4411: Optical fibre works on the principle of
(a) total internal reflection
(b) refraction
(c) scattering
(d) interference
4412: The meeting of G-15 countries held in Malayasia in 1997 was attended by
(a) 14 member countries
(b) 15 member countries
(c) 16 member countries
(d) 17 member countries
4413: What are the significances of apractical approach to sugarcane production known as Sustainable Sugarcane Initiative ?
1. Seed cost is very low in this compared to the conventional method of cultivation.
2. Drip irrigation can be practiced very effectively in this.
3. There is no application of chemical/inorganic fertilizers at all in this.
4. The scope for intercropping is more in this compared to the conventional method of cultivation.
Select the correct answer using the code given below.
(a) 1 and 3 only
(b) 1, 2 and 4 only
(c) 2, 3 and 4 only
(d) 1, 2, 3 and 4
4414: With reference to Balance of Payments, which of the following constitutes / constitute the Current Account?
1. Balance of trade
2. Foreign assets
3. Balance of invisibles
4. Special Drawing Rights
Select the correct answer using the code given below.
(a) 1 only
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 4
4415: A father is now three times as old as his son. Five years back, he was four times as old as his son. The age of the son is
(a) 12 years
(b) 15 years
(c) 18 years
(d) 20 years