256: Itaipu Dam built on the River Parana is one of the largest dams in the world. Which of the following two countries have this as a joint project?
(a) Colombia and Paraguay
(b) Paraguay and Ecuador
(c) Brazil and Paraguay
(d) Brazil and Peru
257: Which of the following States has "Urdu" as its official language?
(a) Bihar
(b) Jammu & Kashmir
(c) Madhya Pradesh
(d) Rajasthan
258: What is the role of ultraviolet (UV) radiation in the water purification systems?
1. It inactivates/kills the harmful micro-organism in water.
2. It removes all the undesirable odours from the water.
3. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
259: Which of the following are the objectives of the Commission for Agricultural Costs and Prices (CACP) ?
I. To stabilise agricultural prices.
II. To ensure meaningful real income levels to the farmers.
III. To protect the interest of the consumers by providing essential agricultural commodities at reasonable rates through public distribution
system.
IV. To ensure maximum price for the farmer.
Select the correct answer from the codes given below :
Codes:
(a) I, II and III
(b) I, II and IV
(c) I, III and IV
(d) II, III and IV
260: A person purchases 100 pens at a discount of 10%. The net amount of money spent by the person to purchase the pens is Rs. 600. The selling expenses incurred by the person are 15% on the net cost price. What should be the selling price for 100 pens in order to earn a profit of 25%?
(a) 862.50
(b) 802.50
(c) 811.25
(d) 875