State reasons for the following:(i) Electric wires are covered with ru

1.	State reasons for the following:(i) Electric wires are covered with rubber like material.(ii)From dilute hydrochloric acid, zinc can liberate hydrogen gas but copper cannot.(iii) Sulphide ore of a metal is first converted to its oxide to extract the metal from it.
Answer» ANSWER : ▶️(i) It is because rubber is an insulator and does not ALLOW current to flow through it. ▶️(II) Zinc is more reactive than hydrogen. Therefore, it can displace hydrogen from dilute HCL whereas COPPER cannot, because it is less reactive than hydrogen. ▶️(iii) It is because it is EASIER to reduce oxide ore as compared to sulphide ore.

State reasons for the following:(i) Electric wires are covered with rubber like material.(ii)From dilute hydrochloric acid, zinc can liberate hydrogen gas but copper cannot.(iii) Sulphide ore of a metal is first converted to its oxide to extract the metal from it.

Answer»

ANSWER :

▶️(i) It is because rubber is an insulator and does not ALLOW current to flow through it.

▶️(II) Zinc is more reactive than hydrogen. Therefore, it can displace hydrogen from dilute HCL whereas COPPER cannot, because it is less reactive than hydrogen.

▶️(iii) It is because it is EASIER to reduce oxide ore as compared to sulphide ore.

Discussion

No Comment Found

Related InterviewSolutions

6. Who first identified cells and when?
What is hyaline cartilage??
Melting happens when solid material change into the liquid form
16. It is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance.17. It occurs when you use or lose more fluid than you take in, and your body does not have enough water andout its normal functions.18 It occurs when people push themselves too hard during physical activities like Dancing causes injury whenand his or her physical capacity and tolerances of his or her body's soft touc.19. Stretching or tearing of ligaments,20. Stretching or tearing tendons or muscles.21. Refers to a group of heat-related conditions characterized by an abnormally high body temperature in otherof hypothermia22.Occurs when the body's heat-regulation system becomes overwhelmed by outside factors, causing amperature to rise23. It is a medical emergency that occurs when your body loses heat faster than it can produce heat, causingody temperature24. Occurs as your body temperature falls below 95 F (35 C).25. It is used by our body cells, organs, and tissues to help regulate its temperature and maintain other bodilyration.
Why does sun appear blue in colour
It refers to the size or strenght of the force?A.friction B.direction C.magnitude D.gravitation
What is work and state it's SI unit.
Co2+CaCo3+H2o→ Answers this question
What is motion how motion is measured in different terms
What do u understand of Einstein's nature from his conversations with his history teacher, his Mathematics teacher and the head teacher.Don't spam

State reasons for the following:(i) Electric wires are covered with rubber like material.(ii)From dilute hydrochloric acid, zinc can liberate hydrogen gas but copper cannot.(iii) Sulphide ore of a metal is first converted to its oxide to extract the metal from it.​

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment

State reasons for the following:(i) Electric wires are covered with rubber like material.(ii)From dilute hydrochloric acid, zinc can liberate hydrogen gas but copper cannot.(iii) Sulphide ore of a metal is first converted to its oxide to extract the metal from it.