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The radiation absorbed by elements of low atomic number is lower than that absorbed by elements of high atomic number. This variation of absorption co-efficient with atomic number can be very well applied to

Correct Answer: ash determination

Consider the following statements:
1. The variation in an average annual range of temperature at 15° latitude of Southern Hemisphere is much less than that at 15° latitude of Northern Hemisphere.
2. At latitudes poleward of 35° the incoming radiation exceeds the outgoing radiation in. Northern Hemisphere, whereas in Southern Hemisphere the outgoing radiation exceeds the incoming radiation.
Which of the statements given above is/are correct?

Arrange the following demographic transition theory given by Blackur (ascending order)
1. Declining phase with low mortality, lower fertility
2. Low stationary phases with low fertility and low mortality
3. Early expanding phase marked by high fertility
4. High stationary phase marked by high fertility and mortality

Which of the following best explain why the lower course of a river is sometimes choked with sediments?
1. The valley of a river is widest in its lower course.
2. The velocity of a river in its lower course is low.
3. The delta sometimes develops in a river's lower course.
4. Much of the river water is drawn for irrigation in the lower course.

The solar radiation that is felt at the earth’s surface includes (i) Direct radiation that has passed through the atmosphere (ii) Diffuse radiation from the sky (iii) Absorbed radiation from the water Identify the correct statement

when demand for factory's products is high . more money is spent at the factory for safety precautions and machinery maintenance than when demand is low. thus the average number of on -the-job accidents per employee each month should be lower during perids when demand is high than when demand is low and less money is available for safety precautions and machinery maintenance .when demand for its products is high, casts the most serious doubt on the conclusion drawn above?

Determine the pan evaporation from the following data using the Christiansen method. Extra-terrestrial radiation in cm = 47.3cm Coefficient of temperature(Ct) = 1.403 Coefficient for wind velocity (Cw)= 1.2 Coefficient for relative humidity (Ch) = 1 Coefficient for percent of possible sunshine(Cs) = 1.073 Coefficient of elevation(Ce) = 1.014

Which of the following statements about physical absorption are correct? Statement 1: Example for physical absorption is the absorption of carbon dioxide into water. Statement 2: Polar interactions between water and the molecules of the solid play an important role in physical absorption.

S1: Different countries show different pattern of growth.
P: Many others have a high birth rate with a low death rate.
Q: Some have a high birth rate and still have a high death rate.
R: The developing countries show the most rapid growth rate.
S: Some others like the European nations, have a low birth rate and a low death rate.
S6: Compared to this in Europe the growth rate is low.

The Proper sequence should be:

Which of the following statements is/are false regarding modern periodic table?
1. Elements in the modern periodic table are arranged in decreasing order of their atomic numbers.
2. Elements in the modern periodic table are arranged in increasing order of their atomic masses.
3. In the modern periodic table, isotopes are placed in adjacent groups.
4. Elements in modern periodic table are arranged in increasing order of their atomic numbers.

L is older than M and taller than N. O is younger than P, older than N and shorter than Q. R is older than S, younger than N, shorter than S and taller than Q. S is older than L, M, O, P, Q, R and S is necessarily false?