The following sentence has been split into four segments. Identify the segment that contains a grammatical error.

The students / and the teachers / worked hardly / to make the event a success.

A. and their teachers

B. worked hardly

C. The students

D. to make the event a success

The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don't find any error, mark 'No error' as your answer.

The availability of funds will be / ensured if they all tried to / submit the proposals on time.

1. The availability of funds will be

2. No error

3. submit the proposals on time

4. ensured if they all tried to

Select the most appropriate meaning of the given idiom.

To raise a dust

1. To meet one’s defeat

2. To be satisfied with what you have achieved

3. To be secretly or inwardly amused

4. To cause disruption or confusion

Choose the appropriate meaning of the idioms from the choice given:

To bite the dust

1. To give a very tough fight

2. Not to take sides

3. To be defeated

4. To eat anything to escape hunger

Select the most appropriate one word substitution.

A study of the conditions and structure of the earth

1. Biology

2. Meteorology

3. Geography

4. Geology

Select the most appropriate one word substitution.

Beliefs or incidents that happen in a way which cannot be explained by reason or science.

1. Science totems

2. Wonders

3. Superstitions

4. Marvels