Daily Quiz – 08.07.2026

Statement I: Higher ethanol blending in petrol can reduce tailpipe carbon dioxide emissions, but it does not necessarily improve fuel economy in all vehicles.

Statement II: Ethanol has a lower calorific value than petrol; therefore, vehicles not specifically designed for higher ethanol blends may experience lower mileage even though ethanol has a higher octane number.

Statement III: A higher octane number by itself is sufficient to ensure better fuel efficiency irrespective of engine design and compression ratio.

Which of the following relationships among the above statements is/are correct?

1. Statement II provides the scientific basis for the observation made in Statement I.
2. Statement III qualifies Statement I by identifying the condition under which fuel economy improves.
3. Statements I and II together imply that environmental benefits and fuel economy are distinct performance parameters.

Options:

Statement I: A weak southwest monsoon can adversely affect India's macroeconomic stability because agriculture influences not only food production but also rural demand, inflation, and overall economic growth.

Statement II: The India Meteorological Department has forecast below-normal rainfall after a significant rainfall deficit, while the possibility of a strong ("super") El Nino increases the risk of prolonged rainfall deficiency over India, although its influence generally operates with a time lag.

Statement III: Expansion of irrigation infrastructure alone is sufficient to eliminate the economy-wide risks arising from a weak monsoon, irrespective of cropping patterns, food supply management, and climate variability.

Which of the following relationships among the above statements is/are correct?

1. Statement II provides empirical support to the concern expressed in Statement I.
2. Statement III represents an oversimplification and therefore contradicts the broader implication of Statement I.
3. Statements I and III together establish that irrigation expansion is a sufficient condition for ensuring macroeconomic stability during weak monsoon years.

Options:

1. Nigeria is located on the western coast of Africa.
2. The Niger River and the Benue River are the principal rivers of Nigeria.
3. Nigeria shares its western boundary with Cameroon.

Which of the statements given above is/are correct?