In ________________ process a layer of molten tin is deposited on metals.
- AAnodization
- ✓Tinning
- CGalvanizing
- DAlloying
Answer: B.
View full solution →Question types
P-1 Metallurgy question types
27 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
27
Questions
8
Question groups
5
Question types
01
M.C.Q
4 Q→02Give scientific reasons: [2 M]
4 Q→03Answer the following questions: [2 M]
6 Q→04Answer the following questions: [3 M]
9 Q→05Answer the following questions: [5 M]
1 Q→06Do As Directed.
1 Q→07Write notes.
1 Q→08Find An Odd One Out
1 Q→Sample Questions
P-1 Metallurgy questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Good conductor of electricity is _____________.
- ABromine
- BIodine
- ✓Graphite
- DSulphur
Answer: C.
View full solution →Gold plated ornaments is the example of _____________.
- ✓Electroplating
- BAlloying
- CAnodizing
- DGalvanizing
Answer: A.
View full solution →In the Wilfley table method, the particles of gangue are separated by ____________ separation method.
- Amagnetic
- Bfroth floatation
- Chydraulic
- ✓gravitational
Answer: D.
View full solution →Give scientific reason:
On exposure to air, silver articles turn blackish after some time.
On exposure to air, silver articles turn blackish after some time.
Give scientific reason:
Lemon or tamarind is used for cleaning copper vessels turned greenish.
Lemon or tamarind is used for cleaning copper vessels turned greenish.
Give scientific reason:
Anodes need to be replaced from time to time during the electrolysis of alumina.
Anodes need to be replaced from time to time during the electrolysis of alumina.
Give scientific reason:
The copper vessels turn greenish and silver articles turn blackish when kept open in air for long time.
The copper vessels turn greenish and silver articles turn blackish when kept open in air for long time.
Answer the following:
i. Name the main ore of aluminium.
ii. What impurities are present in aluminium ore?
i. Name the main ore of aluminium.
ii. What impurities are present in aluminium ore?
A tapping vessel opens in a tank like container that is tapering on the lower side. The tank has an outlet for water on the upper side and a water inlet on the lower side. Finely ground ore is released in the tank. A forceful jet of water is introduced in the tank from lower side and gangue particles and pure ore are separated by this method.
i. The above description is of which gravitation separation method?
ii. Draw labelled diagram of this method.
i. The above description is of which gravitation separation method?
ii. Draw labelled diagram of this method.
Out of sodium and sulfur which is a metal? Explain its reaction with the oxygen.
In two methods of control of corrosion of aluminium, either a layer of aluminium oxide is formed or a silver plating is done on the surface. State to which electrode the aluminium article is attached in these methods respectively.
Observe the following diagram and answer the questions:
i. Write the 'anode reaction'.
ii. Write the 'cathode reaction'.
iii. What is the purpose of mixing 'cryolite' and 'fluorspar' with 'alumina' in the electrolytic reduction of alumina?
i. Write the 'anode reaction'.
ii. Write the 'cathode reaction'.
iii. What is the purpose of mixing 'cryolite' and 'fluorspar' with 'alumina' in the electrolytic reduction of alumina?
Read the following sentence and answer the questions:
" NaCl is an ionic compound."
i. Why is NaCl an ionic compound?
ii. State any two properties of ionic compounds.
" NaCl is an ionic compound."
i. Why is NaCl an ionic compound?
ii. State any two properties of ionic compounds.
Explain the following terms:
i. Metallurgy
ii. Ores
iii. Gangue
i. Metallurgy
ii. Ores
iii. Gangue
Identify the process given below and accordingly draw neat labelled diagram:
A molten mixture of alumina (melting point $>2000^{\circ} C$ ) is done in a steel tank. The tank has a graphite lining on the inner side. The lining does the work of cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite $\left( Na _3 AlF _6\right)$ and fluorspar $\left( CaF _2\right)$ are added in the mixture to lower its melting point upto $1000^{\circ} C$.
View full solution →A molten mixture of alumina (melting point $>2000^{\circ} C$ ) is done in a steel tank. The tank has a graphite lining on the inner side. The lining does the work of cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite $\left( Na _3 AlF _6\right)$ and fluorspar $\left( CaF _2\right)$ are added in the mixture to lower its melting point upto $1000^{\circ} C$.
Explain the term anodization with example.
Give one use of it.
Give one use of it.
State the general properties of ionic compounds.
###
Write any three general properties of ionic compounds.
###
Write any three general properties of ionic compounds.
Find An Odd One Out :
Tinning, anodization, alloying, froth floatation
Tinning, anodization, alloying, froth floatation
Write a short note on alloying.
Tinning, anodization, alloying, froth floatation
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