Default Title

Questions

Question (1)

QN007510

The formula unit mass of sodium chloride (NaCl) is:

(A) 23 u
(B) 35.5 u
(C) 58.5 u
(D) 60 u

Correct Answer: C

Explanation:

23 + 35.5 = 58.5 u

Link:

Report Error

Question (2)

QN007511

Formula unit mass is defined as:

(A) Mass of one atom
(B) Sum of atomic masses of all ions present in one formula unit
(C) Number of ions in compound
(D) Mass of electrons only

Correct Answer: B

Explanation:

Link:

Report Error

Question (3)

QN007512

The formula unit mass of magnesium oxide (MgO) is:

(A) 24 u
(B) 16 u
(C) 40 u
(D) 56 u

Correct Answer: C

Explanation:

24 + 16 = 40 u

Link:

Report Error

Question (4)

QN007513

Which ionic compound has formula unit mass 58.5 u?

(A) NaCl
(B) MgO
(C) CaO
(D) KCl

Correct Answer: A

Explanation:

Link:

Report Error

Question (5)

QN007514

The formula unit mass of calcium oxide (CaO) is:

(A) 40 u
(B) 56 u
(C) 72 u
(D) 96 u

Correct Answer: B

Explanation:

40 + 16 = 56 u

Link:

Report Error

Question (6)

QN007515

Formula unit mass is used mainly for:

(A) Covalent compounds
(B) Ionic compounds
(C) Elements only
(D) Gases only

Correct Answer: B

Explanation:

Link:

Report Error

Question (7)

QN007516

The formula unit mass of potassium chloride (KCl) is:

(A) 39 u
(B) 35.5 u
(C) 74.5 u
(D) 78 u

Correct Answer: C

Explanation:

39 + 35.5 = 74.5 u

Link:

Report Error

Question (8)

QN007517

The unit of formula unit mass is:

(A) kg
(B) g
(C) u
(D) cm³

Correct Answer: C

Explanation:

Link:

Report Error

Question (9)

QN007518

Which ionic compound has the lowest formula unit mass?

(A) NaCl
(B) MgO
(C) KCl
(D) CaO

Correct Answer: B

Explanation:

Link:

Report Error

Question (10)

QN007519

The formula unit mass of calcium chloride (CaCl₂) is:

(A) 75 u
(B) 91 u
(C) 111 u
(D) 147 u

Correct Answer: C

Explanation:

40 + (2 × 35.5) = 111 u

Link:

Report Error

Excel With Tutors

Learn At Your Own Pace... Because, Everyone's Pace of Learning is Different...

ExcelWithTutors

A unit of Innovexcel Edu Solution LLP.

SWIFT, RELIABLE & CONVENIENT..

Social Media

Corporate Office :
Bharat Impact Building, C-26, Sector - 59, Noida, Uttar Pradesh - 201301, India

For Student

For Tutors

OUR POLICY

Excel With Tutors : A Perfect Tutoring Platform & Repository of Learning Materials. Matches the Best Tutor as Per Your Requirement.