Question
With reference to ‘fuel cells’ in which
hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements : (1) If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products. (2) Fuel cells can be used for powering buildings and not for small devices like laptop computers. (3) Fuel cells produce electricity in the form of Alternating Current (AC). Which of the statements given above is / are correct?Solution
The correct answer is D
What is xeriscaping?Â
An instrument used to measure the height of tree, is portable and does not uses Pythagoras theorem
Site of protein synthesis in a cell is
Which insect is considered one of the most important disease vectors among humans and why?
One kilogram of nitrogen is equivalent to which of the following quantity of urea?
Coordination is involved in which of the following functions?
Which one of the following is not a component of ‘disease triangle’
Which of the following is not a measure of dispersion?
Regeneration of whole plant from callus and suspension cultures in the nutrient medium isÂ
The enzyme alpha-amylase, crucial in carbohydrate digestion, acts on which types of glycosidic linkages?