Question

Given below are two statements:
Statement (I): Three types of adjuvants used with herbicides are activator, spray modifier and utility.
Statement (II): Activator adjuvants are a part of the formulation.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both Statement (I) and Statement (II) are correct.
• B. Both Statement (I) and Statement (II) are incorrect.
• C. Statement (I) is correct but Statement (II) is incorrect.
• D. Statement (I) is incorrect but Statement (II) is correct.

Hint:

Recall that adjuvants are usually grouped into just two categories, not three, and activator adjuvants are tank mix additions.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept.
Adjuvants are substances added to a herbicide spray mixture to improve how well it works or how well it can be applied, and they are grouped based on their role in the spray tank.

Step 2: Checking Statement I.
Standard weed science classification splits adjuvants into two broad groups, not three. Activator adjuvants, which include surfactants, crop oil concentrates, and nitrogen fertilizer additives, are meant to boost herbicide performance. The second group, called special purpose adjuvants or utility modifiers, covers compatibility agents, buffering agents, drift control agents, and defoaming agents that adjust the physical behaviour of the spray mixture. The terms spray modifier and utility both describe this same second group rather than two separate groups, so calling them three distinct types is not correct, making Statement I false.

Step 3: Checking Statement II.
Activator adjuvants such as surfactants, oils, and nitrogen fertilizers are usually added separately to the spray tank by the person applying the herbicide, rather than being built into the manufactured herbicide formulation itself. Since Statement II claims they are part of the formulation, this statement does not hold either, so it is false.

Step 4: Final Answer.
Both statements are incorrect, so option 2 is correct. Some study material can phrase adjuvant categories a little differently, so this answer follows the two group classification that is most widely taught.