Which is not true for a scalar quantity
It has only numerical value
Negative sign indicate the opposite direction of physical quantity
Length and work are examples of scalar quantity
It can be added or subtracted with the help of ordinary laws of addition and subtraction
As we have learned
Scalar Quantity -
Those quantities have magnitude only with no specific direction.
E.g., Distance, time, work, energy, etc
The negative sign indicates that the numerical value of the quantity under consideration is negative(opposite nature).
For eg Charge, Q = -2C is still a scalar quantity
work done has no direction on value so it is a scalar quantity, length of an object is also a scalar quantity”.
Option 1 and 4 are right ( properties of scalar quantity)
hence answer will be option 2.