Page 221 - ICSE Chemistry 8

D. Complete and balance the following equa ons.
1. ZnO + C __________ + CO
2. C + ___________ _______ + SO + H O
2
2
3. __________ + HNO _______ + __________ + H O
2
3
4. 3C + SiO __________ + 2CO
2
5. HCl + CaCO __________ + ___________ + CO 2
2
heat
6. NaHCO ____________ + H O + CO 2
2
2
7. KOH + CO _____________ + ____________
2
8. CaCO + H O + _________ ___________
2
3
9. MgO + CO ____________
2
10. Fe O + CO __________ + ___________
3
2
E. Choose the correct op on.
1. Which of the following is mostly used to make carry bags, pipes and household ar cles?
(a) Polyvinyl chloride (b) Polythene (c) Bakelite (d) Hydrocarbon
2. Which of the following is an amorphous form of carbon?
(a) Gas carbon (b) Diamond (c) Graphite (d) Fullerene

3. Which of the following types of coal contains 50–60% coal?
(a) Lignite (b) Peat (c) Bituminous (d) Anthracite
4. Which of the following is a foul-smelling, thick black liquid used for making dyes, drugs and explosives?
(a) Coke (b) Coal gas (c) Coal tar (d) Ammonia solu on
5. Which of the following is a mixture of 5% carbon and 95% oxygen?
(a) Dry ice (b) Urea (c) Washing soda (d) Carbogen

6. Which of the following is/are prepared using carbon dioxide?
(a) Washing soda (b) Baking soda (c) Both (a) and (b) (d) None of these

F. Write the answer as instructed.
1. Name any two carbonates that contain carbon.
2. Name any two fossil fuels that contain carbon.
3. Name the allotropic forms of carbon.
4. Name the amorphous forms of carbon.
5. Write the names of the places where graphite is found.
6. Name the types of charcoals.
7. Name the types of coke.

8. Name the types of coal.

SHORT AND PRECISE

A. Show the given text in the form of fl owcharts.
1. Some useful carbon products 2. Allotropes of carbon
3. Crystalline forms of carbon 4. Amorphous forms of carbon

207