216: 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
217: Two cars X and Y start from two places A and B respectively which are 700 km apart at 9 a.m. Both the cars run at an average speed of 60 km/hr. Car X stops at 10 a.m. and again starts at 11 a.m. while the other-car Y continues to run without stopping. When do the two cars cross each other?
(a) 2 : 40 p.m.
(b) 3 : 20 p.m.
(c) 4 : 10 p.m.
(d) 4 : 20 p.m.
218: Which of the following events is not correct ?
(a) Simon Commission --- 1928
(b) Salt Satyagraha --- 1930
(c) Gandhi-lrwin Pact --- 1931
(d) Quit India Movement --- 1942
219: Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning?
1. Smelting units
2. Pens and pencils
3. Paints
4. Hair oils and cosmetics
Select the correct answer using the codes given below :
(a) 1, 2 and 3 only
(b) 1 and 3 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
220: Milindapanho is in the form of a dialogue between the King Menander and the Buddhist monk
(a) Nagasena
(b) Nagarjuna
(c) Nagabhatta
(d) Kumarilabhatta