Options:
- A. Fe+Cr+Ni
- B. Fe+Ni+Cu
- C. Fe+ Cr+Cu
- D. Cu+C+Ni
View Answer
A. Fe+Cr+Ni
Chemistry
Carbon in wrought iron is present as_________?
Options:
- A. Silicon carbide
- B. Iron carbide
- C. Graphite
- D. Partly as iron carbide and partly as graphite
View Answer
B. Iron carbide
If steel is heated to a temperature well below red heat and is then cooled slowly, the process is called_________?
Options:
- A. Annealing
- B. Quenching
- C. Tempering
- D. Nitriding
View Answer
A. Annealing
Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ?
Options:
- A. Zeolites
- B. Sulphonides
- C. Lime
- D. Nitrates
View Answer
A. Zeolites
The substance used in cancer therapy is___________?
Options:
- A. Fe
- B. Co
- C. Ni
- D. Rn
View Answer
B. Co
Which among the following is not a property of Ionic bond _________?
Options:
- A. Sharing of electrons
- B. Transfer of electrons
- C. Losing of electrons
- D. Gain of electrons
View Answer
A. Sharing of electrons
Transition elements, in general, exhibit the following properties, except one. Name that property?
Options:
- A. Variable oxidation state
- B. Natural Radioactivity
- C. Tendency to form complexes
- D. Formation of alloys
View Answer
B. Natural Radioactivity
Sum of protons and neutrons in an atom gives off _________ ?
Options:
- A. Nucleon numbera
- B. Mass number
- C. Atomic number
- D. Both A and B
View Answer
D. Both A and B
Which of the following alloys contain(s) Cu and Zn?
Options:
- A. Bronze
- B. Brass
- C. Gun-metal
- D. Type metal
View Answer
B. Brass
What is the molecular weight of Ammonia (NH3) ________ ?
Options:
- A. 17.031 g/mol
- B. 18.031 g/mol
- C. 19.031 g/mol
- D. 27.033 g/mol
View Answer
A. 17.031 g/mol