In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
The ___(1)__ of energy in India are met from both commercial and non commercial sources. The most __(2)___ sources of energy today are coal and natural gas, hydro electricity and nuclear power. On the other hand, firewood, cow-dung cakes and vegetable waste etc. ___(3)__ non commercial forms of energy. While non commercial forms of energy __(4)___ demand, coal is the __(5)___ source of commercial energy in India.
For the following questions answer them individually
What least value which should be added to 1812 to make it divisible by 7, 11 and 14?
A is 1.5 times efficient than B therefore takes 8 days less than B to complete a work. If A and B work on alternate days and A works on first day, then in how many days the work will be completed?
One of the diagonal of a rhombus is 70% of the other diagonal. What is the ratio of area of rhombus to the square whose side is same as the length of the larger diagonal?
A shopkeeper sells a table at a discount of 20% and earns a profit of 60%. If he sells the same table at 40% discount, then what will be his new profit percent?
If A/3 = B/2 = C/5, then what is the value of ratio $$(C + A)^{2} : (A + B)^{2} : (B + C)^{2}$$?