Given below in the table is the decadal data of Population and Electrical Power Production of a country.

Year
Population (million)
Electrical Power Production (GW)*
1951
20
10
1961
21
20
1971
24
25
1981
27
40
1991
30
50
2001
32
80
2011
35
100


* 1 GW = 1000 million watt

Based on the above table, answer the following questions:

1. Which decade registered the maximum growth rate (%) of population?
(A) 1961-71
(B) 1971-81
(B) 1991-2001
(D) 2001-2011



2. Average decadal growth rate (%) of population is:
(A) ~12.21%
(B) ~9.82%
(C) ~6.73%
(D) ~5%



3. Based on the average decadal growth rate, what will be the population in the year 2021?
(A) 40.34 million
(B) 38.49 million
(C) 37.28 million
(D) 36.62 million



4. In the year 1951, what was the power availability per person?
(A) 100 W
(B) 200 W
(C) 400 W
(D) 500 W



5. In which decade, the average power availability per person was maximum?
(A) 1981-1991
(B) 1991-2001
(C) 2001-2011
(D) 1971-1981



6. By what percentage (%) the power production increased from 1951 o 2011?
(A) 100%
(B) 300%
(C) 600%
(D) 900%