Explanation

"Junior" is an adjective that describes someone as being younger or of lower status.

When using "junior" in a comparison, you use "to" instead of "than".

"By" is used to indicate the age difference (e.g., by four years). 

Explanation

A perfect square is a number that is the square of an integer.

Among the options:

√625 = 25

√289 = 17

√441 = 21

√325 ≈ 18.03 → Not an integer

Explanation

"Any" is an indefinite adjective here, as it refers to an unspecified or unknown person.

It is used in questions and negatives to indicate uncertainty or non-specificity.

Explanation

Wilhelm Wundt, known as the father of experimental psychology.

He was also explored Volkerpsychologie (Ethnic or Cultural Psychology).

He emphasized the complementary role of experimental psychology (lab-based) and ethnic psychology (cross-cultural, language, myths) in understanding human behavior.

Explanation

According to BODMAS, Division (÷) and Multiplication (×) are done first — from left to right, followed by Addition (+) and Subtraction (-).

So, if division appears before multiplication in the expression, it is done first.

Explanation

Fermentation is an anaerobic process where organisms like yeast or bacteria convert sugars into acid or alcohol, releasing energy.

It does not produce glucose, and it can occur in many cells, not just muscles.

Explanation

“Man” becomes “men” and “this” changes to “these” in plural.

The verb “is” also changes to “are” for plural subjects.

Explanation

Present continuous tense in active becomes "is/are being + past participle" in passive.

“Are baking” becomes “are being baked.”

Explanation

The present perfect tense (has + past participle) needs "sewn" (past participle of "sew").

"She has sewn her dress" is grammatically correct.

Explanation

= 18 × 1/6

= 3