Skip to content

Home
Quiz
All MCQs
Aptitude
Art
Computer
Engineering
English
Physics MCQs
Chemistry
Biology
General Knowledge
Everyday Science

All MCQs
Contact
Home
News & Updates
Privacy Policy
Quiz

Author name: Admin

772. Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is

A. 5CaO . 3 Al2O₃

B. 3CaO . Al2O₃

C. 3CaO . SiO₂

D. 2CaO . SiO₂

✅ The correct answer is option A.

774. If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase.

A. Convection

B. Nucleate boiling

C. Radiation

D. Conduction

✅ The correct answer is option A.

776. __________ remains constant during the adiabatic cooling of moist air.

A. Wet bulb temperature

B. Dry bulb temperature

C. Relative humidity

D. Specific humidity

✅ The correct answer is option A.

741. The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

A. 0

B. 100

C. 50

D. None of these

✅ The correct answer is option B.

744. Friction factor for fluid flow in pipe does not depend upon the

A. Pipe length

B. Pipe roughness

C. Fluid density & viscosity

D. Mass flow rate of fluid

✅ The correct answer is option A.

747. Tempering of a material does not improve its

A. Machinability

B. Toughness

C. Internal stress level

D. Softness

✅ The correct answer is option A.

750. For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

A. Linearly

B. Exponentially

C. Logarithmically

D. Inversely

✅ The correct answer is option A.

753. There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.

A. One

B. Two

C. Three

D. None of these

✅ The correct answer is option B.

756. A reduction process is accompanied with increase in the

A. Number of electrons

B. Oxidation number

C. Both A & B

D. Neither A nor B

✅ The correct answer is option A.

759. The factor of safety for brittle materials (having elongation < 5%) is based on the __________ stress.

A. Yield

B. Proof

C. Ultimate

D. None of these

✅ The correct answer is option C.

← Previous 1 … 5,639 5,640 5,641 … 5,961 Next →

GetMCQs:

GetMCQs:

Search

Arts Subjects MCQs
Aptitude MCQs
Biology
Chemistry
English
Everyday Science
General Knowledge
Pedagogy
Psychology
Physics
Punjab Public Service Commission (PPSC) - Past Papers
Sociology

Chemical Engineering
Civil Engineering
Environmental Engineering
Mechanical Engineering
Software Engineering
Electrical Engineering

All Computer MCQs
Basics of Computer Science
Operating System
MS Word
MS Excel
MS PowerPoint

Scroll to Top