Q.  Identify the clauses and point it whether it is a Noun Clause, Adjective Clause, Adverb Clause.

a) The bankers need to know what they should do.
Ans. what they should do-Noun Clause

b) The books, which are lost, are not really necessary.
Ans. which are lost-Adjective Clause

c) Whether you like it or not, you have to go to bed now.
Ans. Whether you like it or not-Adverb Clause

d) Students who are intelligent get good grades.
Ans. who are intelligent-Adjective Clause

e) No one knows he is.
Ans. who he is-Noun Clause  

f) When I was younger, I thought so.
Ans. when I was younger-Adverb Clause

g) He laughs best who laughs last.
Ans. who laughs last-Adjective Clause

h) I went to see what had happened.
Ans. what had happened-Noun Clause

i) He met a girl whose eyes were blue.
Ans. whose eyes were blue-Adjective Clause

j) I shall remain where I am.
Ans. where I am-Adverb Clause