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Prelims

UPSC Prelims Questions

Practice UPSC Prelims MCQs by subject and year. Free questions with explanations for focused revision.

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  2. /Prelims Questions
Q.2053·Miscellaneous·2023·Easy

Which one among the following districts of Eastern India held a referendum in 1947 to decide whether or not to join Pakistan ?

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Q.2054·Miscellaneous·2023·Easy

Let f(x) = | cos x x^2 2x | | 2sin x x 1 | | tan x x 1 | What is f'(0) equal to?

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Q.2055·Miscellaneous·2023·Easy

Let I1=∫0π x/1 + cos^2x dx and I2=∫0π 1/1 +sin^2x dx What is the value of I2?

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Q.2056·Miscellaneous·2023·Easy

Let I = ∫a to b (|x| / x) dx, a < b. What is I equal to when a < 0 < b?

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Q.2057·Miscellaneous·2023·Easy

Let I = ∫a to b (|x| / x) dx, a < b What is I equal to when a < b < 0?

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Q.2058·Miscellaneous·2023·Easy

Let f(x) = |ln x|, x ≠ 1. What is the derivative of f(x) at x = 0.5?

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Q.2059·Miscellaneous·2023·Easy

For manufacturing of glass, which among the following is used as a source of silica ?

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Q.2060·Miscellaneous·2023·Easy

Suppose E is the differential equation representing family of curves y^2 = 2cx + 2c√c where c is a positive parameter. What is the order of the differential equation?

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Q.2061·Miscellaneous·2023·Easy

Let f(x) = P e^x + Q e^2x + R e^3x where P, Q, R are real numbers. Further f(0) = 6, f'(n/3) = 282 and ∫₀^(n/2) f(x) dx = 11 What is the value of R?

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Q.2062·Miscellaneous·2023·Easy

Let f(x) = P e^x + Q e^2x + R e^3x where P, Q, R are real numbers. Further f(0) = 6, f'(n/3) = 282 and ∫₀^(n/2) f(x) dx = 11 What is f'(0) equal to?

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Q.2063·Miscellaneous·2023·Easy

Which among the following statements is not correct with respect to allotropes of Carbon ?

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Q.2064·Miscellaneous·2023·Easy

According to Koppen’s climatic classifications, the Great Northern Plains of India have which one of the following climates ?

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Q.2065·Miscellaneous·2023·Easy

Which among the following is the popular method for manufacture of ammonia ?

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Q.2066·Miscellaneous·2023·Easy

Which among the following is the correct arrangement of halogens in the increasing order of their oxidizing nature ?

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Q.2067·Miscellaneous·2023·Easy

Suppose E is the differential equation representing family of curves y^2 = 2cx + 2c√c where c is a positive parameter. What is the degree of the differential equation?

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Q.2068·Miscellaneous·2023·Easy

Which one of the following is not a characteristic feature of fungi ?

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Q.2069·Miscellaneous·2023·Easy

Which one of the following statements about bryophytes is not correct ?

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Q.2070·Miscellaneous·2023·Easy

During a laboratory experiment, a student immerses epidermal leaf peel in a hypertonic solution. After some time, the student examined the cells under a microscope and observed that :

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