Question

Match the Column I (type of errors) with Column II (cause) and select the correct answer from the codes given below.

Column I		Column II
A	Instrumental errors	1	External conditions such as change in temperature, humidity, etc.
B	Imperfection in	2	Person's carelessness experimental technique
C	Personal errors	3	Either positive or negative in one direction.
D	Systematic errors	4	Imperfect design or calibration of the measuring instruments.

• A. $A - (4), B - (1), C - (2), D - (3)$
• B. $A - (4), B - (2), C - (3), D - (1)$
• C. $A - (2), B - (1), C - (4), D - (3)$
• D. $A - (4), B - (1), C - (3), D - (2)$

Answer 1

Answer: (A)

Correct answer is (a) $A - (4), B - (1), C - (2), D - (3)$