ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 23 (Conic Section)

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ECAT Mathematics Chapter 23 Important MCQ's

Sr.#	Question	Answer
1	The magnitude of vector a=i-3j+5k is:	A. 3 B. √35 C. √17 D. √35
2	The modulus of 12-5i is:	A. 7 B. 13 C. √7 D. 119
3	If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =	A. -i -15j B. i-15j C. i-3j D. None of these
4	Vector i =	A. [1,0] B. [0,1,0] C. [0,0,1] D. None of these
5	a ______quantity is one that possesses both magnitude and direction.	A. Scalar B. Vector C. Segment D. None of these
6	If a≠ , b≠ 0 and|a=b|=|a-b|,then vectors a and b are:	A. Parallel to each other B. Perpendicular to each other C. Inclined at 60o D. neither parallel nor perpendicular
7	If m and n be two scalars, then (m+n) g =	A. 0 B. m+n C. m▁a+n▁a D. ma - m▁a
8	The vector k = [0,0,1] is called unit vector along:	A. x -axis B. y - axis C. z- axis D. None of these
9	I f a =5i + 2j, then|a| =	A. √13 B. √7 C. 1/√13 D. √29
10	If aand bare two vectors then a+b =	A. b + a B. b - a C. ab D. a^ b