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.

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

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expressesthe same sentence in Passive/Active voice.

The cricket ball struck me on the head.

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'.

I saw his (A)/ unbelievably really quite (B)/ delightful cottage. (C)/ No Error (D)

In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct.

1. After the firing that evening the street that used to be full of people was completely deserted.
P. Nor were any windows open.
Q. Suddenly, I detected a movement to my left.
R. There was no trace of any human beings, and all doors were firmly closed.
S. Surprisingly, even the stray dogs had disappeared.
6. I was so frightened that I ran for my life.

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.

Of the three activities of thought, word and deed, perhaps thought is the most ______ and powerful force, for it is the ______ of the other two. Success is achieved twice, once in the mind and the second time in the real world. No matter in whose mind thought occurs; its laser-like energy seeks a target. That’s why we give so much importance to ______, seeking divine blessings before ______ on any project as we know that positive thinking is a strong force that can be ______ for the welfare and success of all.

that can be ______ for the welfare

The simple interest on a sum for 5 years is two­fifth of the sum. The rate of interest per annum is

If the cost price of 20 books is the same as selling price of 25 books, then the loss percentage is

ΔABC is similar to ΔDEF. If the ratio of similar sides is K:1, the ratio of their areas is