Which error is detected during lexical

Cockroach : Nymph :: Stag : 

Select the most appropriate word for the given group of words.

A person skilled in cutting, dressing, and laying stone in buildings.

Select the most appropriate option to improve the bold segment in the given sentence.If there is no need to improvement it,select, no improvement.

Select the most appropriate option to fill in the blank.

The box was ______ heavy for that little child to carry.

The new Prime Minister will now have to build on his successor’s (A) / predecessor’s (B) success and address his failures.

Find the appropriate meaning of the underlined idiom.

Value education should be a part and parcel of any education system.

Select the most appropriate antonym of the given word.

ADAMANT

The new rules are supposed to enable farmers to sell their produce at remunerative (A) /remonstrative (B) prices.