A solution with reasonably permanent pH is called a/an _______________ solution?
A. Ideal
B. Non-ideal
C. Buffer
D. Colloidal
Stoichiometry
The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?
The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?
A. Trouton’s rule
B. Kopp’s rule
C. Antoine equation
D. Kistyakowsky equation
A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is_________________?
A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is_________________?
A. N2O4
B. N2O5
C. N2O3
D. None of these
For a neutral solution (pH = 7), the value of [H+] [OH-] is equal to_________________?
For a neutral solution (pH = 7), the value of [H+] [OH-] is equal to_________________?
A. 0
B. 1
C. 1
With rise in temperature, the heat capacity of a substance___________________?
With rise in temperature, the heat capacity of a substance___________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Either A. or B.; depends on the substance
One of the specific gravity scales is “Brix” (used specifically for sugar solution). It is defined as ______________?
One of the specific gravity scales is “Brix” (used specifically for sugar solution). It is defined as ______________?
A. Brix = (400/G) – 400
B. Brix = 200 (G-1)
C. Brix = 145 – (145/G)
D. None of these
A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be_______________?
A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be_______________?
A. -136.5°C
B. – 136.5°K
C. -273°C
D. 0°K
The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?
The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?
A. +816.15
B. +1632.3
C. -1632.3
D. -2448.45
A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of ________________?
A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of ________________?
A. 3
B. 100
C. 1000
D. None of these
Heat of ____________ of a fuel is called its calorific value?
Heat of ____________ of a fuel is called its calorific value?
A. Formation
B. Combustion
C. Reaction
D. Vaporisation