Engineering Chemistry Important MCQs

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1. : The Gypsum is always added after calcination in the manufacture of Portland cement to _________
(A) None of the mentioned
(B) Increase the lime saturation factor
(C) Prevent flash setting
(D) Improve the quality of cement

2. : “Father of the modern Portland cement industry” is ____________
(A) Peter Agre
(B) William Aspdin
(C) Richard Abegg
(D) Emil Abderhalden

3. : What is the percentage composition of alumina in Portland cement?
(A) 60–69
(B) 17–25
(C) 3–8
(D) 2–4

4. : Why are all Portland cements hydraulic cement?
(A) Because they set and harden in the absence of water
(B) Because they set and harden in the presence of water
(C) Because they do not harden after mixing with water
(D) None of the mentioned option

5. : The type of cement that possesses hydraulic qualities is __________
(A) Puzzolona
(B) Natural
(C) Slag
(D) Portland

6. : The Portland cement is made by calcining at a temperature equals to which of the following?
(A) 3000°C
(B) 1800°C
(C) 1500°C
(D) 2000°C

7. : The Blast furnace slag is the mixture of which of the following?
(A) Slaked lime and calcium silicate
(B) Aluminium silicate and hydrated lime
(C) Silica, alumina and calcium oxide
(D) Calcium silicate and aluminium silicate

8. : The compound that causes the cement efflorescent, if present in excess is _______________
(A) Iron oxide
(B) Alkali oxide
(C) Sulphur trioxide
(D) Lime

9. : The incorrect option from the following is __________
(A) The Fischer projections are always two-dimensional representations of three-dimensional molecules
(B) The chiral molecules that are non-superimposable mirror images of each other are called the enantiomers
(C) E and Z notations are always based upon the Cahn, Ingold, and the Prelog priority system
(D) A molecule is achiral if it is not superimposed on its mirror reflection

10. : The compound that imparts grey color, strength and hardness to the Portland cement is ______________
(A) Iron oxide
(B) Alumina
(C) Magnesium oxide
(D) Silica

11. : In the glyceraldehydes, which of the following is the complete sequence of priority?
12. : The diastereomers are________
(A) Molecules that do not have non-superimposable mirror images
(B) Molecules with superimposable mirror images
(C) Molecules with non-superimposable mirror images
(D) None of the mentioned

13. : The type of projection in which we can get staggered and eclipsed conformations is _________
(A) Sawhorse Projection
(B) Newman Projection
(C) Fischer Projection
(D) Wedge Projection

14. : When is the cis-trans nomenclature not applicable?
(A) The different groups that are attached to the carbon atom of the double bond are not always the same
(B) One of the groups that is attached to each carbon atom must be the same
(C) The different groups that are attached to the carbon atom of the double bond are always the same
(D) The cis-trans nomenclature is always applicable for all the compounds

15. : The type of compounds that cannot exhibit geometrical isomerism is __________
(A) Crystal Compound
(B) Triply Bonded
(C) Cyclic Compounds
(D) Singly Bonded

16. : The Stereoisomers are _____________
(A) The isomers that have the same molecular formula and the same configuration
(B) The isomers that have a different molecular formula but the same configuration
(C) The isomers that have the same molecular formula but the different configuration
(D) The isomers that have a different molecular formula and the different configuration

Engineering Chemistry MCQs

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By: Prof. Dr. Fazal Rehman | Last updated: May 22, 2025

Engineering Chemistry MCQs

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