1256: A bag contains 20 balls, 8 balls are green, 7 are white and 5 are red. What is the minimum number of balls that must be picked up from the bag blind folded (without replacing any of it) to be assured of picking at least one ball of each colour ?
(a) 4
(b) 7
(c) 11
(d) 16
1257: Paraffin is a by-product of
(a) Petroleum refining
(b) Processing of agricultural wastes
(c) Cottage industries involving beekeeping
(d) Leather industry
1258: In a town 25% families own a phone and 15% own a car. 65% families own neither a phone nor a car. 2000 families own both a car and a phone.
Consider the following statements in this regard:
I. 10% families own both a car and a phone.
II. 35% families own either a car or a phone.
III. 40,000 families live in the town.
Which of the above statements are correct ?
(a) I and II
(b) I and III
(c) II and III
(d) I, II and III
1259: Match List-I (Minerals) with List-II (Location) and select the correct answer using the codes given below the Lists:
List-I List-II
(Minerals) (Location)
A. Coal 1. Giridih
B. Copper 2. Jayamkondam
C. Manganese 3. Alwar
D. Lignite 4. Dharwar
Codes:
A B C D
(a) 1 4 3 2
(b) 2 3 4 1
(c) 1 3 4 2
(d) 2 4 3 1
1260: Which among the following acts as a resistance against disease in the body?
(a) Vitamins
(b) Carbohydrates
(c) Red Corpuscles
(d) White Corpuscles