Chapter Twelve: Chemistry in Our Lives

Chemical name of table salt is—

Chemical formula of table salt is—

In our country, table salt is mainly extracted from—

Besides $\mathrm{NaCl}$, sea water contains a small quantity of—

The method of obtaining salt from sea water by evaporation in dammed coastal land is called—

Salt collected through the harvesting process mainly contains as impurity—

After mixing harvested salt in water, the salt-water solution is separated from sand by—

After filtration, the salt is obtained again from the solution by—

Which ions are essential for smooth running of body activities?

Lack of $\mathrm{Na^+}$ in the body is filled up by taking—

$\mathrm{NaCl}$ is used in industries to prepare—

In drug industries, $\mathrm{NaCl}$ is used to manufacture—

Salt cultivators of the coastal areas trap tide water by—

After tide water enters the dammed plot, salt becomes visible due to—

Chemical name of baking soda is—

Another name of baking soda is—

Chemical formula of baking soda is—

Baking powder is produced when baking soda is mixed with—

Chemical formula of tartaric acid is—

Baking powder is mainly used in making—

The raw materials for preparing baking soda are—

In baking soda preparation, the first compound formed when $\mathrm{CO_2, NH_3, H_2O}$ react is—

Ammonium hydrogen carbonate then reacts with $\mathrm{NaCl}$ to give—

The by-product of baking soda preparation along with $\mathrm{NaHCO_3}$ is—

When cake batter is heated, baking soda reacts with tartaric acid to give—

The cake swells up because of the gas—

The reaction $\mathrm{2NaHCO_3 + C_4H_6O_6 \rightarrow C_4H_4Na_2O_6 + 2CO_2 + 2H_2O}$ takes place during—

Yeast used to inflate bread is a type of—

To activate yeast, it is first added to a solution of—

The gas produced by yeast through aerobic respiration that swells the dough is—

When bread is baked in a hot oven, the swelling stops because—

The percentage of ethanoic acid in vinegar is about—

Chemical name of vinegar is—

Formula of ethanoic acid is—

Vinegar is generally used to make—

Vinegar is prepared from ethanol by passing oxygen in presence of—

The temperature range used for vinegar preparation is—

The reaction $\mathrm{CH_3CH_2OH + O_2 \xrightarrow{acitobactor} CH_3COOH + H_2O}$ represents preparation of—

The main element of vinegar that damages bacteria in pickles is—

Pickles can be saved from bacterial attack by applying—

When vinegar acts on pickles, the protein released by ethanoic acid—

Soft drinks are prepared by dissolving in water at low temperature and high pressure—

The acid produced when $\mathrm{CO_2}$ dissolves in water in soft drinks is—

People take soft drinks for—

The claim about soft drinks aiding digestion is—

Chemical name of soda ash is—

Formula of soda ash is—

Washing soda is sodium carbonate combined with—

Chemical name of washing soda is—

Formula of washing soda is—

Sodium carbonate is produced when a large amount of $\mathrm{CO_2}$ is passed through—

Washing soda is mainly used to—

The main ingredient of toilet cleaner is—

In toilet cleaners, hydrochloric acid remains mixed with—

Formula of sodium hypochlorite is—

Toilet cleaner is used to clean—

Per the chapter, toilets become clean mainly because of the alkaline property of—

When $\mathrm{NaOCl}$ reacts with water it produces—

Hypochlorous acid breaks up to give—

Nascent oxygen refers to—

Nascent oxygen transforms colourful substances into—

Reaction of nascent oxygen with germs gives—

In the reaction $\mathrm{NaOCl + H_2O \rightarrow NaOH + HOCl}$, the alkaline product responsible for cleaning is—

Oily and protein materials in toilets are removed by reaction with—

Soap is generally the sodium or potassium salt of—

General formula of soap may be written as—

In the alkyl radical R of soap, $\mathrm{R = C_nH_{2n+1}}$, where the value of $n$ is—

