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Total capacity is the number of exchangeable bi-valent ions.

Correct Answer: False
Total capacity is the number of active groups i.e., the number of exchangeable monovalent ions. Both volume and dry weight capacity values must be reported.

If the contents of exchangeable ions (cmol kg-1) determined in soil are Na+ = 5, K+ = 5, Ca2+ = 10, Mg2+ = 2, H+ = 1, Al+3 = 1, Cl- = 1.6 and HCO-3 =0.4, the CEC of soil is

Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH– ions. III. Bases are bitter intaste and generate OH– ions.

Which one of the following statements is not true/false?
1. An acid that is completely ionized with ions produces large amounts of H+ ions. for example HCl, H2SO4, HNO3
2. A weak acid that is partially ionized in water produces small amounts of H+ ions. for example - CH3COOH, H2CO3, H2SO3

Number of chiasma / total number of bivalent is________________

Ahmad has containers of two different sizes. The total capacity of 16 containers of one size is x gallons,and the total capacity of 8 containers of the other size is also x gallons , and x> 0. In terms of x , what is the capacity, in gallons, of each of the larger containers?

The total number of boys in a school is 16% more than the total number of girls in the school. What is the respective ratio of the total number of boys to the total number of girls in the school ?

Which of the following statements is true/false?
1. An alkali that is completely ionized in water produces a large number of OH- ions. For example NaOH, KOH
2. An alkali that is partially ionized in water produces a large number of OH+ ions. For example KOH

A mixture contains 20% of A with Heat Capacity 25 J/oC, 30% of B with Heat Capacity 20 J/oC, and 50% of C with Heat Capacity 10 J/oC, what is the Heat Capacity of mixture?

A mixture contains 30% of A with Heat Capacity 10 J/oC, 30% of B with Heat Capacity 20 J/oC, and 40% of C with Heat Capacity 35 J/oC, what is the Heat Capacity of mixture?

A vessel of capacity 2 litre has 25% alcohol and another vessel of capacity 6 litre had 40% alcohol. The total liquid of 8 litre was poured out in a vessel of capacity 10 litre and thus the rest part of the vessel was filled with the water. what is the new concentration of mixture ?