3256: Consider the following statements, the purpose of adding sodium sulphate and sodium silicate to the detergent in a washing powder is
1. To keep the washing powder dry
2. To maintain the alkalinity of the powder
Which of these statements is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
3257: Suppose a rocketship is receding from the earth at a speed of 2/10th the velocity of light. A light in the rocketship appears blue to the passengers on the ship. What colour would it appear to an observer on the earth?
(a) Blue
(b) Orange
(c) Yellow
(d) Yellow-orange
3258: The easiest way of finding out the nutritional status for large number of children in a short time is by:
(a) Studying their behaviour
(b) Studying their hair, face and eyes
(c) Measuring their height and weight
(d) All of the above
3259: In the context of global economy, which one of the following pairs is not correctly matched?
(a) JP Morgan Chase : Financial Services
(b) Roche Holding AG : Financial Services
(c) WL Ross & Co. : Private Equity Firm
(d) Warburg Pincus : Private Equity Firm
3260: Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine ?
(a) Malaria is caused by several species of Plasmodium
(b) Man does not develop, immunity to malaria during natural infection
(c) Vaccines can be developed only against bacteria
(d) Man is only an intermediate host and not the definitive host