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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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Q.10351·Miscellaneous·2015·Easy

Only when you left I did sleep.

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Q.10352·Miscellaneous·2015·Easy

(P) from leadership in culture (Q) in military situations and in face-to-face small groups (R) leadership has wide range of expressions (S) to leadership in politics The proper sequence should be:

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Q.10353·Miscellaneous·2015·Easy

(P) glancing occasionally (Q) peering through the window (R) at the figure of the old woman (S) until he was chilled with the cold The proper sequence should be:

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Q.10354·Miscellaneous·2015·Easy

(P) shaking his fist at the sky (Q) clambering over the ruins (R) and collapsing with a howl of revolt (S) of his house and factory The proper sequence should be:

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Q.10355·Miscellaneous·2015·Easy

The area of the figure formed by the lines ax+by+c=0, ax-by+c=0, ax+by-c=0 and ax-by-c=0 is

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Q.10356·Miscellaneous·2015·Easy

If A = [1 1 -1; 2 -3 4; 3 -2 3] and B = [-1 -2 -1; 6 12 6; 5 10 5], then which of the following is/are correct ? 1. A and B commute. 2. AB is a null matrix. Select the correct answer using the code given below :

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Q.10357·Miscellaneous·2015·Easy

Consider the following : 1. sin⁻¹(4/5) + sin⁻¹(3/5) = π/2 2. tan⁻¹√3 + tan⁻¹1 = -tan⁻¹(2+√3) Which of the above is/are correct ?

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Q.10358·Miscellaneous·2015·Easy

The three lines 4x+4y=1, 8x-3y=2, y=0 are

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Q.10359·Miscellaneous·2015·Easy

The line 3x+4y-24=0 intersects the x-axis at A and y-axis at B. Then the circumcentre of the triangle OAB where O is the origin is

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Q.10360·Miscellaneous·2015·Easy

This is a matter I’d rather not talk about.

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Q.10361·Miscellaneous·2015·Easy

If a, b, c are real numbers, then the value of the determinant | -a -b -c b+c | | -b b -c a+c | | -c -a b a+b | is

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Q.10362·Miscellaneous·2015·Easy

The matrix A = [[1, 3, 2], [1, x-1, 1], [2, 7, x-3]] will have inverse for every real number x except for

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Q.10363·Miscellaneous·2015·Easy

A vertical tower standing on a levelled field is mounted with a vertical flag staff of length 3 m. From a point on the field, the angles of elevation of the bottom and tip of the flag staff are 30° and 45° respectively. Which one of the following gives the best approximation to the height of the tower ?

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Q.10364·Miscellaneous·2015·Easy

The average of the coefficients of the two middle terms in the expansion is

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Q.10365·Miscellaneous·2015·Easy

The number of 3-digit even numbers that can be formed from the digits 0, 1, 2, 3, 4 and 5, repetition of digits being not allowed, is

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Q.10366·Miscellaneous·2015·Easy

zz̄ + (3-i)z + (3+i)z̄ + 1 = 0 represents a circle with

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Q.10367·Miscellaneous·2015·Easy

The number of ways in which 3 holiday tickets can be given to 20 employees of an organization if each employee is eligible for any one or more of the tickets, is

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Q.10368·Miscellaneous·2015·Easy

sin A, sin B, sin C are in

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