Formula of sodium stearate soap is—

Formula of potassium stearate soap is—

Soap is produced when oil or fat reacts with—

The process of producing soap and glycerine from oil/fat and alkali is called—

Glycerine is separated from soap during saponification by adding—

After adding $\mathrm{NaCl}$, glycerine collects—

Soap molecules form cakes by gathering around—

Soap is mainly divided based on use into—

The soap used for cleaning skin is—

The soap used for washing clothes is—

Excessive alkali in soap is—

If excessive oil/fat remains in soap during separation, the soap will—

To avoid harmful soap, oil/fat and alkali in industries should be used—

A higher fatty acid is one in which carboxylic group is connected to—

Reaction of fatty acid with alcohol/glycerine produces—

If higher fatty acid + tri-ester of glycerine is in liquid state, it is called—

If higher fatty acid + tri-ester of glycerine is in solid state, it is called—

Stearic acid is a saturated fatty acid obtained from—

In a saturated fatty acid, between carbon atoms there is—

Olic acid is obtained from—

Olic acid is an example of—

Compared to laundry soap, the quantity of alkali in toilet soap is—

Scent or antibacterial material is generally added to—

Detergent is also a cleaning material like—

Detergent is usually available as—

Detergent preparation involves reaction of $\mathrm{H_2SO_4}$ with—

Formula of lauryl alcohol is—

Reaction of lauryl alcohol with $\mathrm{H_2SO_4}$ produces—

Formula of lauryl hydrogen sulphate is—

Sodium lauryl sulphate is produced when lauryl hydrogen sulphate reacts with—

The compound known as detergent is—

Formula of sodium lauryl sulphate is—

Sodium sulphate is added to detergent to—

Reaction $\mathrm{C_{12}H_{25}OH + H_2SO_4 \rightarrow C_{12}H_{25}SO_4 + H_2O}$ corresponds to—

According to the comparison table, detergent is the sodium salt of—

In hard or salt water, soap—

In hard or salt water, detergent—

The negatively charged end of a soap or detergent ion is attracted by—

The water-attracting end of soap/detergent is called—

The end that dissolves in oil or grease is called—

In solution, soap dissociates as—

In solution, detergent dissociates as—

The mixture of oil, soap and water formed during cleaning is called—

When more water is added to scum, oil and dust are—

When clothes are rubbed during washing, around oil/grease particles a ring is formed of—

Excessive soap on hands is harmful because of its—

Soap scum in pond/river water reacts with—

Reduction of dissolved oxygen in water leads to—

Detergent contains as a phosphate compound—

Trisodium phosphate in water acts as a—

Excessive detergent kills fish in ponds because—

The pH of normal human skin is between—

Skin's pH being acidic helps to—

If the pH of toiletries is much higher than 4.8–5.5, it—

People use toiletries (soap, cream, shampoo) for—

The hypothesis of the soap experiment includes that the produced soap will have a pH—

Materials used in the soap experiment do NOT include—

In the experiment, oil and $\mathrm{NaOH}$ solution are taken in proportion—

The mixture in the porcelain bowl is heated on a steam bath for about—

Saturated $\mathrm{NaCl}$ solution added to the cold mixture is left—

The safety reason for cautious handling in the experiment is that hot $\mathrm{NaOH}$ is—

The produced soap should NOT be used on—

To compare cleaning capacity of the produced soap, kerosene drops are added to test—

Chemical name of bleaching powder is—

Formula of bleaching powder is—

Bleaching powder is used to—

Bleaching powder is prepared by passing $\mathrm{Cl_2}$ gas through—

Reaction $\mathrm{Ca(OH)_2 + Cl_2 \rightarrow Ca(OCl)Cl + H_2O}$ represents preparation of—

Bleaching powder is called an—

When water is added to bleaching powder, it produces—

Hypochlorous acid produced in bleaching powder reaction breaks up to give—

Decolorization of clothes by bleaching powder is due to—

Reaction of nascent oxygen with germs gives—

Bleaching powder is used on house floors, commodes and basins to—

The detergent used to clean glass is called—

Glass cleaner is prepared by mixing isopropyl alcohol with—

Formula of isopropyl alcohol is—

Ammonium hydroxide is also known as—

Ammonium hydroxide is prepared by dissolving in water—

While using glass cleaner, mask is needed because—

On glass, isopropyl alcohol mainly removes—

Glass cleaner is required not to react with—

In the lab, ammonia is produced by mixing and heating $\mathrm{NH_4Cl}$ with—

Reaction $\mathrm{2NH_4Cl + CaO \rightarrow 2NH_3 + CaCl_2 + H_2O}$ is used for—

Slaked lime in the alternative lab method is—

Reaction $\mathrm{2NH_4Cl + Ca(OH)_2 \rightarrow 2NH_3 + CaCl_2 + 2H_2O}$ uses—