Question 1 :
If r is radius of first orbit, the radius of nth orbit of the H atom will be :
Question 2 : <div>State True or False.<br/></div>The velocity of the electron is maximum in the Bohr's last orbit.
Question 3 :
The total energy of the electron revolving around the nucleus is:
Question 5 :
Energy of the electron in hydrogen in its first orbit is:
Question 6 :
If the radius of second stationary orbit (in Bohr's atom) is R. Then, the radius of third orbit will be:
Question 7 :
The ionization energy of hydrogen atom is $13.6eV.$ The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is:<br>
Question 9 :
The first ionization energy of $N$ & $O$ are __________ respectively .
Question 12 :
The ratio of the difference in energy between the first and second Bohr orbits to between the second and third Bohr orbit is:
Question 13 :
The angular speed $(\omega)$ of an electron revolving in $n^{th}$ Bohr orbit and corresponding principal quantum number(n) are related as ____________.
Question 14 :
The ionisation energy for excited hydrogen atom in eV will be :
Question 15 :
For the hydrogen atom, the energy of the electron in the $n$th orbit is given by $E=\dfrac{-13.6}{n^{2}}\ eV$, where $n$ is an integer. The smallest amount of energy that a hydrogen atom can absorb in its ground state is:
Question 16 :
Assertion: 3s, 3p and 3d subshells of hydrogen have the same energy. <br/>Reason: Energy of subshells in the hydrogen atom, depends on the principal quantum number (n) and azimuthal quantum number (l). <br/>
Question 17 :
Calculate the ratio of energies of $2^{nd}$ orbits of hydrogen, $He^+, Li^{+2}$.<br/>
Question 18 :
If the wavelength of the photon emitted from an electron jump n $=$ 4 to n $=$ 2 in a H-like species is 1216 $\overset{o}{A}$, then the species is :
Question 20 :
The quantum number n of the state finally populated in $He^{+}$ ions is <br/>
Question 21 :
The weight, in grams, of KCl (Mol.wt. = 74.5) in 100ml of a 0.1M KCl solution is:
Question 22 : The number of moles of water in 488 g <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7fdb5a3d2442ab829353d"> are:
Question 23 :
A 1.50 g sample of an ore containing silver was dissolved,and all the $ Ag^{+} $ was converted to 0.125 g $ Ag_{2}S $. What was the percentage of silver in the ore?
Question 24 :
If $0.01$ mole of solute is present in $500\ ml $ of solution, its molarity is:
Question 25 :
Semimolar solution contains how many moles of solute in 1L of solution?
Question 26 : 0.52 g of dibasic acid required 100 mL of 0.1 <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7fccdfdd8313cc8726705"> NaOH for complete neutralization. The equivalent weight of acid is:
Question 28 :
Which one of the following set of units represents the smallest and largest amount of energy respectively?
Question 31 :
Assertion: Greater the mole fraction of a gas in gaseous mixture, greater is the pressure it exerts.
Reason: Pressure of gas is due to bombardment of gas molecules on the walls of the container.
Question 32 : <div>A solution is prepared by dissolving 5.64 g of glucose in 60 g of water.<br/></div>Calculate the molality of the solution.<br/>
Question 34 :
______ of a solution varies to a small extent with variation in experimental conditions.<br/>
Question 35 :
If 6 M $KOH$ solution is 28% by weight, then what is the specific gravity of this solution?
Question 37 :
3.65 grams of HCl is dissolved in 16.2 grams of water. The mole fraction of HCl in the resulting solution is:
Question 38 :
The mole fraction of A in 10% (w/w) aq. solution of glucose is:
Question 39 :
What volume of water would be needed dilute 50 ml of 3M $H_2SO_4$ to 0.75M?<br>
Question 40 :
What is the molarity of $H_{2}SO_{4}$ solution present initially in the container?
Question 41 :
What is the mole fraction of the solute in a $1.00$ m aqueous solution?
Question 42 :
If 25 mL of a $H_2SO_4$ solution reacts completely with 1.06 g of pure $Na_2CO_3$, what is the normality of this acid solution?
