Staff Selection Commission Combined Higher Secondary Level Exam
Question : Which article of the Indian Constitution empowers Indian Parliament to amend the constitution?
Option 1: Article 368
Option 2: Article 252
Option 3: Article 254
Option 4: Article 256
Correct Answer: Article 368
Solution : The correct option is Article 368.
Article 368 of the Indian Constitution outlines the framework for constitutional amendments. Article 368 of the Indian Constitution addresses the method and authority for amending the Constitution. It covers the various methods for making amendments as well
Question : Directions: In the following question, select the missing number from the given alternatives:
Option 1: 9
Option 2: 8
Option 3: 6
Option 4: 7
Correct Answer: 6
Solution : Given:
Adding the numbers in each column, Column 1: 6 + 7 + 3 = 16 Column 2: 10 + 2 + 4 = 16 Similarly for Column 3: 9 + 1 + ? = 16
Question : Simplify: $\sqrt{\frac{4\frac{1}{7}-2\frac{1}{4}}{3\frac{1}{2}+1\frac{1}{7}}+\frac{2}{2+\frac{1}{2+\frac{1}{5-\frac{1}{5}}}}}$
Option 1: $1$
Option 2: $4$
Option 3: $\sqrt{\frac{159}{130}}$
Option 4: $2$
Correct Answer: $\sqrt{\frac{159}{130}}$
Solution : $\sqrt{\frac{4\frac{1}{7}-2\frac{1}{4}}{3\frac{1}{2}+1\frac{1}{7}}+\frac{2}{2+\frac{1}{2+\frac{1}{5-\frac{1}{5}}}}}$ = $\sqrt{\frac{\frac{29}{7}-\frac{9}{4}}{\frac{7}{2}+\frac{8}{7}}+\frac{2}{2+\frac{1}{2+\frac{5}{24}}}}$ = $\sqrt{\frac{\frac{53}{28}}{\frac{65}{14}}+\frac{2}{2+\frac{24}{53}}}$ = $\sqrt{\frac{53}{130}+\frac{106}{130}}$ = $\sqrt{\frac{159}{130}}$ Hence, the correct answer is $\sqrt{\frac{159}{130}}$.
Question : If four-fifths of five-sixths of one-eighth of a certain number is 4365, what is 65% of the number?
Option 1: 36,375
Option 2: 53,280
Option 3: 34,047
Option 4: 52,380
Correct Answer: 34,047
Solution : Let the number be $n$. According to the question, $\frac{4}{5} \times \frac{5}{6} \times \frac{1}{8} \times n = 4365$ $⇒\frac{1}{12} \times n = 4365$ $⇒n = 4365 \times 12 = 52380$ Now, 65% of $n = \frac{65}{100} \times 52380 = 34047$ Hence, the correct answer is
Question : The gas that causes suffocation and death when coal or coke is burnt in a closed room is
Option 1: Methane
Option 2: Ethane
Option 3: Carbon Monoxide
Option 4: Carbon Dioxide
Correct Answer: Carbon Monoxide
Solution : The correct option is Carbon Monoxide.
Carbon Monoxide (CO) is the gas that can result from burning coal, or coke in a closed space. Colourless and odourless, carbon monoxide is created when fuels containing carbon, like coal or coke, burn incompletely. A buildup
Question : Directions: Out of the given letter clusters, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is different from the rest.
Option 1: EIO
Option 2: IOU
Option 3: EID
Option 4: AEI
Correct Answer: EID
Solution : Let's check the options –
First option: EIO→E, I, O; all are vowels Second option: IOU→I, O; U all are vowels Third option: EID→E, I, D; here D is not a vowel Fourth option: AEI→A, E, I; all are vowels
So, the third option is
Question :
Which of the following amphibians lacks tongue?
Option 1:
Sphenodon
Option 2:
Salamander
Option 3: Ichthyophis
Option 4: Necturus
Correct Answer: Ichthyophis
Solution : The correct option is - Ichthyophis
Tongue is absent in Ichthyophis. The limbless amphibian is frequently referred to as the Asian caecilians. The western Indo-Australian Archipelago, the Philippines, and Southeast Asia are all places where you ichthyophis can be found.
Question : $\mathrm{O}$ is the centre of a circle and $\mathrm{A}$ is a point on a major arc $\mathrm{BC}$ of the circle. $\angle \mathrm{BOC}$ and $\angle \mathrm{BAC}$ are the angles made by the minor arc $\mathrm{BC}$ on the centre and circumference, respectively. If $\angle \mathrm{ABO}=40^{\circ}$ and $\angle \mathrm{ACO}=30^{\circ}$, then find $\angle \mathrm{BOC}$.
Option 1: $130^{\circ}$
Option 2: $140^{\circ}$
Option 3: $120^{\circ}$
Option 4: $150^{\circ}$
Correct Answer: $140^{\circ}$
Solution :
Given: That $O$ is the centre of a circle and $A$ is a point on a major arc $BC$ of the circle. $\angle BOC$ and $\angle BAC$ are the angles made by the minor arc $BC$ on the centre and circumference, respectively. Also $\angle ABO=40^{\circ}$
Question : In triangle ABC, $\angle$ABC = 15°. D is a point on BC such that AD = BD. What is the measure of $\angle$ADC (in degrees)?
Option 1: 15
Option 2: 30
Option 3: 45
Option 4: 60
Correct Answer: 30
Solution : Given: In triangle ABC, $\angle$ABC = 15°. D is a point on BC such that AD = BD. Given that AD = BD. Then, $\angle$ABD = $\angle$BAD = 15° Now, in $\triangle$ABD ⇒ $\angle$ABD + $\angle$BAD + $\angle$ADB = 180° ⇒ $\angle$ADB = 180° –
Question : The average of 100 observations was calculated as 35. It was found later, that one of the observations was misread as 83 instead of 53. The correct average is:
Option 1: 32.7
Option 2: 34.7
Option 3: 35.7
Option 4: 36.7
Correct Answer: 34.7
Solution : Given: The average of the 100 observations = 35 So, the sum of 100 observations = 100 × 35 = 3500 The correct value is 53 and the incorrect value is 83. Difference = 83 – 53 = 30 So, the correct average = $\frac{3500–30}{100}$
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