Board Paper of Class 12-Science 2023 Math Delhi(Set 2) - Solutions
General Instructions:
Read the following instructions very carefully and follow them:
(i) This question paper contains 38 questions. All questions are compulsory.
(ii) Question paper is divided into FIVE Sections-Section A, B, C, D and E.
(ii) In Section A - Question Number 1 to 18 are Multiple Choice Questions (MCQ) type and Question Number 19 & 20 are Assertion-Reason based questions of 1 mark each.
(iv) In Section B - Question Number 21 to 25 are Very Short Answer (VSA) type questions of 2 marks each.
(v) In Section C - Question Number 26 to 31 are Short Answer (SA) type questions, carrying 3 marks each.
(vi) In Section D - Question Number 32 to 35 are Long Answer (LA) type questions carrying 5 marks each.
(vii) In Section E - Question Number 36 to 38 are case study based questions carrying 4 marks each where 2 VSA type questions are of 1 mark each and 1 SA type question is of 2 marks. Internal choice is provided in 2 marks question in each case-study.
(viii) There is no overall choice. However, an internal choice has been provided in 2 questions in Section B - 3 questions in Section C, 2 questions in
Section-D and 2 questions in Section - E.
(ix) Use of calculators is NOT allowed.
- Question 1
- Question 2
- Question 3
- Question 4
- Question 5
- Question 6
The function f(x) = [x], where [x] denotes the greatest integer less than or equal to x, is continuous at
(a) x = 1
(b) x = 1.5
(c) x = −2
(d) x = 4 VIEW SOLUTION
- Question 7
The derivative of x2x w.r.t. x is
(a) x2x −1
(b) 2x2x log x
(c) 2x2x(1 + log x)
(d) 2x2x(1 − log x) VIEW SOLUTION
- Question 8
The interval in which the function f(x) = 2x3 + 9x2 + 12x − 1 is decreasing, is
(a)
(b)
(c)
(d) VIEW SOLUTION
- Question 9
The function f(x) = x | x |, x ϵ R is differentiable
(a) only at x = 0
(b) only at x = 1
(c) in R
(d) in R − {0} VIEW SOLUTION
- Question 10
equals
(a) sec x − tan x + c
(b) sec x + tan x + c
(c) tan x − sec x + c
(d) −(sec x + tan x) + c VIEW SOLUTION
- Question 11
- Question 12
The sum of the order and the degree of the differential equation is
(a) 2
(b) 3
(c) 5
(d) 0 VIEW SOLUTION
- Question 13
- Question 14
A unit vector makes equal but acute angles on the co-ordinates axes. The projection of the vector on the vector is
(a)
(b)
(c)
(d) VIEW SOLUTION
- Question 15
The angle between the lines 2x = 3y = −z and 6x = −y = −4z is
(a) 0°
(b) 30°
(c) 45°
(d) 90° VIEW SOLUTION
- Question 16
If a line makes angles of 90°, 135° and 45° with the x, y and z axes respectively, then its direction cosines are
(a)
(b)
(c)
(d) VIEW SOLUTION
- Question 17
If for any two events A and B, P(A) and P(A ∩ B), then P(B/A) is equal to
(a)
(b)
(c)
(d) VIEW SOLUTION
- Question 18
If A and B are two independent events such that P(A) = and P(B) = then is
(a)
(b)
(c)
(d) 1 VIEW SOLUTION
- Question 19
Assertion (A):
Reason (R):
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
(b) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(c) (A) is true and (R) is false.
(d) (A) is false, but (R) is true. VIEW SOLUTION
- Question 20
Assertion (A): Two coins are tossed simultaneously. The probability of getting two heads, if it is known that at least one head comes up, is .
Reason (R): Let E and F be two events with a random experiment, then
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
(b) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(c) (A) is true and (R) is false.
(d) (A) is false, but (R) is true. VIEW SOLUTION
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Board Paper of Class 12-Science 2019 Math Abroad(Set 3) - Solutions
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Board Paper of Class 12-Science 2018 Maths Delhi(SET 1) - Solutions
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Board Paper of Class 12-Science 2018 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2018 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2018 Maths - Solutions
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Board Paper of Class 12-Science 2018 Maths - Solutions
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Board Paper of Class 12-Science 2017 Maths Delhi(SET 1) - Solutions
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Board Paper of Class 12-Science 2017 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2017 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2017 Maths All India(SET 1) - Solutions
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Board Paper of Class 12-Science 2017 Maths All India(SET 3) - Solutions
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Board Paper of Class 12-Science 2017 Maths Abroad(SET 3) - Solutions
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Board Paper of Class 12-Science 2016 Maths Delhi(SET 1) - Solutions
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Board Paper of Class 12-Science 2016 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2016 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2016 Maths All India(SET 2) - Solutions
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Board Paper of Class 12-Science 2016 Maths Abroad(SET 2) - Solutions
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Board Paper of Class 12-Science 2015 Maths Delhi(SET 1) - Solutions
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Board Paper of Class 12-Science 2015 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2015 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2015 Maths All India(SET 2) - Solutions
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Board Paper of Class 12-Science 2015 Maths Abroad(SET 2) - Solutions
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Board Paper of Class 12-Science 2014 Maths Delhi(SET 1) - Solutions
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Board Paper of Class 12-Science 2014 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2014 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2014 Maths All India(SET 1) - Solutions
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Board Paper of Class 12-Science 2014 Maths Abroad(SET 1) - Solutions
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Board Paper of Class 12-Science 2013 Maths Delhi(SET 1) - Solutions
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Board Paper of Class 12-Science 2013 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2013 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2013 Maths All India(SET 1) - Solutions
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Board Paper of Class 12-Science 2013 Maths All India(SET 2) - Solutions
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Board Paper of Class 12-Science 2012 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2012 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2012 Maths All India(SET 3) - Solutions
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Board Paper of Class 12-Science 2011 Maths Delhi(SET 1) - Solutions
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Board Paper of Class 12-Science 2011 Maths Abroad(SET 2) - Solutions
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Board Paper of Class 12-Science 2011 Maths Delhi(SET 3) - Solutions
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Board Paper of Class 12-Science 2010 Maths Delhi(SET 2) - Solutions
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Board Paper of Class 12-Science 2010 Maths All India(SET 2) - Solutions
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Board Paper of Class 12-Science 2005 Maths All India(SET 1) - Solutions
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