MCQs

Q381: Electronic configuration of K is _____?

• A) [He] 4s¹
• B) [Ar] 4s¹
• C) [Ar] 4s²

Q382: A 4s orbital has _____?

• A) Three node
• B) One node
• C) Two node

Q383: Choose the value of the Rydberg constant among the following value?

• A) 1.007 x 107 m⁻¹
• B) 1.09678 x 10⁷ m⁻¹
• C) 1.602 x - 19C

Q384: Which of the following molecules has no net dipole moment?

• A) HCl
• B) H₂O
• C) CCl₄

Q385: Ionic radius in period from left to right ______?

• A) Increases
• B) Decreases
• C) 1st increase and then decrease

Q386: Which of the following molecules has K bond?O2

• A) O2
• B) NH3
• C) H2O

Q387: Which of the following does not give iodoform test? Benzophenone, Ethanol, Ethanol, Acetophenone

• A) Benzophenone
• B) Ethanol
• C) Acetophenone

Q388: An ester is prepared by ______?

• A) Carboxylic acid and alcohol
• B) Ketone and alcohol
• C) Aldehyde and alcohol

Q389: Bats are ____ animals.

• A) Diurnal
• B) Aquatic
• C) Nocturnal

Q390: In a resonance structure of a molecule ______?

• A) Same energy
• B) All of these
• C) Arrangement of atom should be same