Baking Soda

Q.

Complete and balance the equation

$\mathrm{NaOH}+\mathrm{HCl}\to$

Q.

Is Milk An Acid Or Base?

Q.

Describe the various applications of pH in daily life.

Q.

Complete the following reaction:

${\mathrm{Na}}_2{\mathrm{CO}}_3+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}\stackrel{}{\to }----$

Q.

What happens when chlorine is passed over slaked lime at $313\mathrm{K}$ and write chemical equation of the reaction involved and state two uses of the product obtained.

Q.

Can you please provide me with all important questions of acids, bases and salts

Q.

Question 09.
If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done ?
(a) Wash the hand with saline solution
(b) Wash the hand immediately with plenty of water and apply a paste of sodium hydrogencarbonate
(c) After washing with plenty of water apply solution of sodium hydroxide on the hand
(d) Neutralise the acid with a strong alkali

Q.

What is the color of anhydrous copper sulfate?

Q. Salt A, commonly used in bakery products, on heating, gets converted into another salt B. B is used for the removal of hardness of water and a gas C is evolved. The gas C when passed through lime water, turns it milky. Identify A, B, and C.

Q.

What do you observe when blue vitriol is heated?

Q.

Which of the following substances is green in colour?

1. $({\mathrm{FeSO}}_4.7{\mathrm{H}}_2\mathrm{O})$

2. $({\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O})$

3. $({\mathrm{ZnSO}}_4.7{\mathrm{H}}_2\mathrm{O})$

4. $({\mathrm{Na}}_2{\mathrm{CO}}_3.10{\mathrm{H}}_2\mathrm{O})$

Q.

If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?

1. Wash the hand with saline solution

2. Wash the hand immediately with plenty of water and apply a paste of sodium hydrogen carbonate

3. After washing with plenty of water apply a solution of Sodium hydroxide on the hand

4. Neutralise the acid with a strong alkali

Q.

Which gas causes the bread or cake to rise making them soft and spongy?

1. CO

2. HCl

3. CO₂

4. O₂

Q.

A chemical compound $\mathrm{X}$ is used in the soap and glass industry. It is prepared from brine.

(a) Write the chemical name, common name and chemical formula of $\mathrm{X}$.

(b) Write the equation involved in its preparation.

(c) What happens when it is treated with water-containing $\mathrm{Ca}$ or $\mathrm{Mg}$ salts?

Q.

Which compound is used as an antacid in medicine :

$NaHC{O}_{3}orN{a}_{2}C{O}_3$ ?

Q.

Is lemon water alkaline?

Q.

Give reasons for the following:

Sodium hydrogen carbonate is used as an antacid.

Q.

If a small amount of baking soda is added to water. Then water becomes:

1. Acidic

2. Basic

3. Remains neutral

4. None of the given options is correct

Q.

What is the chemical formula of (a) baking soda, and (b) washing soda ?

Q.

Question 12.
One of the constituents of baking powder is sodium hydrogen carbonate, the other constituent is
(a) hydrochloric acid
(b) tartaric acid
(c) acetic acid
(d) sulphuric acid

Q. Assertion (A): Baking soda reacts with red litmus paper and turns it blue.
Reason (R): Baking soda is acidic in nature.

1. (A) and (R) both are correct and (R) is correct explanation of (A) .
2. (A) and (R) both are correct but (R) is not the correct explanation of (A).
3. (A) is correct but (R) is not correct.
4. (A) is not correct but (R) is correct.

Q.

Assertion: Quick lime reacts with water to form slaked lime.

Reason: It is a slow chemical reaction.

1. If both assertion and reason are true and the reason is the correct explanation of assertion.

2. If both assertion and reason are true but the reason is not the correct explanation of assertion.

3. If the assertion is true but the reason is incorrect.

4. If the assertion is incorrect but the reason is correct.

Q.

Name an acid which is present in baking powder.

Q.

(a) What is "baking powder"? How does it make the cake soft and spongy?

(b) In addition to sodium hydrogen carbonate, baking powders contain a substance X. Name the substance X. What is the role of substance X in the baking powder?

Q. Question 12(a)
A milkman adds a very small amount of baking soda to fresh milk.
(a) Why does he shift the pH of the fresh milk from 6 to slightly alkaline?

Q.

A housewife found that the cake prepared by her is hard and small in size. Which ingredient has she forgotten to add that would have made the cake fluffy?

Q. The colour of sodium bicarbonate is _______.

1. white
2. yellow
3. pale green
4. pale pink

Q.

The discomfort caused by indigestion due to overeating can be cured by taking :

(a) vinegar

(b) lemon juice

(c) baking soda

(d) caustic soda

Q. A strong acid in solution contains:

1. both molecules and ions
2. mostly molecules
3. mostly ions
4. mostly water

Q.

A person found that the cake prepared by him is hard and small in size. Which ingredient has he forgotten to add that would have caused the cake to rise and become light? Explain your answer.