Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Anusha Jain 5 years, 2 months ago
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Meghna Thapar 5 years, 1 month ago
Manganese is the mineral used to harden steel during manufacturing. It not only increases the hardening ability and the tensile strength but also decreases the critical cooling rate in the hardening process. This makes it the most efficient alloying element among all. The term hardened steel is often used for a medium or high carbon steel that has been given heat treatment and then quenching followed by tempering.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Keratin is the non metal, which is present in hair, wool and eggs
Posted by Noman Shaikh 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
Due to the eight percent of the earth's crust being aluminium, it is one of the most abundant metals on earth.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Gold, Silver and Platinum are the metals that occur in their true native form in large quantities around the world.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Diamond and Graphite has more melting and boiling points. Because they are the substances with giant covalent structures have very high melting points, because a lot of strong covalent bonds must be broken.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
According to me, quartz crystals are used in watches to keep time because these type of clocks are used as electronic occilators
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
one the tip of matchstick the chemical which is used is potassium chlorate but on striking surface we use Red Phosphorus
Posted by Noman Shaikh 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
Two major non-metals which are present in fertilisers and enhance the growth of plants are: .
(i) Nitrogen (ii) Phosphorus
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Two major non-metals which are present in fertilisers and enhance the growth of plants are: .
(i) Nitrogen (ii) Phosphorus
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
The nonmetal used to treat rubber in the process of vulcanization is sulphur. Natural rubber is soft, sticky and has less tensile strength. Vulcanization makes rubber more strong, tough and elastic. Natural rubber is mixed with 3 to 5 % sulphur and heated at 100 to 150 deg C, which results in cross linking of chains of cis-1,4-polyisoprene through disulphide (−S−S−) bonds.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
True, Steel, alloy of iron and carbon in which the carbon content ranges up to 2 percent (with a higher carbon content, the material is defined as cast iron).
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Brass is not a metal element, but it is an alloy made of copper and zinc the proportions of zinc and copper can be varied to create a range of brasses with varying properties.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Wrong, Noble gases are the least reactive of all known elements.
Posted by Noman Shaikh 5 years, 3 months ago
- 2 answers
Rhea Sharma 5 years, 2 months ago
Yogita Ingle 5 years, 3 months ago
Right,
When a metal reacts with oxygen, a metal oxide forms. The general equation for this reaction is:
metal + oxygen → metal oxide. Rust is a form of iron oxide and it forms slowly when iron is exposed to air.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Right, Galvanization is the method of coating iron with zinc to prevent rusting.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Sodium can not be stored in water because Reaction of sodium and water is highly exothermic.
Posted by Noman Shaikh 5 years, 3 months ago
- 2 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
The ability of a metal to be drawn into a wire is a measure of its ductility.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Iron combines with oxygen to produce rust, which is the compound named iron oxide.
Posted by Noman Shaikh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Non metal with lustrous property are Iodine (I), Graphite and Diamond.
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Yogita Ingle 5 years, 3 months ago
iron wire
0Thank You