Vectors Test - ...

Assertion The minimum number of non coplanar vectors whose sum can be zero, is four.
Reason The resultant of two vectors of unequal magnitude can be zero.

Assertion A null vector is a vector whose magnitude is zero and direction is arbitrary
Reason A null vector does not exist.

Assertion A physical quantity cannot be called as a vector if its magnitude is zero
Reason A vector has both, magnitude and direction.

Assertion The sum of two vectors can be zero.
Reason The vector cancel each other, when they are equal and opposite.

Assertion Two vectors are said to be like vectors if they have same direction but different magnitude.
Reason Vector quantities do not have specific direction.

Assertion The scalar product of two vectors can be zero.
Reason If two vectors are perpendicular to each other, their scalar product will be zero.