Questions

Which of the following is an amphoteric oxide?

Which of the following is called Aurum?

Which one of the following oxides of Nitrogen is also known as Laughing Gas?

The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question,
choose the correct alternative and click the button corresponding to it.
I have been _____ this problem since noon.

Read the sentence to find out whether there is any error in it. The error, if any, will be in one part of the sentence. The number corresponding to that part will be your answer. If the given sentence is correct as it is, mark the answer as No error. Ignore the errors of punctuation if any.

The teacher instructed the students (A) to have a thoroughly reading (B) of each chapter (C) mentioned in the syllabus. (D)A.

In animals like Annelids, Molluscs, organs have associated to form functional systems, each system concerned with a specific physiological function. This pattern is called ________ system level of organization.

Select the option that correctly matches the contents of the first column with the contents of the second column.

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

A case in point is Sydney, Australia, where last year more than 8,000 pedestrians (is fined) for illegally crossing city streets.