Select Goal &
City
Select Goal
Explore
Question:
Solder is an alloy of:
Solder is an alloy of:
Updated On: Mar 28, 2024
- $ Pb+Cu $
- $ Cu+Sn $
- $ Pb+Sn $
- $ Sn+Al $
Hide Solution
Verified By Collegedunia
The Correct Option is C
Approach Solution - 1
Solder is an alloy of Pb + Sn. Its melting point is quite low, hence, is used in soldering the chips (ICs) etc.
Was this answer helpful?
1
0
Hide Solution
Verified By Collegedunia
Approach Solution -2
Ans: Solder is an alloy of lead and tin. They are mainly used for joining the metals together. It contains 63% tin and 37% lead. This composition is specific because at this composition, it has the lowest melting point. Therefore it can be used for ideal soldering purposes. But due to the health issues lead free alternatives are also increasing. It is widely used in:
- Plumbing
- Electronics work
- Art of stained glass
- Jewellery Making
- Automotive repair
- Refrigeration
Was this answer helpful?
1
0
Top Questions on Concentration of ores
- Given below are two statements:
Statement I : In froth floatation method a rotating paddle agitates the mixture to drive air out of it.
Statement II : Iron pyrites are generally avoided for extraction of iron due to environmental reasons.
In the light of the above statements, choose the correct answer from the options given below:- JEE Main - 2023
- Chemistry
- Concentration of ores
- Ferric oxide in blast furnace's upper half is mainly reduced by:
- CUET (UG) - 2023
- Chemistry
- Concentration of ores
- Extraction of which one of the following metals involves concentration of the ore by leaching?
- JEE Main - 2023
- Chemistry
- Concentration of ores
- The methods NOT involved in concentration of ore are
A Liquation
B Leaching
C Electrolysis
D Hydraulic washing
E Froth floatation
Choose the correct answer from the options given below :- JEE Main - 2023
- Chemistry
- Concentration of ores
- Match List-I with List-II.
List-I
List-II
(A) Aluminium (I) Calamine (B) Iron (II) Bauxite (C) Copper (III) Malachite (D) Zinc (IV) Siderite
Choose the correct answer from the options given below:- CUET (UG) - 2023
- Chemistry
- Concentration of ores
View More Questions
Questions Asked in JIPMER exam
- Binomial nomenclature was first introduced by
- JIPMER - 2015
- KCET - 2022
- Diversity In The Living World
- A convex lens $'A'$ of focal length $20\, cm$ and a concave lens $'B'$ of focal length $5\, cm$ are kept along the same axis with a distance $'d'$ between them. If a parallel beam of light falling on $'A'$ leaves $'B'$ as a parallel beam, then the distance $'d'$ in cm will be :
- JIPMER - 2021
- Spherical Mirrors
- A bacterial flagellum is composed of
- JIPMER - 2021
- Prokaryotic Cells
- $2,4-DNP $ test can be used to identify :
- JIPMER - 2021
- Chemical Reactions
- How many moles of acidified $K_2Cr_2O_7$ is required to liberate $6$ moles of $I_2$ from an aqueous solution of $I^-$ ?
- JIPMER - 2020
- Mole concept and Molar Masses
View More Questions
Concepts Used:
Concentration of Ore
The concentration of ore, also known as ore enrichment, is the process of removing gangue particles from ore in order to enhance the percentage of metal in the ore. The difference in physical or chemical properties of the ore and the impurities determines the procedures used to remove impurities from the ores.
Methods of Concentration of Ore:
- Hand-picking - It was the traditional system of directly concentrating ore with the hands. With the use of a hammer, the gangue or adhering solid matrix is removed from the ore in this procedure. The separation and identification of gangue are based on colour or lump form differences.
- Hydraulic Washing - On passing the ore via an upward stream of water, the lighter gangue particles are separated from the heavier metal ore. This is a gravity separation method.This process is used to enrich ores that are heavier than the gangue particles that are present in them. A stream of water is run through crushed and finely powdered ore in this procedure. Water washes away the lighter gangue particles, leaving the larger ore particles behind.
- Froth Floatation Process - The purpose of this process is to extract gangue from sulfide ores. The ore is pulverized and mixed with water to form a suspension. Collectors and Froth Stabilizers are added to this. Collectors like pine oils, fatty acids, etc. boost the metal part of the ore’s non-wettability, allowing it to form a froth.
SUBSCRIBE TO OUR NEWS LETTER
COLLEGE NOTIFICATIONSEXAM NOTIFICATIONSNEWS UPDATES
Download the Collegedunia app on 
© 2024 Collegedunia Web Pvt. Ltd. All Rights Reserved