A. Neutrons and protons
B. Protons and electrons
C. Neutrons and electrons
D. Both A. & B.
Related Mcqs:
- The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are________________?
A. 1
B. 2
C. 3
D. 4 - The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of_________________?
A. Formation
B. Solution
C. Combustion
D. Fusion - Disappearance of snow in subzero weather exemplifies the process of_________________?
A. Evaporation
B. Sublimation
C. Vaporisation
D. Melting - Atmospheric pressure corresponds to a hydrostatic head of_________________?
A. 13.6 cms of Hg
B. 34 ft ofH2O
C. 1 metre of H2O
D. 13.6 metres of Hg - In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is__________________?
A. Independent of temperature
B. Increases with rise in pressure
C. Increased with decrease in pressure
D. Unchanged with pressure changes - In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is__________________?
A. Independent of the temperature
B. Increased with the increase in pressure
C. Decreased with the increase in pressure
D. Unchanged by the pressure change - “The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes”. This is the _____________ law?
A. Dalton’s
B. Amagat’s
C. Gay-Lussac’s
D. Avogadro’s - “The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements.” This is the statement of___________________?
A. Law of Petit and Dulong
B. Kopp’s rule
C. Nernst heat theorem
D. Trouton’s rule - At what temperature, given mass of a gas that occupies a volume of 2 litres at N.T.P. will occupy a volume of 4 litres, if the pressure of the gas is kept constant ?
A. 273°C
B. 273°K
C. 100°C
D. 200°C - Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?
A. Mixing
B. Adsorption
C. Wetting
D. Complete wetting
