A. Graphite
B. Light water
C. Heavy water
D. Beryllium
Related Mcqs:
- The most commonly used chemical coagulant in water treatment is________________?
A. Ferrous sulphate
B. Alum
C. Lime
D. Hydrazine - In sewage treatment, its sedimentation is speeded up by commonly adding__________________?
A. Hydrochloric acid
B. Lime
C. Copper sulphate
D. Sodium sulphate - Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?
A. Food industry
B. Municipal sewage treatment
C. Petroleum refinery
D. Iron & steel plant - Refrigerants commonly used for domestic refrigerators are_________________?
A. Ethyl chloride or methyl chloride
B. Freon-12
C. Propane
D. NH3 or CO2 - The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is__________________?
A. A . x22
B. Ax1
C. Ax2
D. Ax12 - Internal energy change of a system over one complete cycle in a cyclic process is__________________?
A. Zero
B. +ve
C. -ve
D. Dependent on the path - The ammonia synthesis reaction represented by N2 + 3H2 ⇌ 2NH3; ΔH = – 22.4 kcal, is__________________?
A. Endothermic
B. Exothermic
C. Isothermal
D. Adiabatic - The value of gas constant ‘R’ is__________________?
A. 1.987 cal/gm mole °K
B. 1.987 BTU/lb. mole °R
C. Both A. and B
D. Neither A. nor B - The number of degrees of freedom at the triple point of water is__________________?
A. 0
B. 1
C. 2
D. 3 - pH value of H2SO4 (5% concentration) is__________________?
A. 5
B. 7
C. > 7
D. < 7
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