Question

A. Very Short Type Questions :
1. A solution reacts with crushed egg-shells to
give a gas that turns lime water milky. Thesolution contains :
(a) NaCl
(by HCe
(c) Lice
(d) KCL
2. A solution turns red litmus blue
The pH of the solution is -
(a) 1
(b) 4
(c) 5
3. Which one of the following types of
medicines is used for treating indigestion?
(a) Antibiotic (b) Analgestic
(c) Antacid (d) Antiseptic
4. How the life of the filament of an electric |
bulb is prolonged?
5. Food cans are coated with tin and not with
zinc because
(a) Zinc is costlier than tin
(b) Zinc has a higher melting point than tin
(c) Zinc is more reactive than tin
(d) Zinc is less reactive than tin.
6. Write a chemical equation to show the
reaction between Plaster of Paris and Water.
(d) zinc is less reactive than tin
7. What is the common name of the compound
CaOCI,?
PLZ HELP ME GUYZ.​

Answer 1

Answer:

hope it helps

Explanation:

1. Calcium hydroxide
2. above 7
3. Antacid
4. By filling it with inactive gases like argon and nitrogen.
5. more reactive than tin
6. CaSO4.1/2H2O + H2O ------------------> CaSO4.2H2O
7. Bleaching powder

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Answer 2

Answer:

A. Very Short Type Questions :

1. A solution reacts with crushed egg-shells to give a gas that turns lime water milky. Thesolution contains : HCL.

2. A solution turns red litmus blueThe pH of the solution is - above 7.

3. Which one of the following types ofmedicines is used for treating indigestion? Antacid.

How the life of the filament of an electric bulb is prolonged?

Answer) The filament gets so hot it literally boils off atoms and electrons. Sometimes this material collects as a dark spot at the top of the bulb. Eventually the filament deteriorates, becomes weak, and breaks, thus ending the life of the light bulb.

5. Food cans are coated with tin and not with zinc because Zinc is more reactive than tin.

6. Write a chemical equation to show thereaction between Plaster of Paris and Water.

Answer) calcium sulphate hemihydrate CaSO4.1/2H20+3/2H2O-----> CaSO4.2H2O

7. What is the common name of the compound CaOCI,?

Answer) The common name of CaOCl2 is bleching or chlorine powder.

Explanation:

HOPE IT HELP YOU ✌✌