671: Which one of the following polymers is widely used for making bullet proof material ?
(a) Polyvinyl chloride
(b) Polyamides
(c) Polyethylene
(d) Polycarbonates
672: A decrease in tax to GDP ratio of a country indicates which of the following?
1. Slowing economic growth rate
2. Less equitable distribution of national income
Select the correct answer using the code given below.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
673: At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds,
Which of the statements given above is/are correct?
(a) 1 and 2 only
(b) 2 Only
(c) 1 and 3 only
(d) 1, 2 and 3
674: Consider the following specific stages of demographic transition associated with economic development :
1. Low birthrate with low death rate
2. High birthrate with high death rate
3. High birthrate with low death rate
Select the correct order of the above stages using the codes given below :
(a) 1, 2, 3
(b) 2, 1, 3
(c) 2, 3, 1
(d) 3, 2, 1
675: What is "Terminal High Altitude Area Defense (THAAD)", sometimes seen in the news?
(a) An Israeli radar system
(b) India's indigenous anti-missile programme
(c) An American anti missile system
(d) A defence collaboration between Japan and South Korea