EASY
10th CBSE
IMPORTANT
Earn 100

Name two synthetic indicators.

Important Questions on Acids, Bases and Salts

HARD
10th CBSE
IMPORTANT

Identify the compound X on the basis of the reactions given below. Also, write the name and chemical formulae of A, B and C.

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HARD
10th CBSE
IMPORTANT
A gas X reacts with lime water and forms a compound Y which is used as a bleaching agent in chemical industry. Identify X and Y. Give the chemical equation of the reaction involved.
HARD
10th CBSE
IMPORTANT
Identify the acid and base which form sodium hydrogen carbonate. Write chemical equation in support of your answer. State whether this compound is acidic, basic or neutral. Also write its pH value.
HARD
10th CBSE
IMPORTANT
State the effect of concentration of H+aq ions on the nature of the solution. Do basic solution also have H+aq ions? If yes, then why are these basic? 
EASY
10th CBSE
IMPORTANT
A white powder is added while baking cakes to make it soft and spongy. Name its main ingredients. Explain the function of each ingredient. Write the chemical reaction taking place when the powder is heated during baking.
MEDIUM
10th CBSE
IMPORTANT
A compound 'X' is bitter to taste. It is a compound of washing powder and reacts with dilute HCl to produce brisk effervescence due to a colourless and odourless gas 'Y' which turns lime water milky due to the formation of 'Z' when excess of CO2 is passed, milkiness disappears due to formation of 'P'. Identify 'X', 'Y', 'Z' and 'P'. Write the equations involved in the formation of Y, Z and P.
HARD
10th CBSE
IMPORTANT
For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake.
(a) How will it affect the taste of the cake and why?