Questions

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.

The antigen-antibody immunological reaction is used to be regarded as typical of immunological responses. Antibodies are proteins synthesized by specialized cells called plasma cells, which are formed by lymphocytes (cells from the lymph system) when an antigen, a substance foreign to an organism's body, comes in contact with lymphocytes. Two important manifestations of antigen-antibody immunity are lysis, the rapid physical rupture of antigenic cells and the liberation of their contents into the surrounding medium, and phagocytosis, a process in which antigenic particles are engulfed by and very often digested by macrophages and polymorphs. The process of lysis is executed by a complex and unstable blood constituent known as complement, which will not work unless it is activated by a specific antibody; the process of phagocytosis is greatly facilitated when the particles to be engulfed are coated by a specific antibody directed against them.

What happens when an antigen comes in contact with lymphocytes?

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.

They are looking forward (A)/to meet (B) /their parents (C)/No Error (D)

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Hardly had I stepped(A)/out of my house when(B)/I saw them coming towards my house.(C)/No error(D)

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one, which best express the same sentence in Indirect/Direct speech.

‘Don’t you know the way to the station?’ father said to Anjali.

In the following question, out of the given four alternatives, select the one which is opposite in meaning of the given word.

Baroque

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Although it has been felt necessary to devote much space to ________ attempt to find principles that may be said to be at the basis ________ the art of all nations, the executive side of the question has not been neglected. And it is hoped that the __________ method for the study of drawing from the two opposite points of view ofline and mass here advocated may be useful, and help students to avoid some of the _____________ that results from attempting simultaneously the study of these______________ qualities of form expression.

avoid some of the _____________ that results

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Dinesh has been (1)/ absence from (2)/ school since last month. (3)/ No error (4)

'Ganga Action Plan' initiated by the Union Government aims at