Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 1

HARD

10th Manipur Board

IMPORTANT

Earn 100

Dissolve a small amount of ${NaHCO}_{3}$ in the water. Add 1 drop of methyl orange into it. What is the colour of the mixture?
Add lime water in the above solution till the evolution of the gas stops. What is the colour of the mixture now?

Important Questions on Acids, Bases and Salt

HARD

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 2

How many grams of sulphuric acid

(H_{2} {SO}_{4})

will be needed to react completely with a solution containing

10.6 g

of sodium carbonate

{Na}_{2} {CO}_{3}

?

EASY

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 1

What is the nature of metal oxides-acidic or basic?

MEDIUM

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 2

Two metallic compounds A and B react separately with acid to form salt and water. Compound A also produces an effervescence. What could be A and B?

MEDIUM

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 3

When milk becomes curd lactic acid is produced as one of the products. Give reason why it is not advisable to keep curd in copper and brass vessels?

MEDIUM

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 4

Carbon dioxide reacts with lime water

Ca {(OH)}_{2}

to form salt

{CaCO}_{3}

and water as-

\underset{base}{Ca {(OH)}_{2}} + {CO}_{2} \to \underset{salt}{{CaCO}_{3}} + \underset{water}{H_{2} O}

Indicate the nature of

{CO}_{2}

. What will be the general nature of non-metallic oxides?

MEDIUM

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 5

Write the reaction between sodium hydroxide and sulphur dioxide

({SO}_{2})

.

EASY

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 6

What will happen when

{CO}_{2}

is passed into water. Write the chemical equation.

EASY

10th Manipur Board

IMPORTANT

Science for Class 10>Chapter 3 - Acids, Bases and Salt>Let us answer these>Q 7

Write the reaction between water and sulphur dioxide.