Staff Selection Commission Multi Tasking Staff Exam
Question : Which among the following is a covalent compound?
Option 1: Hydrogen chloride
Option 2: Magnesium hydroxide
Option 3: Calcium carbonate
Option 4: Sodium chloride
Correct Answer: Hydrogen chloride
Solution : The correct answer is Hydrogen chloride.
Covalent compounds are made up of two or more nonmetallic elements. The bond between hydrogen and chlorine in Hydrogen chloride is covalent because both hydrogen and chlorine are non-metals. Atoms share valence electrons in these kinds of
Question : If $p: q$ is $4: 3$ and $q: r$ is $5 : 2$. Find $p: q: r$.
Option 1: 20 : 15 : 6
Option 2: 10 : 4 : 7
Option 3: 15 : 6 : 20
Option 4: 7 : 4 : 10
Correct Answer: 20 : 15 : 6
Solution : Given: $p: q$ is $4: 3$ and $q: r$ is $5 : 2$ $p:q=4:3=(4×5):(3×5)=20:15$ $q:r=5:2=(5×3):(2×3)=15:6$ So, $p:q:r=20:15:6$ Hence, the correct answer is 20 : 15 : 6.
Question : In an examination, 1100 boys and 900 girls appeared. 50% of the boys and 40% of the girls passed the examination. The percentage of candidates who failed:
Option 1: 45%
Option 2: 45.5%
Option 3: 50%
Option 4: 54.5%
Correct Answer: 54.5%
Solution : Given: Total students = 1100 boys + 900 girls Total boys passed = 1100 × $\frac{50}{100}$ = 550 Total girls passed = 900 × $\frac{40}{100}$ = 360 Total students who pass = 550 + 360 = 910 Failed students = 2000 – 910 = 1090
Question : Which among the following books released in 2021 was written by Amartya Sen?
Option 1: Will
Option 2: It's a Wonderful Life
Option 3: Home in the World
Option 4: Skill It, Kill It
Correct Answer: Home in the World
Solution : The correct option is Home in the World.
Home in the World is written by Amartya Sen. It was published in July 2021 by Penguin Random House. Amartya Sen was awarded the Nobel Prize in Economic Sciences in 1998 for his contributions
Question : Select the most appropriate ANTONYM of the given word. Blissful
Option 1: Idealised
Option 2: Malicious
Option 3: Miserable
Option 4: Heavenly
Correct Answer: Miserable
Solution : The third option is the correct answer.
"Blissful" describes a state of extreme happiness, joy, or contentment, suggesting a feeling of utter satisfaction and well-being. Conversely, "miserable" is the opposite, describing a state of extreme unhappiness, suffering, or discomfort, implying a lack of joy or
Question : Directions: What will be the value of the following expression, if + and × are interchanged and − and ÷ are interchanged? 9 + 2 ÷ 5 × 4 − 2 = ?
Option 1: 4
Option 2: 12
Option 3: 3
Option 4: 15
Correct Answer: 15
Solution : Given: 9 + 2 ÷ 5 × 4 − 2 = ?
On interchanging the mathematical signs, we get – = 9 × 2 – 5 + 4 ÷ 2 = 9 × 2 – 5 + 2 = 18 – 5 + 2 =
Question : Indian economy is seen growing at_____ per cent in the 2021-22 fiscal, finance minister Nirmala Sitharaman said while presenting the Union Budget 2022.
Option 1: 6.5
Option 2: 7.4
Option 3: 5.3
Option 4: 9.2
Correct Answer: 9.2
Solution : The correct answer is 9.2.
Indian economy is seen growing at 9.2% in the current fiscal year, Finance Minister Nirmala Sitharaman said while presenting the Union Budget. Article 112 of the Constitution requires the government to present to Parliament a statement of estimated receipts and
Question : Directions: What will be the value of the given expression if A means +, B means –, C means ×, and D means ÷? 25 B 35 A 12 C 25 D 5 = ?
Option 1: 45
Option 2: 50
Option 3: 55
Option 4: 40
Correct Answer: 50
Solution : Given: 25 B 35 A 12 C 25 D 5 = ?
On replacing the alphabet with mathematical signs, we get – = 25 – 35 + 12 × 25 ÷ 5 = 25 – 35 + 12 × 5 = 25 – 35 +
Question : A certain sum of money amounts to 3 times itself in 13 years when interest is compounded annually at a certain interest rate per annum. In how many years will the initial sum amount to 9 times itself at the same interest rate per annum, also compounded annually?
Option 1: 32 years
Option 2: 26 years
Option 3: 30 years
Option 4: 20 years
Correct Answer: 26 years
Solution : Given: A certain sum of money amounts to 3 times itself in 13 years when interest is compounded annually at a certain interest rate per annum. Use the formula, $A=P[1+\frac{R}{100}]^T$ where $A$, $P$, $R$ and $T$ are the amount, principal, rate, and number of
Question : Directions: In a certain code language, NAMED is written as MBLFC. How will RAZOR be written in that language?
Option 1: QBYQP
Option 2: YQBPQ
Option 3: QYBPQ
Option 4: QBYPQ
Correct Answer: QBYPQ
Solution : Given: NAMED is written as MBLFC.
Subtract and add 1 alternately to the place values of the letters of the given word to obtain the required code. NAMED→N – 1; A + 1, M – 1; E + 1; D – 1 = MBLFC Similarly,
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