Staff Selection Commission Combined Graduate Level Exam
Question : Gautam goes to work at a speed of 12 km/hr and returns home at 10 km/hr. His average speed is:
Option 1: 11 km/hr
Option 2: 22 km/hr
Option 3: 10.9 km/hr
Option 4: 12.5 km/hr
Correct Answer: 10.9 km/hr
Solution : Given: Gautam goes to work at a speed of 12 km/hr. He returns home at a speed of 10 km/hr. Let the distance between home and office be $x$. Then, the total distance is 2$x$. Time taken to reach office $=\frac{x}{12}$ hr Time taken
Question : Statement - I : Complex tissue is made up of more than one type of cells.
Statement - II : Meristems are examples of permanet tissue.
Option 1: Statement i is correct , but statement II is incorrect
Option 2: Statement I is incorcet , but Statement II is correct
Option 3: Both the statements I and II are correct
Option 4: Both the statements I and II are incorrect
Correct Answer: Statement i is correct , but statement II is incorrect
Solution : The correct option is Statement i is correct , but statement II is incorrect
Plant complex tissues are made up of many cell types that collaborate to accomplish specialised activities. Complex tissues include xylem and phloem,
Question : If $x=\frac{\sqrt{5}+1}{\sqrt{5}-1}$ and $y=\frac{\sqrt{5}-1}{\sqrt{5}+1}$, then the value of $\frac{x^{2}+xy+y^{2}}{x^{2}-xy+y^{2}}$ is:
Option 1: $\frac{3}{4}$
Option 2: $\frac{4}{3}$
Option 3: $\frac{3}{5}$
Option 4: $\frac{5}{3}$
Correct Answer: $\frac{4}{3}$
Solution : Given: $x=\frac{\sqrt{5}+1}{\sqrt{5}-1}$ and $y=\frac{\sqrt{5}-1}{\sqrt{5}+1}$, then $x^2=\frac{5+1+2\sqrt{5}}{5+1-2\sqrt{5}}$ and $y^2=\frac{5+1-2\sqrt{5}}{5+1+2\sqrt{5}}$ ⇒ $x^2=\frac{6+2\sqrt{5}}{6-2\sqrt{5}}$ and $y^2=\frac{6-2\sqrt{5}}{6+2\sqrt{5}}$ and, $xy = \frac{\sqrt{5}+1}{\sqrt{5}-1}×\frac{\sqrt{5}-1}{\sqrt{5}+1}=1$ Putting the values, we get: $\frac{x^{2}+xy+y^{2}}{x^{2}-xy+y^{2}}$ = $\frac{\frac{6+2\sqrt{5}}{6-2\sqrt{5}}+1+\frac{6-2\sqrt{5}}{6+2\sqrt{5}}}{\frac{6+2\sqrt{5}}{6-2\sqrt{5}}-1+\frac{6-2\sqrt{5}}{6+2\sqrt{5}}}$ = $\frac{\frac{(6+2\sqrt{5})^2+6^2-(2\sqrt5)^2+(6-2\sqrt{5})^2}{(6)^2-(2\sqrt{5})^2}}{\frac{(6+2\sqrt{5})^2-6^2+(2\sqrt5)^2+(6-2\sqrt{5})^2}{(6)^2-(2\sqrt{5})^2}}$ = $\frac{36+20+24\sqrt5+36-20+36+20-24\sqrt5}{36+20+24\sqrt5-36+20+36+20-24\sqrt5}$ = $\frac{128}{96}$ = $\frac{4}{3}$ Hence, the correct answer is $\frac{4}{3}$.
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. 206, 309, 412, ?, 618, 721
Option 1: 751
Option 2: 749
Option 3: 515
Option 4: 514
Correct Answer: 515
Solution : Given: 206, 309, 412, ?, 618, 721
In the given series, add 103 to the previous number to obtain the next number. 206 + 103 = 309; 309 + 103 = 412; 412 + 103 = 515; 515 + 103 = 618; 618 + 103
Question : Murshid Quli Khan, Alivardi Khan, and Siraj ud-Daulah were all nawabs of ____?
Option 1: Lucknow
Option 2: Varanasi
Option 3: Hyderabad
Option 4: Bengal
Correct Answer: Bengal
Solution : The correct answer is Bengal.
Murshid Quli Khan, Alivardi Khan, and Siraj ud-Daulah were all Nawabs of Bengal. They ruled during different periods in the history of Bengal, with each contributing significantly to the political and cultural landscape of the region.
Question : Direction: In this question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in the two matrices, given below. The columns and rows of Matrix (I) are numbered from 0 to 4 and that of Matrix (II) are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g. 'D' can be represented by 01,13, etc., and 'H' can be represented by 55, 67, etc. Similarly, you have to identify the set for the word.
'LIKE'
Option 1: 56, 58, 03, 02
Option 2: 57, 65, 68, 02
Option 3: 56, 62, 03, 02
Option 4: 57, 68, 40, 02
Correct Answer: 57, 65, 68, 02
Solution : Given: LIKE
Number representations of each letter: L → 85, 76, 57, 98, 69 I → 65, 86, 77, 58, 99 K → 75, 56, 97, 68, 89 E → 30, 21, 02, 43, 14
First option: 56, 58, 03, 02
Question : Which river originates from the Amarkantak plateau?
Option 1: Narmada river
Option 2: Son river
Option 3: Betwa river
Option 4: Godavari river
Correct Answer: Narmada river
Solution : The correct answer is Narmada River.
The Narmada River originates from the Amarkantak Plateau in Madhya Pradesh.
Other options:
Question : What is the reflection of the point (–3, 1) in the line $x=-2$?
Option 1: (–1, 1)
Option 2: (–3, –5)
Option 3: (1, 1)
Option 4: (–3, 5)
Correct Answer: (–1, 1)
Solution : To find: Reflection of the point (–3, 1) in the line $x=-2$. Reflection of a point $(x_1, y_1)$ in a line $x=a$ is $(-x_1+2a, y_1)$. So, reflection of the point (–3, 1) in the line $x=-2$, = (–(–3) + 2(–2), 1) = (–1, 1)
Question : The Reserve Bank of India introduced a comprehensive regulatory framework for NBFC-MFI on __________.
Option 1: 10 December 2015
Option 2: 2 December 2011
Option 3: 8 December 2013
Option 4: 5 December 2012
Correct Answer: 2 December 2011
Solution : The correct option is 2 December 2011.
The Reserve Bank initially implemented a comprehensive regulatory framework for Non-Banking Financial Companies-Micro Finance Institutions (NBFC-MFIs) in December 2011. This framework established eligibility criteria for microfinance loans that were tied to essential features of microfinance, specifically
Question : Directions: In the following question, two statements are given followed by two conclusions I and II. You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements. Statements: 1. All mangoes are golden in colour. 2. No golden-coloured things are cheap. Conclusions: I. All mangoes are cheap. II. Golden-coloured mangoes are not cheap.
Option 1: Only conclusion I follows
Option 2: Only conclusion II follows
Option 3: Either Conclusion I or Conclusion II follows
Option 4: Both conclusions I and II follow
Correct Answer: Only conclusion II follows
Solution : As per the given information, let's analyse the conclusions – Conclusion (I): All mangoes are cheap – Based on the given statements, it is given no golden-coloured things are cheap and all mangoes are golden in colour. Therefore, from this, it can
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