1266: H1N1 virus is sometimes mentioned in the news with reference to which one of the following diseases?

(a) AIDS
(b) Bird flu
(c) Dengue
(d) Swine flu
1267: Isotopes of the same element differ in the number of:

(a) Protons

(b) Neutrons

(c) Electrons

(d) Positrons
1268: Match List I with List II and select the correct answer using the codes given below the Lists :

List I List II

(Substance) (Physiological role)

I. Ptyalin (A) Converts angioten-sinogen in blood into angiotensin
II. Pepsin (B) Digests starch
III. Renin (C) Digests proteins
IV. Oxytocin (D) Hydrolyses fats
(E) Induces contraction of smooth muscles
Codes:

(a) I-B, II-C, III-A, IV-E
(b) I-C, II-D, III-B, IV-E
(c) I-B, II-C, IH-E, IV-A
(d) I-C, II-A, III-B, IV-D
1269: The word "Denisovan" is sometimes mentioned in media in reference to

(a) fossils of a kind of dinosaurs

(b) an early human species

(c) a cave system found in North-East India

(d) a geological period in the history of the Indian subcontinent
1270: Assertion (A) :

Floods are a recurring feature in the Indo-Gangetic Plain

Reason (R) :

The Indo-Gangetic Plain is built of porous and soft alluvium

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not a correct explanation of A

(c) A is true but R is false

(d) A is false but R is true