PRELIMS 2021 KEYS RAJA sir cracking IAS Academy

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January 27, 2021 - Daily Quiz

1. With reference to Indian history, which of the following is/are the essential elements of the feudal system? (1) A very strong centralized political authority and a very weak provincial or local political authority (2) The emergence of administrative structure based on control and possession of the land (3) Creation of the lord-vassal relationship between the feudal lord and his overlord Select the correct answer using the code given below. (a) 1 and 2 only (b) 2 and 3 only (c) 3 only (d) 1, 2 and 3
2. Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult an effective malaria vaccine? (a) Malaria is caused by several species of Plasmodium. (b) Man does not develop immunity to malaria during natural infection. (c) Vaccines can be developed only against bacteria. (d) Man is only an intermediate host and not the definitive host.
3. A gardener has 1000 plants. He wants to plant them in such a way that the number of rows and the number of columns remains the same. What is the minimum number of plants that he needs more for this purpose? (a) 24 (b) 32 (c) 50 (d) 42 4. Chlorination is a process used for water purification. The disinfecting action of chlorine is mainly due to (a) The formation of hydrochloric acid when chlorine is added to water. (b) The formation of hypochlorous acid when chlorine is added to water. (c) The formation of nascent oxygen when chlorine is added to water. (d) The formation of hydrogen when chlorine is added to water. 5. A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is (a) O positive (b) A positive (c) B positive. (d) Cannot be determined on the basis of the given data. ANSWERS 1. (a) 2. (a) 3. (d) 4. (c) 5. (a) https://in.pinterest.com/pin/657525614329880848/






POSTED ON 27-01-2021 BY ADMIN
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