Stainless steel contains___________?

A. Fe+Cr+Ni
B. Fe+Ni+Cu
C. Fe+ Cr+Cu
D. Cu+C+Ni

Submitted by: Muhammad Ali Kunbhar

If steel is heated to a temperature well below red heat and is then cooled slowly, the process is called_________?
A. Annealing
B. Quenching
C. Tempering
D. Nitriding
Submitted by: Muhammad Ali Kunbhar
Percentage of calcium in calcium carbonate is___________________?
A. 80%
B. 30%
C. 40%
D. 20%
Butyl chloride gives possible isomers ?
A. 2
B. 3
C. 4
D. 5
In solids the temperature is the measure of__________________?
A. Average kinetic energy of molecules
B. Vibrational kinetic energy
C. Translational kinetic energy
D. None of the above
Which one of the following looks odd__________________?
A. H2SO4
B. KMnO4
C. H2S
D. K2CrO4
Which one is false for evaporation ?
A. Surface phenomenon
B. Continuous
C. Exothermic
D. Cause cooling
A theoretical link between quantum mechanics and thermodynamics is_________?
A. Electrchemistry
B. Matrix mechanics
C. Statistical thermodynamics
D. Soectroscopic analysis
Submitted by: Muhammad Ali Kunbhar
A metallic atom loses its valence electron to form a/an _________?
A. an anion
B. a cation
C. an anion – cation
D. none of these
Submitted by: Aamir khan Hullio
Hydrogen Gas can be prepared by thermal decomposition of Methane in the absence of Air at above____
A. 500⁰C
B. 700⁰C
C. 900⁰C
D. 1300⁰C
Submitted by: Aamir khan Hullio
The maximum mass is present in 1dm3 for the following gas at STP.
A. C₃H₈
B. CO₂
C. CO
D. CS₂
Submitted by: Aamir khan Hullio