Staff Selection Commission Multi Tasking Staff Exam
Question : Starch in potatoes reacts with _____, turning to a blue colour.
Option 1: fluorine
Option 2: bromine
Option 3: iodine
Option 4: chlorine
Correct Answer: iodine
Solution : The correct option is iodine.
The starch in potatoes reacts with iodine, turning to a blue-black colour. This reaction is commonly used in science experiments and is known as the iodine test for starch. When iodine comes in contact with starch, it forms a
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.
In Andhra Pradesh, low rainfall and increased (1) ______ on borewells have led to soil aridity, while (2) ______ snow and more rainfall has (3) ______ the desertification crisis in Himachal Pradesh. On the other (4) ______, in Rajasthan, canals, tube-well irrigation and shelterbelts have (5) ______ to an increase in the green cover.
Question:
Select the most appropriate option to fill in the blank number 5.
Option 1: lead
Option 2: led
Option 3: leading
Option 4: leads
Correct Answer: led
Solution : The correct choice is the second option.
The sentence structure in the passage indicates that it discusses actions that have already occurred in the past. The past tense of the verb lead is led, making it the correct choice to maintain the consistency of
Question : Directions: Select the option in which the given figure is embedded as its part (rotation is NOT allowed).
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : Since the rotation is restricted. So, the embedded figure will have the same orientation as the main figure. By comparison of the question figure with all the option figures, it is evident that the given question figure is embedded only in the second option figure.
Hence,
Question : According to Census 2011, which of the following is not included in the top ten most populous countries?
Option 1: Pakistan
Option 2: Japan
Option 3: Nigeria
Option 4: Canada
Correct Answer: Canada
Solution : The correct option is Canada.
The 2011 Census shows Canada is not included in the top ten populous countries. Canada is the second-largest country in land area but still has a small population due to its harsh climate. It is located on the North American
Question : Meteorology is the science of:
Option 1: Weather
Option 2: Meteors
Option 3: Metals
Option 4: Earthquakes
Correct Answer: Weather
Solution : The correct answer is the weather.
Meteorology is a branch of the atmospheric sciences with a major focus on weather forecasting. It also includes atmospheric chemistry and atmospheric physics. A person who studies the weather is called a meteorologist.
Question : What is the compound interest on Rs. 20000 at 10% per annum for 1 year 6 months, compounded half-yearly?
Option 1: Rs. 3215.5
Option 2: Rs. 3200
Option 3: Rs. 3152.5
Option 4: Rs. 3300
Correct Answer: Rs. 3152.5
Solution : Principal = Rs. 20000 Rate = 10% yearly, $\frac{R}{2}$ = 5% compounded half yearly Time = 1 year 6 months compounded half yearly = 3 times We know that, $ A= P(1+\frac{\frac{R}{2}}{100})^{T}$ ⇒ $ A= 20000(1+\frac{5}{100})^{3}$ ⇒ $ A= 20000(\frac{105}{100})^{3}$ ⇒ $ A= 20000\times\frac{21}{20}\times\frac{21}{20}\times\frac{21}{20}$
Question : Parts of the following sentence have been given as options. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.
Sometimes we interact to people who are closed-minded and not willing to listen.
Option 1: to people who are closed-minded
Option 2: and not willing to listen
Option 3: sometimes we interact
Option 4: no error
Correct Answer: to people who are closed-minded
Solution : The correct option will be the first option.
The error lies in the preposition to after interact. The correct preposition in this context is with.
Therefore, the corrected sentence uses interact with people, which is the standard and grammatically correct
Question : $\frac{2}{7}$ of $40$% of B = 48. What is the value of B?
Option 1: 400
Option 2: 380
Option 3: 360
Option 4: 420
Correct Answer: 420
Solution : $\frac{2}{7}$ of $40$% of B = 48 ⇒ $\frac{2}{7} × \frac{40}{100}$ × B = 48 ⇒ B = $\frac{48×7×100}{2×40}$ = 420 Hence, the correct answer is 420.
Question : The protein part of the enzyme is known as
Option 1: Isoenzyme
Option 2: Holoenzyme
Option 3: Apoenzyme
Option 4: All the above
Correct Answer: Apoenzyme
Solution : The answer is Apoenzyme.
An Apoenzyme is the protein component of an enzyme. The need for a non-protein cofactor makes the enzyme active in its inactive state. A metal ion, a tiny chemical molecule, or another protein can serve as a cofactor. The Apoenzyme and
Question : Pattadakal dance festival is organised in which state of India?
Option 1: Assam
Option 2: Manipur
Option 3: Karnataka
Option 4: Jharkhand
Correct Answer: Karnataka
Solution : The correct answer is Karnataka.
The little village of Pattadakal, in the southern Indian state of Karnataka, hosts the annual Pattadakal Dance Festival. Dance performances take place against the backdrop of the renowned Pattadakal temples. Built in the seventh and eighth centuries, UNESCO has
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