Staff Selection Commission Combined Graduate Level Exam
Question : An electric current is expressed by a unit called:
Option 1: Metre
Option 2: Ampere
Option 3: Watt
Option 4: Joule
Correct Answer: Ampere
Solution : The correct answer is Ampere.
The unit used to express an electric current is the Ampere or A. It bears the name André-Marie Ampère in honour of the French physicist who made advancements in the study of electromagnetics.
Question : Comprehension: In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.
Human activities are changing Earth's natural greenhouse 1. _________. Burning fossil fuels like coal and oil puts 2. _________carbon dioxide into our atmosphere. NASA has 3.__________increase in the amount of carbon dioxide and some other greenhouse gases in 4. ___________atmosphere. Too much of these greenhouse gases can 5. __________Earth's atmosphere to trap more and more heat. This causes Earth to warm up.
Question: Select the most appropriate option to fill in the blank No. 2.
Option 1: much
Option 2: more
Option 3: many
Option 4: most
Correct Answer: more
Solution : The second option is correct.
Explanation:
In this sentence, burning fossil fuels like coal and oil refers to activities that release substances into the atmosphere. Carbon dioxide is a gas released by these activities. Here, more would be used to indicate a larger quantity
Question : Comprehension:
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
The child is the father of the man. Childhood is a (1)______ of what one is going to be when one (2)______ maturity. The natural instincts of a man are (3)______ in his childhood. Time modifies them but cannot (4)______ them. History contains numerous examples of great men who gave (5)______ of their future when they were children. A child’s mind is (6)______ and flexible. The mould he receives before his clay (7)______ becomes his permanent mark. The values and standards of (8)______ which will determine his life as a man (9)______ in childhood itself. There may be certain (10)______ of course. A bright morning may end in a storm!
Question:
Select the most appropriate option to fill in the blank no. 5.
Option 1: preparations
Option 2: indications
Option 3: suggestions
Option 4: estimations
Correct Answer: indications
Solution : The correct choice is the second option.
The word indication means a hint or a signal. It helps convey the intended meaning that the actions or characteristics exhibited by the great men during their childhood provided a clear sign or indication of what their
Question : Choose the correct set of names for the organic compounds in the given figure.
Option 1: a: Furan, b: Toluene, c: Pyridine
Option 2: a: Furan, b: Pyridine, c: Thiophene
Option 3: a: Furan, b: Thiophene, c: Aniline
Option 4: a: Anisole, b: Thiophene, c: Pyridine
Correct Answer: a: Furan, b: Pyridine, c: Thiophene
Solution : The correct option is a: Furan, b: Pyridine, c: Thiophene.
Furan is a heterocyclic compound with a five-membered ring consisting of four carbon atoms and one oxygen atom. Its molecular formula is C4H4O. Pyridine is a
Question : Directions: Select the related letter cluster from the given alternatives. LNPQ : ACEF :: TVXY : ?
Option 1: IMKL
Option 2: IKMO
Option 3: IKMN
Option 4: PKLR
Correct Answer: IKMN
Solution : Given: LNPQ : ACEF :: TVXY : ?
Here, subtract 11 from the place value of each letter of LNPQ to obtain the required code – L – 11 = A; N – 11 = C; P – 11 = E; Q – 11 =
Question : Who is the major driving force behind the 'Narmada Bachao Andolan'?
Option 1: Anna Hazare
Option 2: Medha Patkar
Option 3: Shantha Sinha
Option 4: Manasi Pradhan
Correct Answer: Medha Patkar
Solution : The correct option is Medha Patkar.
The Narmada Bachao Andolan is primarily driven by Medha Patkar. She is an Indian social activist well known for her efforts in the areas of social justice and the environment. It is a social movement that was formed
Question : Directions: A watch company produces four different products. The sale of these products in lakhs during 2005 and 2010 is shown in the following bar diagram. Study the graph and answer the question.
The sales have increased by nearly 135% from 2005 to 2010 in the product of:
Option 1: Table clock
Option 2: Wristwatch
Option 3: Stopwatch
Option 4: Wall clock
Correct Answer: Table clock
Solution : As per the graph, (i) Wristwatch The sales in 2010 = 28.3 lakhs The sales in 2005 = 21.3 lakhs Percentage increase = $\frac{28.3-21.3}{21.3}$ × 100 = 32.86% (ii) Stopwatch The sales in 2010 = 3.5 lakhs The sales in 2005 = 5.5 lakhs
Question : If $(x+\frac{1}{x})=–2$, then the value of $(x^7+\frac{1}{x^7})$ is:
Option 1: 1
Option 2: –1
Option 3: 0
Option 4: –2
Correct Answer: –2
Solution : Given: $(x+\frac{1}{x})=–2$ ⇒ $(x+\frac{1}{x})^2=(–2)^2$ ⇒ $x^2+\frac{1}{x^2}+2=4$ ⇒ $x^2+\frac{1}{x^2}=2$ So, $(x^4+\frac{1}{x^4})=(x^2+\frac{1}{x^2})^2-2=2^2-2$ ⇒ $(x^4+\frac{1}{x^4})=4-2$ ⇒ $(x^4+\frac{1}{x^4})=2$ Also, $(x^3+\frac{1}{x^3})=(x+\frac{1}{x})^3-3(x+\frac{1}{x})=(–2)^3–3×–2$ ⇒ $(x^3+\frac{1}{x^3})=–8+6$ ⇒ $(x^3+\frac{1}{x^3})=–2$ So, $(x^7+\frac{1}{x^7})= [x^3+\frac{1}{x^3}][x^4+\frac{1}{x^4}]–[x+\frac{1}{x}]=-2×2-(-2)=-2$ Hence, the correct answer is –2.
Question : Which of the following cities of India was a coastal settlement where ships unloaded goods from distant lands between 2200 and 1900 years ago?
Option 1: Karaikal
Option 2: Veerampattinam
Option 3: Yanam
Option 4: Arikamedu
Correct Answer: Arikamedu
Solution : The correct answer is Arikamedu.
Arikamedu, a coastal settlement in Puducherry, India, is a place where ships unloaded goods from distant lands between 2200 and 1900 years ago. A massive structure of brick warehouses is found at this place to store the goods.
Question : The numbers of students in different classes of a school are shown in the following bar graph. The maximum difference in the numbers of students in any two classes is what percentage of the number of students in Class 7 (correct to two decimal places)?
Option 1: 39.71%
Option 2: 34.29%
Option 3: 33.48%
Option 4: 36.48%
Correct Answer: 39.71%
Solution : The maximum difference is between the highest and lowest numbers of students $=68 - 41 = 27$ Number of students in Class 7 $= 68$ $\therefore$ The maximum difference as a percentage of the number of students in Class 7 $=\frac{27}{68} \times 100 = 39.71\%$
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