ECAT Pre Engineering MCQ Test With Answer for Chapter 1 Mathematics

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  A
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  B
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  C
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  D

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  A
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  B
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  C
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  D

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  A
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  B
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  C
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  D

Multiplicative inverse of "1" is

• 0 A
• ±1 B
• 1 C
• {0,1} D

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  A
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  B
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  C
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  D

A non-terminating non_recurring decimal represents an

• Irrational no A
• Both a & c B
• Rational no C
• None of these D

The set of positive integers, 0 and negative integers is known as the set of

• Natural numbers A
• Rational numbers B
• All integers C
• Irrational numbers D

24 can be written as a product of

• Odd factors A
• Even factors B
• Whole factors C
• Prime factors D

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  A
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  B
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  C
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  D

i^-(4n+2) = -------------------------------

• 1 A
• i B
• -1 C
• -i D

√23 is

• A rational number A
• A irrational number B
• An even integer C
• A factor of 36 D

Multiplicative inverse of 0 is

• 0 A
• 1 B
• ±1 C
• Does not exist D

If 0 = R, thenthe additive inverse of a is

• 1/9 A
• ^1/-9 B
• a C
• -a D

If in a set of real no a is additive identity then

• a+a = 2a A
• a+a = 1 B
• a+a = 0 C
• None of these D

If z = (x,y) , then  z ̅  =

• (-x,y) A
• (x,-y) B
• (-x, -y) C
• None of these D

3/2 is

• An irrational number A
• Whole number B
• A positive integer C
• A rational number D

Such fraction which can not be written in the form ofp⁄q where p,q and q≠ 0,such fractions are called.

• Fractinal numbers A
• Rational Numbers B
• Even Numbers C
• Whole Numbers D

(a,0) x (c,0) =

• (0,ac) A
• (ac,0) B
• (0,0) C
• (a,c) D

• additive property A
• multiplicative property B
• additive identity C
• multiplicative identity D

• Trichotomy property A
• Additive property of inequality B
• Transitive property C
• Multiplicative property D

If Z = (1,2), then Z^-1 =?

• (0.2, 0.4) A
• (-0.2 ,0.4) B
• (0.2,-0.4) C
• (-0.2,-0.4) D

The additive inverse of 2/3 is

• 3/2 A
• -2/3 B
• -3/2 C
• 0 D

i =

• √1 A
• √2 B
• √-2 C
• √-1 D

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  A
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  B
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  C
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  D

If 4 > b or a < b than a = b is a

• Additive property A
• Transitive property B
• Trichotomy property of inequality C
• None of above D

a >b, b >c ⇒a >c is a

• Multiplicative property A
• Additive property B
• Trichotomy property C
• Transitive property of inequality D

If z₁ =√-36 ,z₂ =√-25,z3 =√-16 then

• 15 A
• 15i B
• -15i C
• -15 D

• real part of z A
• imaginary part of z B
• conjugate of z C
• modulus of z D

The value of i⁴ⁿ⁺¹

• 1 A
• -1 B
• i C
• i² D

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  A
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  B
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  C
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  D