NCERT solutions for Chemistry [English] Class 12 chapter 16 - Chemistry in Everyday Life [Latest edition]

Sleeping pills are recommended by doctors to the patients suffering from sleeplessness but it is not advisable to take its doses without consultation with the doctor, Why?

With reference to which classification has the statement, ‘ranitidine is an antacid” been given?

Why do we require artificial sweetening agents?

Write the chemical equation for preparing sodium soap from glyceryl oleate . Structural formulae of the compounds are given below.

(C₁₇H₃₂COO)₃C₃H₅ – Glyceryl oleate

Write the chemical equation for preparing sodium soap from Glyceryl palmitate . Structural formulae of the compounds are given below.

(C₁₅H₃₁COO)₃C₃H₅ – Glyceryl palmitate

Following type of nom-ionic detergents are present in liquid detergents, emulsifying agents and wetting agents. Label the hydrophilic and hydrophobic parts in the molecule. Identify the functional group (s) present in the molecule.

Why do we need to classify drugs in different ways?

Explain the term target molecules or drug targets as used in medicinal chemistry.

Name the macromolecules that are chosen as drug targets.

Why should not medicines be taken without consulting doctors?

Define the term chemotherapy.

Which forces are involved in holding the drugs to the active site of enzymes?

While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?

Low level of noradrenaline is the cause of depression. What types of drugs are needed to cure this problem? Name two drugs.

What is meant by the term ‘broad spectrum antibiotics’? Explain.

Why are cimetidine and ranitidine better antacids than sodium hydrogen carbonate or magnesium or aluminium hydroxide?

Name a substance which can be used as an antiseptic as well as disinfectant.

What are the main constituents of dettol?

What is tincture of iodine? What is its use?

What are food preservatives?

Why is use of aspartame limited to cold foods and drinks?

What are artificial sweetening agents? Give two examples.

Name a sweetening agent used in the preparation of sweets for a diabetic patient.

What problem arises in using alitame as artificial sweetener?

How are synthetic detergents better than soap?

Explain the following term with a suitable example:

Cationic detergents

Explain the following terms with suitable examples - Anionic detergents

Explain the following terms with suitable examples - Non-ionic detergents

Why do soaps not work in hard water?

Can you use soaps and synthetic detergents to check the hardness of water?

Explain the cleansing action of soaps.

If water contains dissolved calcium hydrogen carbonate, out of soaps and synthetic detergents which one will you use for cleaning clothes?

Label the hydrophilic and hydrophobic parts in the following compounds.

CH₃(CH₂)₁₀CH₂OSO₃ ^–Na⁺

Label the hydrophilic and hydrophobic parts in the following compounds.

Label the hydrophilic and hydrophobic parts in the following compounds.

`CH_3(CH_2)_16COO(CH_2CH_2O)_nCH_2CH_2OH`