SEBA Class 10 Science Important Chapter 3 Metals and Non-metals Solutions English Medium As Per SEBA New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 10 Science Additional Solutions in English and select need one. SEBA Class 10 General Science Additional Notes English Medium Download PDF. SEBA Important Solutions for Class 10 Science.
SEBA Class 10 Science Important Chapter 3 Metals and Non-metals
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. Assam SEBA Board Class 10 General Science Additional Question Answer are part of All Subject Solutions. Here we have given SEBA Class 10 Science Important Question Answer English Medium for All Chapters, You can practice these here.
Metals and Non-metals
Chapter: 3
| IMPORTANT QUESTION ANSWER |
Q.1. What are metals?
Ans: Metals are materials that are hard, lustrous, malleable, ductile, sonorous and good conductors of heat and electricity.
Examples: of metals are iron, copper, aluminium, calcium, magnesium, etc.
Q.2. What are non-metals?
Ans: Non-metals are elements that accept or gain electrons to generate negative ions. They often have 4, 5, 6, or 7 electrons in their outermost shell. Non-metals are materials that lack all of the characteristics of metals. They are excellent heat and electricity insulators. They are usually gasses, although they can also be liquids. Carbon, sulphur, and phosphorus, for example, are solid at normal temperatures.
Q.3. Write two soft metals.
Ans: 1. Sodium. and
2. Potassium.
Q.4. Write the name of liquid metal.
Ans: Mercury.
Q.5. What is metallic lustre?
Ans: Metallic luster is a property of a metal that describes the amount of light that reflects off the metal.
Metals, in their pure state, have a shining surface.
Q.6. What is malleability? Give two names of malleable metals?
Ans: Malleability is the quality of something that can be shaped into something else without breaking, like the malleability of clay. Gold and silver are two malleable metals.
Q.7. What is ductility? Give example.
Ans: Ductility is a mechanical property that describes how readily a material can be drawn into a wire and sustain plastic deformation without failure. Gold is the most ductile metal.
Q.8. Write the name of two metals which are best conductor of heat?
Ans: 1. Silver. and
2. Copper.
Q.9. What is full name of PVC?
Ans: The full form of PVC is Poly Vinyl Chloride.
Q.10. What do you mean by Sonorous?
Ans: The metals that produce a sound on striking a hard surface are said to be sonorous.
Q.11. What is the name of liquid non-metals?
Ans: Bromine is the only non-metal which is liquid at room temperature.
Q.12. Which metals have very low melting point?
Ans: Gallium and calcium.
Q.13. Which non-metal is lustrous?
Ans: Lodine and carbon are non-metals which are lustrous.
Q.14. Write the name of two allotrope of carbon:
Ans: Allotropes of Carbon includes.
(a) Diamond.
(b) Graphite.
Q.15. Write the name of three alkali metals.
Ans: The alkali metals:
1. Hydrogen (H)
2. Lithium (Li)
3. Sodium (Na)
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