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प्रश्न
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the nature of the gas?
(b) Write down word equations of all the reactions taking place in this process.
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उत्तर
(a) Add a few drops of water in the test tube containing gas. Now, cover the test tube and shake it well. After shaking, test the solution with blue litmus and red litmus. It will turn blue litmus red. Thus, the gas is acidic in nature.
(b) Charcoal reacts with oxygen to form carbon dioxide gas.
Carbon dioxide reacts with water to form carbonic acid, which turns blue litmus paper red.
संबंधित प्रश्न
Give the composition of an alloy called solder. State its one property and one use.
For the reduction of a metal oxide, suggest a reducing agent other than carbon.
Fill in the blank
_______ is a soft metal.
A metal which is neither ductile nor malleable is
State the position of the following in the periodic table:
Aluminium
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
Name the following:
A metal used in packaging.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
