Question Bank No: 1

1. Human life expectancy is of the order of

 a)105 S
 b)107 S
 c)1010 S
 d)109 S

2. Role of DNA in heridity is the basis of

 a)computer
 b)genetic engineering
 c)laser
 d)nuclear reactor

3. The intensity of solar enery per meter square on earth's surface is about

 a)1kw/ m2
 b)100 kw / m2
 c)0.1 kw/ m2
 d)0.0001 kw / m2

4. The size of blood corpascles is

 a)100m
 b)10−3m
 c)10−5m
 d)10−8m

5. The ratio of one micron to one nanometer is

 a)103
 b)10−3
 c)10−6
 d)10−9