3256: In the context of proposals to the use of hydrogen-enriched CNG (H-CNG) as fuel for buses in public transport, consider the following statements:
1. The main advantage of the use of H-CNG is the elimination of carbon monoxide emissions.
2. H-CNG as fuel reduces carbon dioxide and hydrocarbon emissions.
3. Hydrogen up to one-fifth by volume can be blended with CNG as fuel for buses.
4. H-CNG makes the fuel less expensive than CNG.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 4 only
(d) 1, 2, 3 and 4
3257: In a tournament each of the participants was to play one match against each of the other participants. 3 players fell ill after each of them had played three matches and had to leave the tournament. What was the total number of participants at the beginning, if the total number of matches played was 75 ?
(A) 12
(B) 10
(C) 8
(D) 15
3258: EFGH : DEFG :: OPQR : ___?___
(a) PQRS
(b) NOPQ
(c) MNOP
(d) QRST
3259: Match the hormones in List I with items in List II and select the correct answer using the codes given below the Lists :
List I
I. Adrenaline
II. Estrogen
III. Insulin
IV. Pheromones
List II
(A) Anger, fear, danger
(B) Attracting partners through sense of smell
(C) Females
(D) Glucose
Codes:
(a) I-C, II-A, III-D, IV-B
(b) I-A, II-C, III-B, IV-D
(c) I-A, II-C, III-D, IV-B
(d) I-C, II-A, III-B, IV-D
3260: Which of the following electoral systems have been adopted for various elections in India ?
I. System of direct elections on the basis of adult suffrage.
II. System of proportional representation by means of the single transferable vote.
III. List system of proportional representation.
IV. Cumulative system of indirect elections.
Select the correct answer from the codes given below.
Codes:
(a) I and II
(b) I and III
(c) I, II and III
(d) II, III and lV