Advertisements
Advertisements
प्रश्न
Zn + 2 HCl → ZnCl2 +_____↑
विकल्प
H2
O2
CO2
Advertisements
उत्तर
Zn + 2 HCl → ZnCl2 +H2↑
APPEARS IN
संबंधित प्रश्न
Name the gas evolved when dilute HCl reacts with sodium hydrogencarbonate. How is it recognised?
Bee sting contains ______.
Name an acid used as an eyewash.
The label on the bottle of chemical is spoiled. How will you find whether the chemical is acidic or not?
Main constituent of acid is ______.
Heshna and Keerthi are friends. Keerthi’s teeth are white without caries, but Heshna has teeth with caries. Why? How is it formed?
Fill in the cross word given in figure with the help of the clues provided.

Across
(2) The solution which does not change the colour of either red or blue litmus.
(4) Phenolphthalein gives pink colour in this type of solution.
(7) Colour of blue litmus in lemon juice.
Down
(1) It is used to test whether a substance is acidic or basic.
(3) It is a natural indicator and gives pink colour in basic solution.
(5) Nature of ant’s sting.
(6) It is responsible for the increase in temperature during a neutralisation reaction.
To Interpret:
CH4 and NH3, are not acids.
Which one of the following will not produce an acid when made to react with water.
Consider the acidity of the carboxylic acids:
(1) PhCOOH
(2) o-NO2C6H4COOH
(3) p-NO2C6H4COOH
(4) m-NO2C6H4COOH
