Category: Stoichiometry

Which of the following is not a colligative property ?

Hamad Stoichiometry 18/01/2022

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A. Osmotic pressure
B. Depression of freezing point
C. Lowering of vapor pressure
D. None of these

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?

Hamad Stoichiometry 15/01/2022

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A. +816.15
B. +1632.3
C. -1632.3
D. -2448.45

Thermal diffusivity of a refractory brick is high, when its ______________ is high?

Hamad Stoichiometry 13/01/2022

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A. Density
B. Specific heat
C. Thermal conductivity
D. None of these

Othmer chart is useful in estimating the heat of_______________?

Hamad Stoichiometry 13/01/2022

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A. Mixing
B. Wetting
C. Adsorption
D. None of these

‘Giga’ stands for__________________?

Hamad Stoichiometry 11/01/2022

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A. 109
B. 10-12
C. 1012
D. 1015

On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes_________________?

Hamad Stoichiometry 10/01/2022

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A. 1
B. 8
C. 4
D. 2

Concentration of a solution expressed in terms of _______________ is independent of temperature?

Hamad Stoichiometry 10/01/2022

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A. Molarity
B. Normality
C. Molality
D. None of these

1m3 is approximately equal to_________________?

Hamad Stoichiometry 06/01/2022

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A. 28 litres
B. 35 ft3
C. 4.5 litres
D. 4.5 ft3

The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be_________________?

Hamad Stoichiometry 03/01/2022

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A. 10-11
B. 10-10
C. 10-3
D. 10-4

Which of the following expressions defines the Baume gravity scale for liquids lighter than water ?

Hamad Stoichiometry 01/01/2022

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A. °Be = (140/G) – 130
B. °Be = 200(G-1)
C. °Be = 145 – (145/G)
D. °Be = (400/G) – 400