Question 1

Variability of rainfall is
i. largest in regions of high rainfall
ii. largest in coastal areas
iii. largest in regions of scanty rainfall
The correct answer is

Accepted Answer

Variability of rainfall is largest in regions of scanty rainfall because these areas often experience more unpredictable and irregular precipitation patterns compared to regions with high or consistent rainfall.

Question 2

In India, which of the following is adopted as standard recording raingauge ?

Accepted Answer

The answer of In India, which of the following is...

Question 3

The maximum average depth due to one day storm over an area of 100 km² is 100 mm. Depth-Area-Duration (DAD) curves indicate that for the same area of 100 km² the maximum average depth for a 3 hour storm will be

Accepted Answer

DAD curves indicate that for the same area, the maximum average depth decreases with increasing duration.

Question 4

The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by

Accepted Answer

The probability of an event with a return period of 100 years occurring in any given year is 1/100 = 0.01. The probability of it not occurring in any given year is 1 - 0.01 = 0.99. The probability of it not occurring over 10 years is (0.99)^10. Therefore, the probability of the event occurring at least once in 10 years is 1 - (0.99)^10.

Question 5

The most suitable chemical which can be applied to the water surface for reducing evaporation is

Accepted Answer

Cetyl alcohol is the most suitable chemical for reducing evaporation when applied to the water surface because it can form a very thin film on the surface of the water, significantly reducing the rate of evaporation. This property is not as effectively found in the other alcohols listed.

Quiz 7: River Meandering, Training and Hydroelectricity

Variability of rainfall is i. largest in regions of high rainfall ii. largest in coastal areas iii. largest in regions of scanty rainfall The correct answer is

In India, which of the following is adopted as standard recording raingauge ?

The maximum average depth due to one day storm over an area of 100 km2 is 100 mm. Depth-Area-Duration (DAD) curves indicate that for the same area of 100 km2 the maximum average depth for a 3 hour storm will be

The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by

The most suitable chemical which can be applied to the water surface for reducing evaporation is

The maximum average depth due to one day storm over an area of 100 km² is 100 mm. Depth-Area-Duration (DAD) curves indicate that for the same area of 100 km² the maximum average depth for a 3 hour storm will be