Worksheetsclass xi
Total questions: 13
Worksheet time: 9mins
The orientation of atomic orbitals depends on their
spin quantum number
magnetic quantum number
azimuthal quantum number
principal quantum number
which of the folowing concentration term is affected by temperature
molarity
molality
molefraction
none of these
What is the number of signifiant digits present in0.01025
5
4
3
2
state the number of atoms present in 1mole of He
6.022 X 1019
6.022 X 1020
6.022 X 1021
6.022 X 1023
Empirical formula of C6H12O6 is
C6H12O6
CH2O
C3H6O3
CHO
How many orbitals can have the following set of quantum numbers, n = 3, l = 1, m1 = 0 ?
3
1
4
2
Molarity of a solution containing 20 g of NaOH in 200 mL of solution is: (Atomic mass of Na= 23 u, O=16 u, H= 1 u)
2.5 mol/L
5 mol/L
2.5 x 10-3 mol/L
5 x 10-3 mol/L
Under similar conditions of temperature and pressure equal volume of all gases contain equal number of molecules. This is
Law of conservation of mass
Law of definite proportion
Law of multiple proportion
Avogadros law
Candela is the SI unit of which physical quantity
Amount of substance
Pressure
Force
Luminous intensity
which of the following is not a base physical quantity
electric current
luminous intensity
force
mass
Angstrom is the unit of.
Time
Length
Mass
Frequency
Bohr's model of atom is contradicted by.
Planck quantum theory
Pauli's exclusion principle
Heisenberg's uncertainty principle
All of the above
How many atoms are present in 46 u of Na
46
23
1
2
