2581: Antigen is a substance which

(a) destroys harmful bacteria
(b) is used to treat poisoning
(c) lowers body-temperature
(d) stimulates formation of antibody
2582: The Parliament of India acquires the power to legislate on any item in the State List in the national interest if a resolution to that effect is passed by the

(a) Lok Sabha by a simple majority of its total membership
(b) Lok Sabha by a majority of not less than two-thirds of its total membership
(c) Rajya Sabha by a simple majority of its total membership
(d) Rajya Sabha by a majority of not less than two-thirds of its members present and voting
2583: Consider the following statements:

The Constitution of India provides that

1. The Legislative Assembly of each State shall consist of not more than 450 members chosen by direct election from territorial constituencies in the State

2. A person shall not be qualified to be chosen to fill a seat in the Legislative Assembly of a State if he/ she is less than 25 years of age

Which of the statements given above is/are correct

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2
2584: In what sequence are the following obtained from a natural gas well?

1. Natural Gas

2. Water

3. Crude oil

(a) 1, 3, 2

(b) 1, 2, 3

(c) 3, 2, 1

(d) 2, 1, 3
2585: An equilateral triangular plate is to be cut into n number of identical small equilateral triangular plates. Which one of the following can be possible value of n?

(A) 296
(B) 216
(C) 256
(D) 196