Mathematics FA Part 1 Online Test With Answers

Mathematics FA Part 1 Online Test

Sr. # Questions Answers Choice
1

6 g of hydrogen gas is.

<p>1 mole</p> <p>2 moles</p> <p>3 moles</p> <p>4 moles</p>
2

The correct order of first ionization engergies is.

<p>F&gt;He&gt;Mg&gt;N&gt;O</p> <p>He &gt;F&gt;N&gt;O&gt;Mg</p> <p>He &gt; O&gt; F &gt; N&gt; Mg</p> <p>N &gt; F&gt; He &gt;O &gt;Mg</p>
3 Sum of roots of ax2 + bx + c = 0 is equal to product of roots only if: a+c=0 b+c=0 a+b=0 a+b+c=0
4 Four fourth roots of 625 are: ±5,±5i ±5,±25i ±25,±25i none of these
5 none of these
6 4 16 8 64
7 1 0 2 3
8 i
9 If one root of 2x2 + ax + 6 = 0 is 2 then the value of a is: 7 -7
10 25 20 40 2a + 2b + 2c
11 If A is a square matrix order 3 × 3 the |kA| equals: k |A| k<sup>2</sup>|A| k<sup>3</sup> |A| k<sup>4</sup> |A|
12 For a square matrix A, |A| equals: A<sup>t</sup> |A<sup>t</sup>| -|A<sup>t</sup>| -A<sup>t</sup>
13 If A = [aij], B = [bij] and AB = 0 then: A = 0 B = 0 either A = 0 or B = 0 A &amp; B not necessarily zero
14 If A = [aij] and B = [bij] are two matrices of same order r × s, then order of A - B is: r - s r × s r + s none of these
15 S = {1, -1, 2, -2} is a group under: multiplication subtraction addition none of these
16 equal sets null sets overlapping sets subsets
17 A B
18 If sets A and B are equal then:
19 If W = {0, 1, 2, 3, 4, ........}, N = {1, 2, 3, 4 ...........} then N - W = ? W {0} none of these
20
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