GRE Questions

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A research paper is which of the following?

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.

Clandestine

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
 
Many lost dogs ______ been given back to their owners

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

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

Adjacent

A sentence has been given in Active/Passive Voice. Out of the four given alternatives, select the one which best expresses the same sentence in Passive/Active Voice.

Somebody has stolen mobile phone.

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

Egregious

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'.
 
1. Cybercrime cases pose various kinds of
2. Challenges which requires strengthening of
3. The institutional mechanism.
4. No error