1831: Where does exchange of gases (O2 and CO2) take place in our lungs ?

(a) Alveoli

(b) Bronchi

(c) Pleura

(d) Trachea
1832: For reproducing sound, a CD (Compact Disc) audio player uses a

(a) quartz crystal
(b) titanium needle
(c) laser beam
(d) barium titanate ceramic
1833: Match List I with List II and select the correct answer by using the codes given below the lists :

List I-------List II

I. Malaria------- (A) Bone marrow
II. Filaria------- (B) Brain
III. Encephalitis------- (C) Muscle
IV. Leukaemia------- (D) Lymph node
-------------- (E) Blood cells

Codes:

(a) I-E, II-C, III-B, IV-A
(b) I-E, II-D, III-B, IV-A
(c) I-D, II-C, III-E, IV-A
(d) I-E, II-D, III-A, IV-B
1834: Which of the following countries share borders with Moldova?

1. Ukraine

2. Romania

3. Belarus

Select the correct answer using the code given below:

(a) 1 and 3 only

(b) 1 and 2 only

(c) 1, 2 and 3

(d) 2 and 3 only
1835: Albuquerque captured Goa from the ruler of:

(a) Bijapur

(b) Golkonda

(c) Ahmadnagar

(d) Vijayanagar