Class-10th, Science...
Answers
Q1. Why Carbon shows versatile nature ?
➜ Carbon is versatile because it can form single, double, and triple bonds.
Q2. Why do Carbon atoms forms a large number of compounds ?
➜ Carbon forms a large number of compounds because of the following reasons:
(a) Catenation: Two carbon atoms readily form covalent bonds and this bond is more stable than the bonds formed by the other elements. (b) Carbon atoms have varying bond order and hybridisation that is it can form double or triple bonds.
Q3. What is the minimum number of carbon atoms in fullerenes and what is its shape ?
➜ A polyhedral CARBON structure composed of around 60-80 carbon atoms in pentagon and hexagon configuration. The molecule may be a hollow sphere, ellipsoid, tube, or many other shapes and sizes.
Q4. A boy Sharpens a pencil at both the ends and connect flow through the circuit ? Give reason.
➜ Current will flow because graphite is good conductor of electricity.Pencil contains graphite. Hence, the current will flow.
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for what value of k:4X + 6y =11 and 2X+KY =7 are inconsistent