576: Distribution of electric power from one place to another is done at high A.C. voltage because:

(a) Wastage of electricity is minimised

(b) Stealing of electric wires is prevented

(c) Electricity spreads in very short time

(d) It adds brightness
577: Which one of the following rivers does not originate in India?

(a) Beas
(b) Ravi
(c) Chenab
(d) Sutlej
578: 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
579: For developing inbred lines in farm animals, following factors are taken into consideration :

1. The crossbreds should be of outstanding type.

2. They should not carry any detrimental genes.

3. Progeney tested animals.

4. Herd size should be large.

Of the statements given above, which one of the following combinations of factors is most essential ?

(a) 1 and 3

(b) 2 and 3

(c) 1 and 4

(d) 2 and 4
580: The Standing Committee of State Finance Ministers recommended in January 2000 uniform rates across the States in respect of

(a) value-added tax

(b) sales tax

(c) stamp duty and registration fees

(d) agricultural income tax