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.

One of the two important manifestations of antigen-antibody immunity is lysis while the other is

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.

His parents usually spent (A) / their summer in Ooty (B) /but this year they are spending it in Darjeeling. (C) / No Error (D)

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

The causes and their

X-in the same series
Y-one order, they stand
Z-effects belong to the

The ratio of present ages of R and S is 11:17. Before 11 years the ratio of their ages was 11:20. What is R's present age (in years)?

During their rule the British persuaded or forced cultivators in Assam to grow __________.

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are

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.

Targeting inflation comes from a belief that policy should be _________ and transparent, so that the private sector can factor this ___________ their decision-making. The question that this ________ is: are there more "complicated" policies which _________ better? I just note that one such policy is called "nominal income targeting". _____________ it is more complicated and the private sector is deemed to be intellectually challenged.

_____________ it is more complicated

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.

Targeting inflation comes from a belief that policy should be _________ and transparent, so that the private sector can factor this ___________ their decision-making. The question that this ________ is: are there more "complicated" policies which _________ better? I just note that one such policy is called "nominal income targeting". _____________ it is more complicated and the private sector is deemed to be intellectually challenged.

are there more "complicated" policies which _________ better?