Questions (731)
Q7CSE2011
Microbial fuel cells are considered a source of sustainable energy. Why?
- They use living organisms as catalysts to generate electricity from certain substrates
- They use a variety of inorganic materials as substrates
- They can be installed in waste water treatment plants to cleanse water and produce electricity
Which of the statements given above is/are correct?
- A 1 only
- B 2 and 3 only
- C 1 and 3 only ✓
- D 1, 2 and 3
✓ Correct answer: (C)
Science & Technology › Biology & Health
Q18CSE2011
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because:
- A Water from soil cannot rise to aerial parts
- B Roots are starved of energy ✓
- C Tree is infected by soil microbes
- D Roots do not receive oxygen for respiration
✓ Correct answer: (B)
Science & Technology › Biology & Health
Q40CSE2011
A company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers?
- The food products are not made out of hydrogenated oils
- The food products are not made out of animal fats/oils
- The oils used are not likely to damage the cardiovascular health of the consumers
Which of the statements given above is/are correct?
- A 1 only
- B 2 and 3 only
- C 1 and 3 only ✓
- D 1, 2 and 3
✓ Correct answer: (C)
Science & Technology › Biology & Health
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