Biography and much more from answers compounds

These AP 10th Class Physics Important Questions 4th Lesson Carbon and Its Compounds will help students prepare well for the exams.

AP 10th Class Physical Science 4th Lesson Carbon and Its Compounds Important Questions

Class 10 Physical Science Chapter 4 Important Questions – 1 Mark

Question 1.
How much carbon is present on earth and CO₂ in atmosphere ?
Answer:
Carbon – 0.02%, CO₂ – 0.03%.

Question 2.
What will be the product formed where carbon is burnt in presence of air ?
Answer:
Carbon dioxide.

Question 3.
Name three allotropes of carbon.
Answer:
Diamond, graphite and buckminster fullerenes.

Question 4.
Which is purest allotrope of carbon ?
Answer:
Buckminster fullerenes.

Question 5.
What is graphite soft and slippery ?
Answer:
Due to weak vander waal’s forces of attraction between hexagonal layers.

Question 6.
Carbon has four electrons in its valence shell.

How d oes carbon attain stable electric configuration?
Answer:
By sharing f