UPSC Government Jobs Exams

Radioactivity is measured by [UPSC 2008]

Geiger-Muller counter
Polarimeter
Calorimeter
Colorimeter

Read Solution (Total 1)

UPSC Other Question
Microbial fuel cells are considered a source of sustainable energy. Why?
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Which of the statements given above is/are correct? [UPSC 2011 (CS-P)]

1 only
2 and 3 only
1 and 3 only
1, 2 and 3 Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?[UPSC 2011 (CS-P)]

They activate the enzymes necessary for vitamin synthesis in the body and help prevent vitamin deficiency
They prevent excessive oxidation of carbohydrates, fats and proteins in the body and help avoid unnecessary wastage of energy
They neutralize the free radicals produced in the body during metabolism
They activate certain genes in the cells of the body and help delay the ageing process