1546: With reference to Indian history, which of the following is/are the essential elementy elements of the feudal system?

1. A very strong centralized political authority and a very weak provincial or local political authority
2. Emergence of administrative structure based on control and possession of land
3. Creation of 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
1547: The main difference between raw soybeans and cooked soybeans is in respect of

(a) Amino acid composition

(b) Biological value of proteins

(c) Protein content

(d) Calorific value
1548: It is possible to produce algae based biofuels, but what is/are the likely limitation(s) of developing countries in promoting this industry?

1. Production of algae based biofuels is possible in seas only and not on continents.

2. Setting up and engineering the algae based biofuel production requires high level of expertise/technology until the construction is completed.

3. Economically viable production necessitates the setting up of large scale facilities which may raise ecological and social concerns.

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
1549: At which one of the following Place did Mahatma Gandhi first start his Satyagraha in India?

(a) Ahmedabad
(b) Bardoli
(c) kheda
(d) Champaran

1550: Galvanised iron sheets are protected from rusting due to the presence of a layer of

(a) lead

(b) chromium

(c) zinc

(d) tin