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प्रश्न
Give a chemical test to distinguish between the following gases.
NH3 and SO2
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उत्तर
| Ammonia (NH3) | Sulphur dioxide (SO2) | |
| Litmus test | Moist red litmus blue. | Moist blue litmus red. |
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संबंधित प्रश्न
Fill in the blank.
Melting of ice is a _______ change.
Name the type of chemical reaction shown by the following equation:
NaOH + HCl → NaCl + H2O
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
Electron ______ is complete in each hydrogen in a hydrogen molecule.
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
Give examples of exothermic reactions i.e. heat evolved in each of the following:
(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white solid which evolves two colourless gases which on cooling combine and condense on the cooler parts of the test tube.
State the following reaction represent oxidation or reduction.
\[\ce{Al->Al+++}\]
Circle the odd one out. Give reason for your choice
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
Write a note on the following:
Curdling of milk
