \frac{164}{4}$ ⇒ $100
Question : Directions: In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows the given statements. Statements: I. All R is P. II. All P is J. Conclusions: I. All P is R. II. All J is P. III. All R is J.
Option 1: Only conclusion II follows
Option 2: Only conclusion I follows
Option 3: All conclusion follows
Option 4: Only conclusion III follows
Correct Answer: Only conclusion III follows
Solution : The possible Venn diagram, according to the given statements is as follows –
Let's analyse the conclusions – Conclusion (I): All P is R – From the Venn diagram, it is evident that some parts of the circle representing P lie inside
Question : If the length and breadth of a cuboid are increased by 7% and 6%, respectively, then the percentage increase in its volume is:
Option 1: 11.20%
Option 2: 13.42%
Option 3: 18.12%
Option 4: 15.25%
Correct Answer: 13.42%
Solution : Initial length = $l$ New length = $l + 0.07l = 1.07l$ Initial breadth = $b$ New breadth = $b+0.06b = 1.06b$ Initial volume = $v = l\times b\times h$ New volume = $1.07l \times 1.06b \times h = 1.1342 v$ $\therefore$ Percentage increase =
Question : Select the option that can be used as a one-word substitute for the given group of words. One who possesses outstanding technical ability in a particular art or field.
Option 1: Virtuous
Option 2: Virtuoso
Option 3: Gourmand
Option 4: Amateur
Correct Answer: Virtuoso
Solution : The correct choice is the second option.
"Virtuoso" - This word accurately describes one who possesses outstanding technical ability in a particular art or field, especially in music or the fine arts.
The meanings of the other options are as follows:
"Virtuous" - This word
Question : Directions: Select the correct mirror image of the given figure when the mirror is placed at MN as shown.
Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection. Here, according to the information provided, the mirror is placed on the right side of the figure (on line MN). So, the left side of the reflected image will appear
Question : Kamrup is an ancient name of which region of India?
Option 1: Bihar
Option 2: Rajasthan
Option 3: Karnataka
Option 4: Assam
Correct Answer: Assam
Solution : The correct option is Assam.
Assam was once known as Kamrup in ancient times. It was located in present-day Western Assam, between the Manas and Barnadi Rivers, and is comparable to the ancient "Kamapitha". In mythology, it was known as Pragjyotisha.
Question : Zero hour is at the discretion of
Option 1: Prime Minister
Option 2: Speaker
Option 3: Opposition leader
Option 4: President
Correct Answer: Speaker
Solution : The correct option is Speaker.
Zero Hour in the Parliament is a special time during a session when MPs can bring up important issues without giving prior notice. The Speaker of the Lok Sabha decides when it happens and how much time is devoted to
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