2701: When iron rusts, the weight:
(a) Increases
(b) Decreases
(c) Remains the same
(d) First increases then decreases
2702: 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?
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
2703: Examine the following statements:
1. Lady's finger is tastier than cabbage
2. Cauliflower is tastier than lady's finger
3. Cabbage is not tastier than peas
The conclusion that can be drawn from these statements is that
(a) Peas are as tasty as lady's finger
(b) Peas are as tasty as cauliflower and lady's finger
(c) Cabbage is the least tasty of the four vegetables
(d) Cauliflower is tastier than cabbage
2704: Suppose a rocketship is receding from the earth at a speed of 2/10th the velocity of light. A light in the rocketship appears blue to the passengers on the ship. What colour would it appear to an observer on the earth?
(a) Blue
(b) Orange
(c) Yellow
(d) Yellow-orange
2705: Which one of the following territories was not affected by the revolt of 1857?
(a) Lucknow
(b) Jagdhishpur
(c) Chittor
(d) Jhasi