Taste

Q.

Why does dry HCL gas not change the colour of the dry litmus paper?

Q.

A covalent compound which in aqueous state conducts electricity.

CCl_{​​​​4}

CS_{​​​​​2}

_NH​​​​_​3

_C2H4

Q. The taste of vinegar is

1. Sour
2. Bitter
3. Salty
4. Sweet

Q. Which of the following solution(s) can conduct electricity?

1. Water
2. NaCl solution
3. Hydrochloric acid
4. Sugar solution

Q.

how to identify a acidic oxide and a basic oxide?

Q.

While titrating dilute $\mathrm{HCl}$ solution with aqueous $\mathrm{NaOH}$, which of the following will not be required?

1. Bunsen burner and measuring cylinder

2. Burette and porcelain tile

3. Clamp and phenolphthalein

4. Pipette and distilled water

Q.

When water is added to calcium oxide, we get calcium hydroxide which turns pink on addition of phenolphthalein. Predict the nature of calcium oxide.

1. Basic

2. Acidic

3. Amphoteric

4. Neutral

Q.

Acids are sour in taste.are sour substances acidic?

Q.

Why does an aqueous solution of an acid conducts electricity?

Q.

What makes vitamin C tastes sour?

1. Its acidic property

2. Its basic property

3. Its tendency to form salts

4. None of these

Q.

The property which is common between vinegar and curd is that they:

1. Have sour taste

2. Have bitter taste

3. Have sweet taste

4. Are tasteless

Q.

Why are bases slippery and taste bitter where as acids are not slippery and taste sour?

Q.

_________ present in the lemon juice act as electrolyte.

1. Sulphuric acid

2. Nitric acid

3. Hydrochloric acid

4. Citric acid

Q. what would happen if moist blue litmus paper and moist red litmus paper are introduced in the jar of hydrogen

Q. If tartaric acid is not added to baking powder, the cake will taste bitter due to the presence of ______.

1. sodium hydrogen carbonate
2. sodium carbonate
3. carbon dioxide
4. some unreacted tartaric acid

Q.

What is the role of toothpaste in preventing cavities?

Q.

Does basic solution conduct electricity

Q.

When drops of blue litmus solutions are added to dil. HCl and aqueous NaOH taken in two different test tubes A and B respectively, what will be the colour changes occurring?

1. Blue to red in A and no change in B

2. Blue to red in both A and B

3. Blue to red in B and no change in A

4. No change in both A and B

Q.

Which of the following is a base?

1. Metal oxide

2. Metal hydroxide

3. Metal carbonates

4. All of the above

Q.

Which of the following do not contain acids?

1. Colourless aerated drink

2. Lemon juice

3. Antacid

4. Tomato juice

Q. The following questions pertain to the laboratory preparation of hydrogen chloride gas.
(iii) State a safety precaution taken during the preparation of hydrochloric acid

Q. Name an acid used:
(b) in a drink

Q. Do bases conduct electricity

Q.

What are olfactory indicators. dry HCL gas does not change the colour of dry Litmus give reasons.

Q. How would you represent hydrogen chloride and hydrochloric acid by chemical formula? Why do they differ? [2 MARKS]

Q. What would you observe when:​ (a) blue litmus is introduced into a solution of hydrogen chloride gas.​

Q. Which of the following is/are the property of washing soda?

1. It is a white powder.
2. It is odourless.
3. It is acidic in nature.
4. It is hygroscopic in nature.

Q. What makes vitamin C tastes sour?

1. Its acidic property.
2. Its basic property.
3. Its tendency to form salts.
4. None of these.

Q.

What is the name of the gas which is neutral towards Litmus?

Q. The taste of vinegar and soap respectively are:

1. salty and bitter
2. sour and bitter
3. sour and sweet
4. bitter and sour