Weight of 56 litres of ammonia at N.T.P. is _____________ gm?
Weight of 56 litres of ammonia at N.T.P. is _____________ gm?
A. 2.5
B. 42.5
C. 56
D. 2800
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Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of ______________ °C?
Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of ______________ °C?A. 770
B. 570
C. 270
D. 70With increase in the temperature of pure (distilled) water, its____________________?
With increase in the temperature of pure (distilled) water, its____________________?A. pOH decreases and pH increases
B. pOH and pH both decreases
C. pH and pOH both increases
D. pH decreases and pOH increases2 litres of nitrogen at N.T.P. weighs ______________ gms ?
2 litres of nitrogen at N.T.P. weighs ______________ gms ?A. 14
B. 2.5
C. 28
D. 1.25Sodium ______________ has inverted solubility curve i.e. its solubility increases with the lowering of temperature?
Sodium ______________ has inverted solubility curve i.e. its solubility increases with the lowering of temperature?A. Carbonate (monohydrate)
B. Chloride
C. Thiosulphate
D. Bisulphite1 ata is equivalent to_________________?
1 ata is equivalent to_________________?A. 1 atm
B. 10 torr
C. 0.98 Pascal
D. 1 kgf/cm2One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about_____________________?
One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about_____________________?A. 0.19
B. 0.33
C. 0.40
D. 0.67