What type of noun the word ' chemistry' is

Past continuous যুক্ত বাক্যের passive structure হল obj কে sub +was/were + being +verb এর p.p + by +sub কে obj .
The wounded man was being helped by some children .

Direct Speech-টি Interrogative Sentence এবং Auxiliary verb (Are) দিয়ে শুরু হওয়ায় Inverted comma উঠে conjunction হিসেবে if বা whether বসবে।
Person পরিবর্তন: Reported speech-এর Subject 'you' (Second person) Reporting verb-এর Object 'me' অনুযায়ী পরিবর্তিত হয়ে 'I' হবে।
Tense পরিবর্তন: Reporting verb Past Tense-এ থাকায় Present Tense (are) পরিবর্তিত হয়ে Past Tense (was) হবে।
Sentence-টি Interrogative থেকে Assertive form-এ রূপান্তরিত হবে, অর্থাৎ Subject-এর পরে Verb বসবে।

The most prominent modern philosopher to win the Nobel Prize for Literature is the British philosopher and mathematician Bertrand Russell, who received the award in 1950. Other notable philosophical figures recognized include the French existentialists Albert Camus (1957) and Jean-Paul Sartre.

A rolling stone gathers no moss. what 'rolling' is participle. 

Singular =  Formula,Datum,

Plural = Formulae, Data,

Correct: He is as good as I