Chemistry
Mix
Page 4 of 6
#25 For a given energy sub-level, the total values of magnetic quantum number are:
A) n - 1
B) 2l + 1
C) 4l + 2
D) None
Answer: B
#26 No two electron can have same spin in an orbital. This is:
A) Hund's rule
B) Pauli Exclusion Principle
C) Aufbau rule
D) None of these
Answer: B
#27 The magnetic quantum number for the last electron of Na is:
A) 0
B) +/- 1
C) +/- 2
D) +/- 3
Answer: A
#28 Which represents a mole?
A) 6.02x10^23 atoms
B) 24 litres of oxygen gas at RTP
C) 1g atom of Na
D) All of these
Answer: D
#29 Which one of the following contains maximum number of molecules?
A) 1 mole of CH4
B) 17g of NH3
C) 56g of CO
D) 180g of glucose
Answer: C
#30 The number of atoms present in 1 mole of H2SO4
A) 7 x Na
B) 8 x Na
C) Na
D) 10 x Na
Answer: A
#31 A unit which represent 6.023x10^23
A) Mole
B) 1-gram ionic mass
C) 1 gram molecule of nitrogen
D) All of these
Answer: D
Page 4 of 6
Register or Login for comments
Comments: