Stoichiometry In a neutral solution H⁺ ions are absent OH⁻ ions are absent None of these Both H⁺ and OH⁻ ions are present in very small but equal concentration H⁺ ions are absent OH⁻ ions are absent None of these Both H⁺ and OH⁻ ions are present in very small but equal concentration ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Under conditions of equal reduced pressure and equal reduced temperature, substances are said to be in the 'corresponding states'. At equal reduced conditions i.e., at the corresponding state, the __________ of different gases are nearly the same. Compressibility Molecular weight None of these Humidity Compressibility Molecular weight None of these Humidity ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) 350 140 485 345 350 140 485 345 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water? (atomic weight of calcium = 40) 0.4 2240 1120 4480 0.4 2240 1120 4480 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pick out the wrong conversion formula for the conversion of weight units : 1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton None of these 1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons 1 tonne = 1000 kg = 22.046 lbs 1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton None of these 1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons 1 tonne = 1000 kg = 22.046 lbs ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The total number of atoms in 8.5 gm of NH₃ is __________ x 1023. 3.01 1.204 9.03 6.02 3.01 1.204 9.03 6.02 ANSWER DOWNLOAD EXAMIANS APP