Molecule MCQs : This section focuses on the "Molecule" in Basic Chemical Engineering. These Multiple Choice Questions (MCQ) should be practiced to improve the Basic Chemical Engineering skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
_________ is the unit of measurement for amount of substance in the International System of Units (SI).
A. Density
B. Mole
C. Flow Rate
D. Gravity
Question 2
Mole defined as exactly ?
A. 6.02214076×10^21
B. 6.02214076×10^22
C. 6.02214076×10^23
D. 6.02214076×10^24
Question 3
The mole is widely used in chemistry as a convenient way to express amounts of reactants and products of chemical reactions.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
Question 4
Which term was formerly used for mole of molecules?
A. gram-atom
B. gram-electrons
C. gram-ions
D. gram-molecule
Question 5
The first table of standard atomic weight (atomic mass) was published by John Dalton in?
A. 1800
B. 1802
C. 1805
D. 1810
Question 6
How many grams of NaCl represent 1 mole?
A. 23
B. 30
C. 55.5
D. 58.5
Question 7
Calculate the number of moles in 42 grams of NaHCO3?
A. 0
B. 0..5
C. 1
D. 1.5
Question 8
What are the number of moles of Hydrogen in 158 grams of Ammonium Bicarbonate?
A. 5
B. 10
C. 15
D. 20
Question 9
Calculate the number of moles in 369 grams of CaOCl2?
A. 1
B. 2
C. 3
D. 4
Question 10
1 mole of MgBr2 is 1 gram-molecule of MgBr2 but 3 gram-atoms of MgBr2.
A. Yes
B. No
C. Can be Yes Or No
D. Can not say