Which of the following tools are used in soil analysis?
I. pH meter
II. Sieve
III. Hygrometer

A.

I and II

B.

I and III

C.

I, II and III

D.

II and III

Correct answer is C

All the tools listed are used in soil analysis. A pH meter is used to measure the acidity or alkalinity of the soil. A sieve is used to separate and grade soil and rock particles according to their size. A hygrometer is used to measure the moisture content in the atmosphere, which can affect soil moisture levels.