Uses of Acids, Bases and Salts

Q. The salt that is used for making detergents is ________.

1. common salt
2. washing soda
3. bleaching powder
4. baking soda

Q. The tastes of vinegar and soap respectively are:

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

Q. acid present in our stomach helps us to digest food.

1. Tartaric
2. Sulphuric
3. Hydrochloric
4. Formic

Q.

Antacids are neutralising agents for the stomach as it contains a/an ______.

1. acid

2. base

3. salt

4. carbonic acid

Q. Some acids are dangerous and some are not? Why?

Q. Which of the following acid is used for the manufacture of explosives?

1. Nitric acid
2. Sulphuric acid
3. Phosphoric acid
4. Hydrochloric acid

Q.

Are the acids or base are used for explosives ??

Q.

Hydrofluoric acid has the chemical formula HF. Unlike $\mathrm{HCl}$ you will find not find this acid in your school lab because it is a deadly chemical. It can eat through glass, ceramic, and metals and hence stored in plastic bottles. It is a contact poison and causes painless burns leading to permanent tissue death.

1. Is $\mathrm{HF}$ a weak acid or a strong acid?
2. Write the balanced reaction of $\mathrm{HF}$ with glass $\left({\mathrm{SiO}}_2\right).$
3. The discovery of $\mathrm{HF}$, Carl Wilhelm Scheele, had a nasty habit of sniffing and tasting the substance he made. As a result, he died at the young age of 43. What lesson should one learn from this regarding conduct in the lab?

Q. ___ is a gas which extinguishes fire .

1. Oxygen
2. Chlorine
3. Carbon dioxide
4. Hydrogen

Q. Among the given substances, identify the one which is acidic in nature.

1. Shampoo
2. Soap
3. Vinegar
4. Fire extinguisher

Q. acid is one of the major constituent of gastric juices.

1. Formic
2. Hydrochloric
3. Tartaric
4. Sulphuric

Q.

Ram is suffering from peptic ulcer after eating too many green chillies. He visited the doctor. The doctor would advise him to eat which among the following food options?

1. Oranges

2. Lemons

3. Grapes

4. Bananas

Q.

Which chemical is found in cosmetics?

1. PET (Polyethylene terephthalate)

2. Sorbic acid

3. Paracetamol

4. Talc

Q. Why we have to make aqua regia only using chemicals like HCl and Nitric acid. Why can't we make from lemon or citric foods.

Q.

What precautions should be taken while handling laboratory chemicals?

Q.

If there is more acid in our body we take a base.But what should we do if there is more base in our body?

Q. What does a soda-acid type fire extinguisher contain? How does it work? Explain the working of a soda-acid fire extinguisher with the help of a labelled diagram.

Q. 1.Which color does phenolphthalein changes when reacted with acid and base
2. Why do fire brigade men often use shiny brass caps ( sir / Ma'am, for this question plz give definition which i ican write in exam. Because tomorrow is my exam.

Q.

Which acid is used in flavoured drinks?

1. Boric acid

2. Sulphuric acid

3. Oxalic acid

4. Carbonic acid

Q. Aqua regia can dissolve gold.

1. False
2. True

Q. rain harms aquatic life.

1. Acid
2. Basic
3. Heavy

Q.

The pH of gastric juices released during digestion is:

1. Less than 7

2. More than 7

3. Equal to 7

4. Equal to 0

Q. Acids can be used in the _______.

1. food preservation
2. automobile battery
3. production of ink
4. soap manufacture

Q.

The acid which is present in our body is ________.

1. Sulfuric acid

2. Tartaric acid

3. Formic acid

4. Hydrochloric acid

Q. Identify X in the following reaction:
$HCl$ + X $\to$ $NaCl$ + $H_{2}C{O}_3$
$H_{2}C{O}_3$ $\to$ $H_{2}O$ + $C{O}_2$

1. $NaHC{O}_3$
2. $NaOH$
3. $N{a}_{2}C{O}_3$
4. None of these

Q.

Which of the following types of medicine is used for the treatment of indigestion?

1. Antibiotic

2. Analgesic

3. Antacid

4. Antiseptic

Q.

204(a) Give the uses of three different acids.