Considering the alarming importance of CSAT in UPSC CSE Prelims exam and with enormous requests we received recently, InsightsIAS has started Daily CSAT Test to ensure students practice CSAT Questions on a daily basis. Regular Practice would help one overcome the fear of CSAT too.We are naming this initiative as Insta– DART – Daily Aptitude and Reasoning Test. We hope you will be able to use DART to hit bull’s eye in CSAT paper and comfortably score 100+ even in the most difficult question paper that UPSC can give you in CSP-2021. Your peace of mind after every step of this exam is very important for us.
Looking forward to your enthusiastic participation (both in sending us questions and solving them on daily basis on this portal).
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Question 1 of 5
1. Question
Length and breadth of rectangular field are in the ratio 5:2. If the perimeter of the field is 238 m. Find the length of the field.
Correct
Answer: A
Explanation
Perimeter of rectangle = 2(l+b)
Let length = 5x and Breath = 2x
So, 2(5x+2x) = 238; 14x =238;
x = 17;
Length = 17× 5 = 85m
Incorrect
Answer: A
Explanation
Perimeter of rectangle = 2(l+b)
Let length = 5x and Breath = 2x
So, 2(5x+2x) = 238; 14x =238;
x = 17;
Length = 17× 5 = 85m
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Question 2 of 5
2. Question
A cylindrical vessel with radius 6 cm and height 5 cm is to be made by melting a number of spherical metal balls of diameter 2 cm. The minimum number of balls needed is:
Correct
Answer: B
Explanation
Let the number of spherical metal balls = n
Volume of all spherical metal balls = Volume of cylindrical vessel
n * 4/3 π r3 = π r2h
n * 4/3 π (13) = π 62 *5
n=36*5*3/4 =>135
Incorrect
Answer: B
Explanation
Let the number of spherical metal balls = n
Volume of all spherical metal balls = Volume of cylindrical vessel
n * 4/3 π r3 = π r2h
n * 4/3 π (13) = π 62 *5
n=36*5*3/4 =>135
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Question 3 of 5
3. Question
Consider the following statements in the context of Methanotrophs and their applications
STATEMENT 1: Methanotrophs can grow in temperatures above 50°C.
STATEMENT 2: Methanotrophs convert methane to hydrogen gas.Which of the statements above is/are correct?
Correct
Solution: d)
STATEMENT 1: This statement is false. According to the information provided, Methylocucumis oryzae, the newly discovered methanotroph, has strict temperature requirements and cannot grow above 37°C. While some extremophile methanotrophs might exist that can tolerate higher temperatures, this particular species and many others typically have more moderate temperature ranges for growth.
STATEMENT 2: This statement is incorrect. Methanotrophs do not convert methane to hydrogen gas. Instead, they oxidize methane, converting it to CO₂ (carbon dioxide) and water. This process helps mitigate the effects of methane as a greenhouse gas by transforming it into less potent forms.
Incorrect
Solution: d)
STATEMENT 1: This statement is false. According to the information provided, Methylocucumis oryzae, the newly discovered methanotroph, has strict temperature requirements and cannot grow above 37°C. While some extremophile methanotrophs might exist that can tolerate higher temperatures, this particular species and many others typically have more moderate temperature ranges for growth.
STATEMENT 2: This statement is incorrect. Methanotrophs do not convert methane to hydrogen gas. Instead, they oxidize methane, converting it to CO₂ (carbon dioxide) and water. This process helps mitigate the effects of methane as a greenhouse gas by transforming it into less potent forms.
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Question 4 of 5
4. Question
The breadth of a rectangle is four times of its length. If the area of the rectangle is 1764, then what is the breadth of the rectangle?
Correct
Answer: C
Explanation
Length=x; breadth=4x;
Area = lb=4×2 = 1764;
x=21;
Breadth= 4x= 84
Incorrect
Answer: C
Explanation
Length=x; breadth=4x;
Area = lb=4×2 = 1764;
x=21;
Breadth= 4x= 84
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Question 5 of 5
5. Question
Consider the following statements:
- The CO2-to-methanol technology supports India’s commitment to achieving net-zero carbon emissions by 2030.
- Methanol produced from CO2 can be used in a wide range of industrial applications, including the chemical and energy sectors.
- The primary challenge in scaling up the CO2-to-methanol technology is the lack of CO2 availability from industrial sources in India.
How many of the above statements is/are correct?
Correct
Solution: a)
India has committed to achieving net-zero carbon emissions by 2070, not 2030 (Statement 1 is incorrect).
Methanol produced from CO2 can indeed be used in various industrial applications, including the chemical, energy, and transport sectors (Statement 2 is correct).
India’s challenge in scaling up CO2-to-methanol technologies is not due to a lack of CO2 availability but rather the cost and efficiency of capturing CO2 from industrial emissions (Statement 3 is incorrect).
Incorrect
Solution: a)
India has committed to achieving net-zero carbon emissions by 2070, not 2030 (Statement 1 is incorrect).
Methanol produced from CO2 can indeed be used in various industrial applications, including the chemical, energy, and transport sectors (Statement 2 is correct).
India’s challenge in scaling up CO2-to-methanol technologies is not due to a lack of CO2 availability but rather the cost and efficiency of capturing CO2 from industrial emissions (Statement 3 is incorrect).
