Question on Quantum Numbers
How many electrons with azimuthal quantum number, l = 3 are present in an atom having atomic number 54?
Question on Atomic Weight
A mono atomic ion has the same atomic number and same atomic weight as its neutral atom. Is this statement true or false?
Question on Gaseous State
A gas is heated in such a way that its pressure and volume both becomes double. Then by decreasing temperature, some of the molecules of the air have been taken in container to maintain the doubled volume and pressure. Assuming one-fourth of initial number of moles has been taken in for the purpose, by what fraction the temperature must have been raised finally of initial absolute temperature?
Question on Nodal Planes
How many nodal planes are present in a px orbital?
Question on Gaseous State
If the Compressibility Factor of a gas is less than unity at STP, will the molar volume of the gas be greater or lesser than 22.4L at STP?
Question on pH
A weak base BOH reacts with 0.1M HCl. The dissociation constant of BOH is 10–6. When 50 ml of 0.1N BOH reacts with HCl, what will the pH of the solution be at the neutralization point of the reaction?
Question on Chemical Kinetics
If 10–5% reactant molecules cross over the barrier in transition state at 298K, what is the activation barrier needed to cross the transition state?
Question on Redox Reaction
1 mole of hydrazine, N2H4 reacts with one mole of selenic acid, H2SeO3, the latter is reduced to selenium. What is hydrazine converted into? Is it N2 or NH3?
Question on Atomic Structure
The azimuthal quantum number cannot have negative values. Is this statement true or false?
Question on Thermochemistry
What is the change in internal energy, DE, for a system that does 70 Joules of work as it absorbs 45 Joules of heat?
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