846: Which organelle in the cell, other than nucleus, contains DNA ?
(a) Centriole
(b) Golgi apparatus
(c) Lysosome
(d) Mitochondrion
847: Match List I with List II and select the correct answer using the codes given below the lists :
List I List II
I. Potassium bromide (A) Fertiliser
II. Potassium nitrate (B) Photography
III. Potassium sulphate (C) Bakery
IV. Mono-potassium tartarate (D) Gunpowder
Codes:
(a) I-B, II-D, III-A, IV-C
(b) I-B, II-D, III-C, IV-A
(c) I-D, II-B, III-C, IV-A
(d) I-D, II-B, III-A, IV-C
848: Doldrums refer to:
(a) A belt of calm and light variable winds near the equator
(b) A particular area in the centre of the Pacific Ocean
(c) The region of the upper atmosphere extending upward from the tropopause to about 20 kms. above the earth
(d) None of these
849: There are 50 students admitted to a nursery class. Some students can speak only English and some can speak only Hindi. 10 students can speak both English and Hindi. If the number of students who can speak English is 21, then how many students can speak Hindi, how many can speak only Hindi and how many can speak only English ?
(a) 21, 11 and 29 respectively
(b) 28, 18 and 22 respectively
(c) 37, 27 and 13 respectively
(d) 39, 29 and 11 respectively
850: Which of the following minerals are found in a natural way in the State of Chhattisgarh ?
1. Bauxite
2. Dolomite
3. Iron ore
4. Tin
Select the correct answer using the code given below:
(a) 1 and 3 only
(b) I, 2,3 and 4
(c) 1, 2 and 3 only
(d) 2 and 4 only